Service Manual
18 Pages
Preview
Page 1
Normothermia System
Model 875 Patient Adjustable Warming Unit
System
System
MODEL
875
Service Manual
1 English...1 2 Français ... 17 3 Deutsch ... 33
4394554 Description: 3M TM Bair Hugger™ Patient Adjustable Warming Unit Service Manual Base File Name: PA: 34871887997.indb GA: Software: InDesign CC 2014 - BOOK SGS Contact: Email: Printer: Printer Location: Supplier:
PROCESS BLACK
PMS 280
2
Item Spec#: 34-8718-8799-7 Supersedes#: Structure#: Cat/Product#:Model 875 Reference: Requester: Frank Boeshart/Debra Staack Die # / Doc. Size: 8.5" x 11"
08.03.16 New Build
kmh
08.24.16 Alts
kmh
1 Table of Contents Introduction To The 3M™ Bair Hugger™ Patient Adjustable Warming System... 3 Bair Hugger Patient Adjustable Warming Unit ... 3 Bair Hugger Warming Gowns ... 3 Indications... 3 Definition Of Symbols ... 3 Explanation Of Signal Word Consequences... 4 Contraindication:... 4 Warning: ... 4 Caution: ... 4 Notice: ... 5 Proper Use And Maintenance ... 5 Read Before Servicing Equipment ... 5 Safety Inspection ... 5 Preparing The Patient Adjustable Warming Unit For Use ... 5 Installing The Wall-Mount Bracket ... 5 Placing The Patient Adjustable Warming Unit On The Wall-Mount Bracket ... 6 Mounting The Patient Adjustable Warming Unit On An IV Pole... 6 Mounting The Patient Adjustable Warming Unit On A Bedrail ... 6 Mounting The Patient Adjustable Warming Unit With A Rail-Mount To The Wall ... 6 Mounting The Patient Adjustable Warming Unit With A Bair Hugger Suction Wall Mount Adapter ...7 Using The Handheld Temperature Controller ...7 Using The Holder For The Handheld Temperature Controller ...7 Service Procedures ...7 Calibrating The Operating Temperatures ...7 Testing The Over-Temperature (OT) Circuit ... 8 Replacing The Filter ... 9 Replacing The Handheld Controller And/Or Hose ... 9 Replacing The Fuses ...10 Replacing The Power Cord...10 General Maintenance ...11 Calibrating The Operating Temperatures ...11 Replacing The Filter ...11 Cleaning Instructions...11 Storage ...11 Technical Support And Order Placement ...11 USA...11 Outside Of The USA ...11 When You Call For Technical Support ...11 Repair And Exchange ...11 Technical Specifications ...11 Maintenance Log...15
GB / 34-8718-8799-7
1
1 3M™ Bair Hugger™ Patient Adjustable Warming Unit Model 875 Service Manual Please forward to Biomedical Engineering Department
Introduction to the 3M™ Bair Hugger™ Patient Adjustable Warming System The Bair Hugger temperature management system consists of the Model 875 patient adjustable warming unit and a single-use Bair Hugger warming gown. The Model 875 patient adjustable warming unit can provide prewarming and/or comfort warming to patients in preoperative settings. In postoperative settings the patient adjustable warming unit can provide comfort warming. This manual includes service instructions and the patient adjustable warming unit specifications for the patient adjustable warming unit. Please refer to the Instructions for Use for more information about the warming gowns.
Bair Hugger Patient Adjustable Warming Unit The Model 875 patient adjustable warming unit has the following key elements: a blower, a heating element, and a handheld temperature controller. The patient adjustable warming unit delivers warmed air through a hose that is connected to a port in a warming gown. The patient or clinician can adjust the air temperature and airflow using the handheld temperature controller.
An equipotentiality plug (grounded) conductor other than a protective earth conductor or a neutral conductor, providing a direct connection between electrical equipment and the potential equalization busbar of the electrical installation. Please consult IEC 60601-1; 2005 for requirements.
Fuse
CAUTION
Dangerous voltage
Type BF equipment (patient applied) System System
Voltage, alternating current (AC) MODEL
875
Protective earth ground
Bair Hugger Warming Gowns The single-use warming gown completely covers and surrounds the patient except for the head, hands and feet. The gown has an integral, channeled insert that delivers ambient and warm air through small perforations to warm the patient.
Ground
For additional information on Bair Hugger gowns or other accessories visit us online at bairhugger.com.
Date of manufacture
No free hosing
Manufacturer
Indications The patient adjustable warming unit is indicated for patient warming. This patient adjustable warming unit has been designed for use with the warming gowns in all preoperative and postoperative settings for pediatric and adult patients. •
The Bair Hugger patient adjustable warming system should only be used by trained medical professionals.
•
Federal law (USA) restricts this device to sale by or on the order of a licensed healthcare professional.
Definition of Symbols
This system is subject to European WEEE Directive 2002/96/EC. This product contains electrical and electronic components and must not be disposed of using standard refuse collection. Please consult local directives for disposal of electrical and electronic equipment.
Consult instructions for use
Follow instructions for use
The following symbols may appear on the product, on the exterior packaging, or in the product labeling. Power on
Recycle to avoid environmental contamination. This product contains recyclable parts. For information on recycling, please contact your nearest 3M Service Center for advice.
Increase temperature and airflow Keep dry Over-temperature Temperature limit Temperature control
GB / 34-8718-8799-7
3
Explanation of Signal Word Consequences
! WARNING: Indicates a hazardous situation which, if not avoided, could result in death or serious injury.
! CAUTION:
To reduce the risks associated with injury due to ! WARNING: interference with ventilation: •
! WARNING: To reduce the risks associated with strangulation: •
Do not leave children and other vulnerable patient populations unattended while using a Bair Hugger patient adjustable warming unit.
•
Do not allow children and other vulnerable patients to handle the handheld temperature controller without supervision to prevent controller’s electrical cord from becoming entangled around the patient.
Indicates a hazardous situation which, if not avoided, could result in minor or moderate injury. NOTICE: Indicates a situation which, if not avoided, could result in property damage only. To reduce the risks associated with ! CONTRAINDICATION: thermal energy: •
Do not apply heat to lower extremities during aortic cross-clamping. Thermal injury may occur if heat is applied to ischemic limbs.
•
Do not disassemble the patient adjustable warming unit unless you are a qualified service technician. There are electrically live parts within the patient adjustable warming unit when it is connected to a power source, even when the handheld controller is in the OFF position.
Do not treat patients with the hose alone. Always attach the hose to a Bair Hugger warming gown before providing warming therapy.
•
Keep power cord visible and accessible at all times. The plug on the power cord serves as the disconnect device.
•
Only connect to outlets marked “Hospital only,” “Hospital Grade,” or a reliable grounded outlet.
•
Do not allow the patient to lie on the hose.
•
Do not allow the patient adjustable warming unit hose to directly contact the patient’s skin during warming therapy.
•
Use only the power cord specified for this product and certified for the country of use.
•
Do not leave children and other vulnerable patient populations unattended during warming therapy.
•
Do not allow the power cord to get wet.
•
Do not leave patients with poor perfusion unmonitored during prolonged warming therapy.
•
Do not use the patient adjustable warming unit when it appears the unit, power cord or any component is damaged. Contact 3M Technical Support.
•
Do not use the Bair Hugger 800 series patient adjustable warming unit in the operating room.
•
Do not continue warming therapy if the red Over-temp indicator light illuminates and the alarm sounds. Unplug the patient adjustable warming unit and contact a qualified service technician.
•
•
Do not connect the warming gown to the patient adjustable warming unit if the fabric has been cut as air channels could be damaged. Do not place patient securement device (i.e. safety strap or tape) over the warming gown.
•
Do not tape, roll, gather, bunch, or compress the inflated air-channel insert of the gown as these actions can occlude airflow and reduce warming of the patient.
•
Do not cover gown with more than one sheet.
•
•
Ensure that the blood pressure cuff, ECG, IV or other lines or cords are not between the upper sleeve insert and the gown prior to deploying the upper sleeve warming insert(s), as this could result in tearing of the insert during deployment. (Flex gown only)
This warming gown is not sterile and is intended for single patient use ONLY. Placing a sheet be-tween the warming gown and the patient does not prevent contamination of the product.
•
Clean the patient adjustable warming unit, handheld controller, and the outside of the warming unit hose after each patient use. See “Cleaning Instructions” on page 11.
•
Do not use upper warming gown hose port if upper body extended inserts have been removed.
•
Follow applicable regulations when disposing of this warming unit or any of its electrical components.
•
Do not use this patient adjustable warming unit with any other manufacturer’s gown. Use only with a 3M Bair Hugger gown.
•
•
The handheld temperature controller must be at its maximum (warmest) setting when calibrating; otherwise, temperature settings may be inaccurate.
Do not attempt to clean the air filter as it may be contaminated from use. Discard the filter in a manner consistent with institutional protocol.
Do not calibrate the patient adjustable warming unit above 43°C.
•
Do not use forced-air warming over transdermal medication patches.
!
!
To reduce the risks associated with patient or ! CAUTION: caregiver injury:
2.
3M recommends continuously monitoring core temperature. In the absence of continuous monitoring, monitor the temperature of patients who are incapable of reacting, communicating and/or who cannot sense temperature a minimum of every 15 minutes or according to institutional protocol.
•
Monitor cutaneous responses of patients who are incapable of reacting, communicating and/or who cannot sense temperature a minimum of every 15 minutes or according to institutional protocol.
•
Adjust air temperature or discontinue warming therapy when the therapeutic goal is reached, if elevated temperatures are recorded or if there is an adverse cutaneous response in the warmed area.
•
Do not place the patient adjustable warming unit on a soft uneven surface, such as a bed, or a visibly wet surface as the air intake may become blocked and cause the patient adjustable warming unit to overheat, compromising the unit’s performance.
•
Perform all calibrations of the patient adjustable warming unit using a Model 90055 Temperature Test Kit.
•
Perform calibration testing at an ambient temperature similar to the area where the patient adjustable warming unit will be used.
•
The patient adjustable warming unit is intended for use in an ambient environment between 18 and 26°C (65 and 79°F).
CAUTION: To reduce the risk associated with electromagnetic interference (EMI) due to portable and mobile radio frequency (RF) communications equipment: •
The 3M Bair Hugger temperature management system has been tested to be resistant to both EMI and electrostatic discharge (ESD).
•
Install and put into service the 3M Bair Hugger temperature management system according to the electro-magnetic compatibility (EMC) information provided in the Guidance and Manufacturer’s Declaration.
•
Should interference occur, move away from the portable or mobile RF communications equipment.
The patient adjustable warming unit meets the international electronic interference requirements. If radio frequency interference with monitoring equipment occurs, connect the patient adjustable warming unit to a different power source.
•
Modifications or repairs are performed by unqualified personnel.
•
The patient adjustable warming unit is used in a manner other than that described in the Operator’s or Service Manuals.
•
The patient adjustable warming unit is installed in an environment that does not meet the appropriate electrical and grounding requirements.
•
The patient adjustable warming unit is not maintained in accordance with the procedures described in the Service Manual.
Read Before Servicing Equipment All repair, calibration, and servicing of the patient adjustable warming unit require the skill of a qualified, medical equipment service technician who is familiar with good practice for medical device repair. If service does not require the manufacturer’s attention, the Model 875 Service Manual provides the technical information needed to service the unit. Perform all repairs and maintenance in accordance with the instructions in the Service Manual. For additional service information, please contact 3M technical support.
Safety Inspection Perform a safety inspection after making repairs to the patient adjustable warming unit and before returning the unit to service. A safety inspection should include calibrating the operating temperature settings and testing the over-temperature detection function as described in this service manual as well as testing for leakage current and continuity check on safety ground.
Preparing the Patient Adjustable Warming Unit for Use Before using the patient adjustable warming unit, make sure that it is safely placed on a flat, hard surface such as a table, or securely mounted on a wall, IV pole, suction wall mount adapter, or bedrail. Do not place the unit on a soft uneven surface, such as a ! Caution: bed, or a visibly wet surface as the air intake may become blocked and cause the unit to overheat, compromising the unit’s performance. A wall-mount bracket is shipped with every patient adjustable warming unit; the brackets for mounting the patient adjustable warming unit to an IV pole or a bedrail are available separately. Please contact your local sales representative or contact 3M for more information about ordering mounting brackets.
INSTALLING THE WALL-MOUNT BRACKET 1.
Using the four wall-screw holes on the wall-mount bracket (see Figure 1) as a template, mark the position for the four wall anchors on the desired wall. The use of a level is recommended.
2.
Install four suitable wall anchors at the marked positions. If using the provided self-drilling wall anchors, use a Phillips screwdriver to screw the anchors into position. If installing into industrial-grade plasterboard, predrilling may be required.
3.
Hold the wall-mount bracket in position against the wall.
4.
Screw the four provided screws through the wall-mount holes and into the wall anchors.
To avoid patient adjustable warming unit damage: •
Do not immerse the patient adjustable warming unit, patient adjustable warming unit parts, or accessories in any liquid or subject them to any sterilization process.
•
Do not use the Bair Hugger pediatric warming gown unless the patient is over 102 cm (40 inches) tall.
•
•
If mounted on an IV pole, the distance from the bottom of the warming unit to the floor must be less than 44" (112 cm) and the IV pole wheelbase diameter must be at least 28" (71 cm) to prevent tipping.
Do not use cleaning solutions with greater than 80% alcohol or solvents, including acetone and thinner, to clean the unit or hose. Solvents may damage the labels and other plastic parts.
•
Do not modify this equipment without authorization from the manufacturer.
•
Over torqueing the suction wall mount adapter may cause device damage.
3M™ Bair Hugger™ Patient Adjustable Warming Unit Model 875 – Service Manual
3M assumes no responsibility for the reliability, performance, or safety of the patient adjustable warming unit if any of the following events occur:
This product is classified as Class I Normal Flammability as defined by the Consumer product Safety Com-mission’s flammable fabric regulation, 16 CFR 1610. Follow standard safety protocols when using high in-tensity heat sources.
NOTICE: 1.
Proper Use and Maintenance
CAUTION: To reduce the risks of thermal injury, hyperthermia or hypothermia: •
To reduce the risks associated with exposure ! CAUTION: to cross-contamination:
Do not place warming insert directly over a dispersive electrode pad.
•
4
Always extend the warming gown insert to its full length when connected to a warming unit.
•
To reduce the risk of patient injury or death due to ! WARNING: altered drug delivery:
•
To reduce the risks associated with hypothermia and ! CAUTION: ensure optimal heat transfer: •
When using the suction wall mount adapter, only hold the front of the adapter when increasing/decreasing the expander to prevent pinching fingers.
! CAUTION: To reduce the risk of fire:
To reduce the risks associated with hazardous voltage ! WARNING: and fire:
! WARNING: To reduce the risks of thermal injury: •
Do not allow the blanket/head drape to cover the patient’s head or airway unless the patient is mechanically ventilated.
•
GB / 34-8718-8799-7
Wall screws
Figure 1. Front view of wall-mount bracket.
5
Explanation of Signal Word Consequences
! WARNING: Indicates a hazardous situation which, if not avoided, could result in death or serious injury.
! CAUTION:
To reduce the risks associated with injury due to ! WARNING: interference with ventilation: •
! WARNING: To reduce the risks associated with strangulation: •
Do not leave children and other vulnerable patient populations unattended while using a Bair Hugger patient adjustable warming unit.
•
Do not allow children and other vulnerable patients to handle the handheld temperature controller without supervision to prevent controller’s electrical cord from becoming entangled around the patient.
Indicates a hazardous situation which, if not avoided, could result in minor or moderate injury. NOTICE: Indicates a situation which, if not avoided, could result in property damage only. To reduce the risks associated with ! CONTRAINDICATION: thermal energy: •
Do not apply heat to lower extremities during aortic cross-clamping. Thermal injury may occur if heat is applied to ischemic limbs.
•
Do not disassemble the patient adjustable warming unit unless you are a qualified service technician. There are electrically live parts within the patient adjustable warming unit when it is connected to a power source, even when the handheld controller is in the OFF position.
Do not treat patients with the hose alone. Always attach the hose to a Bair Hugger warming gown before providing warming therapy.
•
Keep power cord visible and accessible at all times. The plug on the power cord serves as the disconnect device.
•
Only connect to outlets marked “Hospital only,” “Hospital Grade,” or a reliable grounded outlet.
•
Do not allow the patient to lie on the hose.
•
Do not allow the patient adjustable warming unit hose to directly contact the patient’s skin during warming therapy.
•
Use only the power cord specified for this product and certified for the country of use.
•
Do not leave children and other vulnerable patient populations unattended during warming therapy.
•
Do not allow the power cord to get wet.
•
Do not leave patients with poor perfusion unmonitored during prolonged warming therapy.
•
Do not use the patient adjustable warming unit when it appears the unit, power cord or any component is damaged. Contact 3M Technical Support.
•
Do not use the Bair Hugger 800 series patient adjustable warming unit in the operating room.
•
Do not continue warming therapy if the red Over-temp indicator light illuminates and the alarm sounds. Unplug the patient adjustable warming unit and contact a qualified service technician.
•
•
Do not connect the warming gown to the patient adjustable warming unit if the fabric has been cut as air channels could be damaged. Do not place patient securement device (i.e. safety strap or tape) over the warming gown.
•
Do not tape, roll, gather, bunch, or compress the inflated air-channel insert of the gown as these actions can occlude airflow and reduce warming of the patient.
•
Do not cover gown with more than one sheet.
•
•
Ensure that the blood pressure cuff, ECG, IV or other lines or cords are not between the upper sleeve insert and the gown prior to deploying the upper sleeve warming insert(s), as this could result in tearing of the insert during deployment. (Flex gown only)
This warming gown is not sterile and is intended for single patient use ONLY. Placing a sheet be-tween the warming gown and the patient does not prevent contamination of the product.
•
Clean the patient adjustable warming unit, handheld controller, and the outside of the warming unit hose after each patient use. See “Cleaning Instructions” on page 11.
•
Do not use upper warming gown hose port if upper body extended inserts have been removed.
•
Follow applicable regulations when disposing of this warming unit or any of its electrical components.
•
Do not use this patient adjustable warming unit with any other manufacturer’s gown. Use only with a 3M Bair Hugger gown.
•
•
The handheld temperature controller must be at its maximum (warmest) setting when calibrating; otherwise, temperature settings may be inaccurate.
Do not attempt to clean the air filter as it may be contaminated from use. Discard the filter in a manner consistent with institutional protocol.
Do not calibrate the patient adjustable warming unit above 43°C.
•
Do not use forced-air warming over transdermal medication patches.
!
!
To reduce the risks associated with patient or ! CAUTION: caregiver injury:
2.
3M recommends continuously monitoring core temperature. In the absence of continuous monitoring, monitor the temperature of patients who are incapable of reacting, communicating and/or who cannot sense temperature a minimum of every 15 minutes or according to institutional protocol.
•
Monitor cutaneous responses of patients who are incapable of reacting, communicating and/or who cannot sense temperature a minimum of every 15 minutes or according to institutional protocol.
•
Adjust air temperature or discontinue warming therapy when the therapeutic goal is reached, if elevated temperatures are recorded or if there is an adverse cutaneous response in the warmed area.
•
Do not place the patient adjustable warming unit on a soft uneven surface, such as a bed, or a visibly wet surface as the air intake may become blocked and cause the patient adjustable warming unit to overheat, compromising the unit’s performance.
•
Perform all calibrations of the patient adjustable warming unit using a Model 90055 Temperature Test Kit.
•
Perform calibration testing at an ambient temperature similar to the area where the patient adjustable warming unit will be used.
•
The patient adjustable warming unit is intended for use in an ambient environment between 18 and 26°C (65 and 79°F).
CAUTION: To reduce the risk associated with electromagnetic interference (EMI) due to portable and mobile radio frequency (RF) communications equipment: •
The 3M Bair Hugger temperature management system has been tested to be resistant to both EMI and electrostatic discharge (ESD).
•
Install and put into service the 3M Bair Hugger temperature management system according to the electro-magnetic compatibility (EMC) information provided in the Guidance and Manufacturer’s Declaration.
•
Should interference occur, move away from the portable or mobile RF communications equipment.
The patient adjustable warming unit meets the international electronic interference requirements. If radio frequency interference with monitoring equipment occurs, connect the patient adjustable warming unit to a different power source.
•
Modifications or repairs are performed by unqualified personnel.
•
The patient adjustable warming unit is used in a manner other than that described in the Operator’s or Service Manuals.
•
The patient adjustable warming unit is installed in an environment that does not meet the appropriate electrical and grounding requirements.
•
The patient adjustable warming unit is not maintained in accordance with the procedures described in the Service Manual.
Read Before Servicing Equipment All repair, calibration, and servicing of the patient adjustable warming unit require the skill of a qualified, medical equipment service technician who is familiar with good practice for medical device repair. If service does not require the manufacturer’s attention, the Model 875 Service Manual provides the technical information needed to service the unit. Perform all repairs and maintenance in accordance with the instructions in the Service Manual. For additional service information, please contact 3M technical support.
Safety Inspection Perform a safety inspection after making repairs to the patient adjustable warming unit and before returning the unit to service. A safety inspection should include calibrating the operating temperature settings and testing the over-temperature detection function as described in this service manual as well as testing for leakage current and continuity check on safety ground.
Preparing the Patient Adjustable Warming Unit for Use Before using the patient adjustable warming unit, make sure that it is safely placed on a flat, hard surface such as a table, or securely mounted on a wall, IV pole, suction wall mount adapter, or bedrail. Do not place the unit on a soft uneven surface, such as a ! Caution: bed, or a visibly wet surface as the air intake may become blocked and cause the unit to overheat, compromising the unit’s performance. A wall-mount bracket is shipped with every patient adjustable warming unit; the brackets for mounting the patient adjustable warming unit to an IV pole or a bedrail are available separately. Please contact your local sales representative or contact 3M for more information about ordering mounting brackets.
INSTALLING THE WALL-MOUNT BRACKET 1.
Using the four wall-screw holes on the wall-mount bracket (see Figure 1) as a template, mark the position for the four wall anchors on the desired wall. The use of a level is recommended.
2.
Install four suitable wall anchors at the marked positions. If using the provided self-drilling wall anchors, use a Phillips screwdriver to screw the anchors into position. If installing into industrial-grade plasterboard, predrilling may be required.
3.
Hold the wall-mount bracket in position against the wall.
4.
Screw the four provided screws through the wall-mount holes and into the wall anchors.
To avoid patient adjustable warming unit damage: •
Do not immerse the patient adjustable warming unit, patient adjustable warming unit parts, or accessories in any liquid or subject them to any sterilization process.
•
Do not use the Bair Hugger pediatric warming gown unless the patient is over 102 cm (40 inches) tall.
•
•
If mounted on an IV pole, the distance from the bottom of the warming unit to the floor must be less than 44" (112 cm) and the IV pole wheelbase diameter must be at least 28" (71 cm) to prevent tipping.
Do not use cleaning solutions with greater than 80% alcohol or solvents, including acetone and thinner, to clean the unit or hose. Solvents may damage the labels and other plastic parts.
•
Do not modify this equipment without authorization from the manufacturer.
•
Over torqueing the suction wall mount adapter may cause device damage.
3M™ Bair Hugger™ Patient Adjustable Warming Unit Model 875 – Service Manual
3M assumes no responsibility for the reliability, performance, or safety of the patient adjustable warming unit if any of the following events occur:
This product is classified as Class I Normal Flammability as defined by the Consumer product Safety Com-mission’s flammable fabric regulation, 16 CFR 1610. Follow standard safety protocols when using high in-tensity heat sources.
NOTICE: 1.
Proper Use and Maintenance
CAUTION: To reduce the risks of thermal injury, hyperthermia or hypothermia: •
To reduce the risks associated with exposure ! CAUTION: to cross-contamination:
Do not place warming insert directly over a dispersive electrode pad.
•
4
Always extend the warming gown insert to its full length when connected to a warming unit.
•
To reduce the risk of patient injury or death due to ! WARNING: altered drug delivery:
•
To reduce the risks associated with hypothermia and ! CAUTION: ensure optimal heat transfer: •
When using the suction wall mount adapter, only hold the front of the adapter when increasing/decreasing the expander to prevent pinching fingers.
! CAUTION: To reduce the risk of fire:
To reduce the risks associated with hazardous voltage ! WARNING: and fire:
! WARNING: To reduce the risks of thermal injury: •
Do not allow the blanket/head drape to cover the patient’s head or airway unless the patient is mechanically ventilated.
•
GB / 34-8718-8799-7
Wall screws
Figure 1. Front view of wall-mount bracket.
5
Placing the Patient Adjustable Warming Unit on the Wall-mount Bracket 1.
2.
3.
Snap the patient adjustable warming unit into position by sliding the clip on the back of the patient adjustable warming unit into the groove of the wall-mount bracket. The assembly will click when the clip is fully seated in the wall-mount bracket.
Wrap the safety strap around the bedrail and connect the end to the fastener on the strap. The safety strap will prevent the patient adjustable warming unit from falling if the unit is accidentally dislodged from the bedrail. Bedrail
Rail-mount
•
Mounting the Patient Adjustable Warming Unit with a Bair Hugger Suction Wall Mount Adapter Notice: When using the suction wall mount adapter, only hold the front of the adapter when increasing/decreasing the expander. Over torquing the suction wall mount adapter may cause device damage.
At position C, the patient adjustable warming unit is on HIGH HEAT and HIGH AIRFLOW. The air temperature will stabilize at 43±3°C (109±5.4°F).
Lift the patient adjustable warming unit straight up to remove it from the wall-mount bracket. Safety strap
NOTE: It may be necessary to gently strike the case bottom in an upward fashion with the palm of your hand to release the clip from the wall-mount bracket.
System
System
System
System System
MODEL
875
1.
Slide the Bair Hugger suction wall mount adapter into the suction wall bracket. If the adapter is too large to fit, remove the expand spacer.
2.
Increase the expander on the suction wall mount adapter by gently turning the screw counter clockwise until the adapter is securely fastened (torque < 10 in-lbs). The adapter should not be able to move in any direction within the suction wall bracket once fastened.
System System
Wall-mount bracket MODEL
Figure 4. Mounting the patient adjustable warming unit on a bedrail using the rail-mount.
875
Case bottom
Mounting the Patient Adjustable Warming Unit with a Rail-mount to the Wall
Figure 2. Inserting the patient adjustable warming unit into the groove of the wall-mount bracket.
NOTE: A minimum of two wall anchors must be used to secure the rail-to-wall bracket to the wall. Additional wall anchors (up to a total of four) can be used for extra support.
Mounting the Patient Adjustable Warming Unit on an IV Pole
If mounted on an IV pole, the distance from the bottom of ! Caution: the unit to the floor must be less than 44" (112 cm) and the IV pole
1.
Using the wall-screw holes on the rail-to-wall bracket (see Figure 5) as a template, mark the position for the two wall anchors on the desired wall. The use of a level is recommended.
wheelbase diameter must be at least 28" (71 cm) to prevent tipping.
2.
Install two suitable wall anchors at the marked position. If using the provided self-drilling wall anchors, use a Phillips* screwdriver to screw the anchors into position. If installing into industrial-grade plasterboard, predrilling may be required.
1.
To prevent tipping, clamp the Model 875 patient adjustable warming unit to an IV pole at a height that provides stability. Clamping the warming unit no higher than 44" (112 cm) from the floor on an IV pole with a minimum 28" (71 cm) diameter wheelbase.
3.
Hold the rail-to-wall bracket in position against the wall.
2.
Turn the clamp knob on the IV pole-mount clockwise to tighten the clamp to the pole (Figure 3).
4.
Screw the two provided screws through the bracket holes and into the wall anchors.
3.
Snap the patient adjustable warming unit into position by sliding the clip on the back of the patient adjustable warming unit into the groove of the IV pole-mount. The assembly will click when the clip is fully seated in the IV pole-mount.
5.
If the patient adjustable warming unit is not already connected to the rail-mount, slide the clip on the back of the patient adjustable warming unit into the groove of the rail-mount. The assembly will click when the clip is fully seated in the rail-mount.
Clip
6.
Hook the patient adjustable warming unit with the attached rail-mount to the rail-to-wall bracket as depicted in Figure 5.
7.
Lift the patient adjustable warming unit straight up to remove it from the rail-to-wall bracket.
When using the suction wall mount adapter, only hold the ! Caution: front of the adapter when increasing/decreasing the expander to prevent pinching fingers. Notice: Over torquing may cause device damage
Figure 7. Handheld temperature controller
Using the Holder for the Handheld Temperature Controller Store the handheld temperature controller in the controller holder to help prevent cord clutter around the patient and accidental damage to the patient adjustable warming unit. 1.
Press the holder onto the patient adjustable warming unit hose so it is within the patient’s reach.
2.
Slide the handheld temperature controller into the holder. It should fit securely with the dial facing the patient.
Warming unit hose
3.
Handheld temperature controller holder
Slide the patient adjustable warming unit into the suction wall mount adapter.
System
Handheld temperature controller
System System
Figure 8. Using the holder for the handheld Temperature controller
Service Procedures
MODEL
875
Calibrating the Operating Temperatures
The handheld temperature controller must be at its ! Warning: maximum (warmest) setting when calibrating; otherwise, temperature
System System
settings may be inaccurate.
Rail-to-wall bracket Figure 6. Mounting the patient adjustable warming unit with a suction wall mount adapter. MODEL
875
Using the Handheld Temperature Controller
Clamp knob
IV polemount
System System
Rail-mount IV pole
After the hose has been connected to the warming gown, the patient can adjust the air temperature and airflow by turning the knob on the handheld temperature controller. The following list explains how the unit will operate when the knob is placed in the specified position shown in the figure.
Do not calibrate the patient adjustable warming unit ! Warning: above 43°C.
Perform all calibrations of the patient adjustable warming ! Caution: unit using a Model 90055 Temperature Test Kit. Perform calibration testing at an ambient temperature ! Caution: similar to the area where the patient adjustable warming unit will be used.
MODEL
875
The patient adjustable warming unit is intended for use in an ! Caution: ambient environment between 18 and 26°C (65 and 79°F).
Figure 3. Installing a patient adjustable warming unit onto an IV pole.
•
When the knob is in position A, the patient adjustable warming unit is OFF.
Mounting the Patient adjustable warming unit on a Bedrail
•
As the knob is rotated from position A to B, the knob clicks and the patient adjustable warming unit turns on LOW AIRFLOW and LOW HEAT.
SERVICE FREQUENCY •
Always recalibrate after performing service procedures.
As the knob rotates clockwise, the blower’s airflow and temperature increases.
•
Routinely calibrate every 6 months.
1.
2.
6
If the patient adjustable warming unit is not already connected to the rail-mount, slide the clip on the back of the patient adjustable warming unit into the groove of the rail-mount bracket. The assembly will click when the clip is fully seated in the rail-mount.
Figure 5. Placing the patient adjustable warming unit with a rail-mount onto the rail-to-wall bracket. *Phillips is a trademark of Phillips Screw Company
•
Hang the patient adjustable warming unit on the bedrail by the hooks on the rail-mount.
3M™ Bair Hugger™ Patient Adjustable Warming Unit Model 875 – Service Manual
GB / 34-8718-8799-7
7
Placing the Patient Adjustable Warming Unit on the Wall-mount Bracket 1.
2.
3.
Snap the patient adjustable warming unit into position by sliding the clip on the back of the patient adjustable warming unit into the groove of the wall-mount bracket. The assembly will click when the clip is fully seated in the wall-mount bracket.
Wrap the safety strap around the bedrail and connect the end to the fastener on the strap. The safety strap will prevent the patient adjustable warming unit from falling if the unit is accidentally dislodged from the bedrail. Bedrail
Rail-mount
•
Mounting the Patient Adjustable Warming Unit with a Bair Hugger Suction Wall Mount Adapter Notice: When using the suction wall mount adapter, only hold the front of the adapter when increasing/decreasing the expander. Over torquing the suction wall mount adapter may cause device damage.
At position C, the patient adjustable warming unit is on HIGH HEAT and HIGH AIRFLOW. The air temperature will stabilize at 43±3°C (109±5.4°F).
Lift the patient adjustable warming unit straight up to remove it from the wall-mount bracket. Safety strap
NOTE: It may be necessary to gently strike the case bottom in an upward fashion with the palm of your hand to release the clip from the wall-mount bracket.
System
System
System
System System
MODEL
875
1.
Slide the Bair Hugger suction wall mount adapter into the suction wall bracket. If the adapter is too large to fit, remove the expand spacer.
2.
Increase the expander on the suction wall mount adapter by gently turning the screw counter clockwise until the adapter is securely fastened (torque < 10 in-lbs). The adapter should not be able to move in any direction within the suction wall bracket once fastened.
System System
Wall-mount bracket MODEL
Figure 4. Mounting the patient adjustable warming unit on a bedrail using the rail-mount.
875
Case bottom
Mounting the Patient Adjustable Warming Unit with a Rail-mount to the Wall
Figure 2. Inserting the patient adjustable warming unit into the groove of the wall-mount bracket.
NOTE: A minimum of two wall anchors must be used to secure the rail-to-wall bracket to the wall. Additional wall anchors (up to a total of four) can be used for extra support.
Mounting the Patient Adjustable Warming Unit on an IV Pole
If mounted on an IV pole, the distance from the bottom of ! Caution: the unit to the floor must be less than 44" (112 cm) and the IV pole
1.
Using the wall-screw holes on the rail-to-wall bracket (see Figure 5) as a template, mark the position for the two wall anchors on the desired wall. The use of a level is recommended.
wheelbase diameter must be at least 28" (71 cm) to prevent tipping.
2.
Install two suitable wall anchors at the marked position. If using the provided self-drilling wall anchors, use a Phillips* screwdriver to screw the anchors into position. If installing into industrial-grade plasterboard, predrilling may be required.
1.
To prevent tipping, clamp the Model 875 patient adjustable warming unit to an IV pole at a height that provides stability. Clamping the warming unit no higher than 44" (112 cm) from the floor on an IV pole with a minimum 28" (71 cm) diameter wheelbase.
3.
Hold the rail-to-wall bracket in position against the wall.
2.
Turn the clamp knob on the IV pole-mount clockwise to tighten the clamp to the pole (Figure 3).
4.
Screw the two provided screws through the bracket holes and into the wall anchors.
3.
Snap the patient adjustable warming unit into position by sliding the clip on the back of the patient adjustable warming unit into the groove of the IV pole-mount. The assembly will click when the clip is fully seated in the IV pole-mount.
5.
If the patient adjustable warming unit is not already connected to the rail-mount, slide the clip on the back of the patient adjustable warming unit into the groove of the rail-mount. The assembly will click when the clip is fully seated in the rail-mount.
Clip
6.
Hook the patient adjustable warming unit with the attached rail-mount to the rail-to-wall bracket as depicted in Figure 5.
7.
Lift the patient adjustable warming unit straight up to remove it from the rail-to-wall bracket.
When using the suction wall mount adapter, only hold the ! Caution: front of the adapter when increasing/decreasing the expander to prevent pinching fingers. Notice: Over torquing may cause device damage
Figure 7. Handheld temperature controller
Using the Holder for the Handheld Temperature Controller Store the handheld temperature controller in the controller holder to help prevent cord clutter around the patient and accidental damage to the patient adjustable warming unit. 1.
Press the holder onto the patient adjustable warming unit hose so it is within the patient’s reach.
2.
Slide the handheld temperature controller into the holder. It should fit securely with the dial facing the patient.
Warming unit hose
3.
Handheld temperature controller holder
Slide the patient adjustable warming unit into the suction wall mount adapter.
System
Handheld temperature controller
System System
Figure 8. Using the holder for the handheld Temperature controller
Service Procedures
MODEL
875
Calibrating the Operating Temperatures
The handheld temperature controller must be at its ! Warning: maximum (warmest) setting when calibrating; otherwise, temperature
System System
settings may be inaccurate.
Rail-to-wall bracket Figure 6. Mounting the patient adjustable warming unit with a suction wall mount adapter. MODEL
875
Using the Handheld Temperature Controller
Clamp knob
IV polemount
System System
Rail-mount IV pole
After the hose has been connected to the warming gown, the patient can adjust the air temperature and airflow by turning the knob on the handheld temperature controller. The following list explains how the unit will operate when the knob is placed in the specified position shown in the figure.
Do not calibrate the patient adjustable warming unit ! Warning: above 43°C.
Perform all calibrations of the patient adjustable warming ! Caution: unit using a Model 90055 Temperature Test Kit. Perform calibration testing at an ambient temperature ! Caution: similar to the area where the patient adjustable warming unit will be used.
MODEL
875
The patient adjustable warming unit is intended for use in an ! Caution: ambient environment between 18 and 26°C (65 and 79°F).
Figure 3. Installing a patient adjustable warming unit onto an IV pole.
•
When the knob is in position A, the patient adjustable warming unit is OFF.
Mounting the Patient adjustable warming unit on a Bedrail
•
As the knob is rotated from position A to B, the knob clicks and the patient adjustable warming unit turns on LOW AIRFLOW and LOW HEAT.
SERVICE FREQUENCY •
Always recalibrate after performing service procedures.
As the knob rotates clockwise, the blower’s airflow and temperature increases.
•
Routinely calibrate every 6 months.
1.
2.
6
If the patient adjustable warming unit is not already connected to the rail-mount, slide the clip on the back of the patient adjustable warming unit into the groove of the rail-mount bracket. The assembly will click when the clip is fully seated in the rail-mount.
Figure 5. Placing the patient adjustable warming unit with a rail-mount onto the rail-to-wall bracket. *Phillips is a trademark of Phillips Screw Company
•
Hang the patient adjustable warming unit on the bedrail by the hooks on the rail-mount.
3M™ Bair Hugger™ Patient Adjustable Warming Unit Model 875 – Service Manual
GB / 34-8718-8799-7
7
TOOLS/EQUIPMENT NEEDED •
Model 90055 Temperature Test Kit (thermocouple included).
•
2-mm flat-headed screwdriver.
•
Medium Phillips screwdriver.
•
Calibrated thermometer.
8.
Turn the handheld controller to position B (Figure 7). After waiting several minutes, the thermocouple temperature should approach the ambient temperature.
9.
Reposition the case bottom with the filter and attach to the patient adjustable warming unit with two screws.
4.
Flip the unit over and remove the cover. This will expose the control board.
5.
Gently pull the end-of-hose coupler out of the patient adjustable warming unit by a few inches to expose the handheld controller wire.
6.
Disconnect the handheld controller wire from the control board. You will have to depress the tab on the handheld controller wire plug to free it from its port on the control board.
Notes: The Model 90055 Temperature Test Kit simulates the operating characteristics of a warming gown when used with the patient adjustable warming unit. When using the Model 90055 Test Kit, take temperature readings using a calibrated thermometer that can accept a male, subminiature connector and read a “K” type thermocouple (e.g., a Fluke Model 52 K/J Thermometer). If the test unit’s connector does not fit your thermometer, remove the connector from the test unit and attach a connector that fits your meter. Be certain to observe polarity. 3M assumes no responsibility for the reliability, safety, or performance of the patient adjustable warming unit if calibration tests or adjustments are made in any manner other than those described here. Improper measurement or adjustment of the normal operating temperature for the patient adjustable warming unit could result in patient exposure to temperatures outside of the indicated range and may lead to patient injury.
METHOD
Testing the Over-temperature (OT) Circuit
Perform all over-temperature circuit testing of the patient ! Caution: adjustable warming unit using a Model 90055 Temperature Test Kit.
Perform all over-temperature circuit testing at an ambient ! Caution: temperature similar to the area where the patient adjustable warming unit will be used.
1.
Turn the patient adjustable warming unit ON and select the maximum airflow and temperature by turning the handheld controller completely clockwise (refer to position C in Figure 6).
2.
Press the clip buttons on the hose end and insert the hose end into the temperature test kit.
Back of patient adjustable warming unit
Figure 10. Calibration access hole to adjust pot.
The patient adjustable warming unit is intended for use in an ! Caution: ambient environment between 18 and 26°C (65 and 79°F).
Figure 11. OT test button hole
Every six months.
TOOLS/EQUIPMENT NEEDED
SERVICE FREQUENCY
•
Medium Phillips screwdriver
Test every 6 months.
•
Replacement filters (available from 3M)
3.
Allow the system to warm 10 minutes before starting the calibration.
TOOLS/EQUIPMENT NEEDED
METHOD
4.
Extend the hose straight to its full length. Remove the two screws that attach the case bottom (purple) to the patient adjustable warming unit and slide it down the hose.
•
Model 90055 Temperature Test Kit (thermocouple included).
1.
•
Small screwdriver.
Disconnect the patient adjustable warming unit from the power source.
2.
Remove the two screws that attach the case bottom (purple) to the patient adjustable warming unit.
3.
Slide the case bottom down the hose, remove the used filter, and replace with a new filter.
4.
Reposition the case bottom (with the new filter) and attach to the patient adjustable warming unit with the two screws.
5.
Reconnect the patient adjustable warming unit to the power source and turn the handheld controller on to make sure the patient adjustable warming unit functions properly before returning to service.
5.
Ensure the thermocouple is inserted through the grommet of the cylindrical test kit body. The thermocouple tip should be approximately centered in the cross section of the test kit (see Figure 9).
Grommet
Figure 9. Test kit used to calibrate the patient adjustable warming unit.
6.
7.
•
Medium Phillips screwdriver.
•
Calibrated thermometer.
METHOD NOTE: The OT threshold temperature cannot be adjusted. If problems occur, contact 3M technical support. 1.
If continuing from Calibrating the Operating Temperatures, skip to step 6; otherwise, proceed to the next step.
2.
Turn the patient adjustable warming unit ON and select the maximum airflow and temperature setting by turning the handheld controller knob completely clockwise (refer to position C in Figure 6).
3. 4.
Allow the system to warm 10 minutes before starting the test.
5.
Extend the hose straight to its full length. If not already done, remove the two screws that attach the case bottom (purple) to the patient adjustable warming unit and slide it down the hose.
6.
Insert a flat-headed, 2-mm screwdriver into the calibration access hole to a depth of approximately 1/2 inch (see Figure 10). Turn the pot very slowly until the steady state temperature reading is 43°C. Wait at least 5 minutes to ensure steady state (43.0±1.0°C).
With a small screwdriver continuously press the OT test button (see Figure 11) for the duration of the over-temperature test.* When functioning properly, the “Over-Temp” indicator will illuminate and an audible alarm will sound. The peak test kit temperature will be below 56°C, and the heater will switch off within two minutes. If this does not occur, contact 3M technical support. *Pressing the OT test button places the heater in a full-on, unregulated condition; therefore, the unit may become slightly warm to the touch.
Proceed to the next section to test the Over-temperature (OT) circuit. 7.
8
Press the clip buttons on the hose end and insert the hose end into the temperature test kit.
NOTE: Verify calibration and test the OT circuit if it has been longer than six months since it was last serviced.
Figure 12. Removing the enclosure screws.
End-of-hose coupler
Figure 13. Pull the end-of-hose coupler out of the patient adjustable warming unit.
7.
To replace the hose or handheld controller remove the two screws that connect the wire collar to the mid-hose coupler and pull the wire out through the dedicated hole (see Figure 14).
Replacing the Handheld Controller and/or Hose
Do not disassemble the patient adjustable warming unit ! Warning: unless you are a qualified service technician. There are electrically live
NOTE: If you are replacing both the hose and handheld controller do not remove the wire collar from the hose. Proceed to Step 8.
parts within the patient adjustable warming unit when it is connected to a power source, even when the handheld controller is in the OFF position.
TOOLS/EQUIPMENT NEEDED •
Small Phillips screwdriver.
•
Medium Phillips screwdriver.
METHOD 1.
Disconnect the patient adjustable warming unit from the power source.
2.
Remove the two screws that attach the case bottom (purple) to the patient adjustable warming unit, and slide the case bottom down the hose.
3.
Remove the three screws on the back of the patient adjustable warming unit that hold the enclosures together (see Figure 12).
Turn the handheld controller to the OFF position to reset the alarm (position A, Figure 7). Wait ten seconds.
3M™ Bair Hugger™ Patient Adjustable Warming Unit Model 875 – Service Manual
Case bottom
Replacing the Filter SERVICE FREQUENCY
GB / 34-8718-8799-7
Mid-hose coupler
Wire collar
Figure 14. Removing the existing handheld controller wire from the hose.
8.
Using either a replacement handheld controller assembly and/or a replacement hose, thread the handheld controller wire through the dedicated hole. Hold the hose vertical and let the wire plug drop through to the end-of-hose coupler.
9.
Secure the wire collar to the mid-hose coupler with two screws.
10.
If replacing the hose, transfer the case bottom onto the new hose.
9
TOOLS/EQUIPMENT NEEDED •
Model 90055 Temperature Test Kit (thermocouple included).
•
2-mm flat-headed screwdriver.
•
Medium Phillips screwdriver.
•
Calibrated thermometer.
8.
Turn the handheld controller to position B (Figure 7). After waiting several minutes, the thermocouple temperature should approach the ambient temperature.
9.
Reposition the case bottom with the filter and attach to the patient adjustable warming unit with two screws.
4.
Flip the unit over and remove the cover. This will expose the control board.
5.
Gently pull the end-of-hose coupler out of the patient adjustable warming unit by a few inches to expose the handheld controller wire.
6.
Disconnect the handheld controller wire from the control board. You will have to depress the tab on the handheld controller wire plug to free it from its port on the control board.
Notes: The Model 90055 Temperature Test Kit simulates the operating characteristics of a warming gown when used with the patient adjustable warming unit. When using the Model 90055 Test Kit, take temperature readings using a calibrated thermometer that can accept a male, subminiature connector and read a “K” type thermocouple (e.g., a Fluke Model 52 K/J Thermometer). If the test unit’s connector does not fit your thermometer, remove the connector from the test unit and attach a connector that fits your meter. Be certain to observe polarity. 3M assumes no responsibility for the reliability, safety, or performance of the patient adjustable warming unit if calibration tests or adjustments are made in any manner other than those described here. Improper measurement or adjustment of the normal operating temperature for the patient adjustable warming unit could result in patient exposure to temperatures outside of the indicated range and may lead to patient injury.
METHOD
Testing the Over-temperature (OT) Circuit
Perform all over-temperature circuit testing of the patient ! Caution: adjustable warming unit using a Model 90055 Temperature Test Kit.
Perform all over-temperature circuit testing at an ambient ! Caution: temperature similar to the area where the patient adjustable warming unit will be used.
1.
Turn the patient adjustable warming unit ON and select the maximum airflow and temperature by turning the handheld controller completely clockwise (refer to position C in Figure 6).
2.
Press the clip buttons on the hose end and insert the hose end into the temperature test kit.
Back of patient adjustable warming unit
Figure 10. Calibration access hole to adjust pot.
The patient adjustable warming unit is intended for use in an ! Caution: ambient environment between 18 and 26°C (65 and 79°F).
Figure 11. OT test button hole
Every six months.
TOOLS/EQUIPMENT NEEDED
SERVICE FREQUENCY
•
Medium Phillips screwdriver
Test every 6 months.
•
Replacement filters (available from 3M)
3.
Allow the system to warm 10 minutes before starting the calibration.
TOOLS/EQUIPMENT NEEDED
METHOD
4.
Extend the hose straight to its full length. Remove the two screws that attach the case bottom (purple) to the patient adjustable warming unit and slide it down the hose.
•
Model 90055 Temperature Test Kit (thermocouple included).
1.
•
Small screwdriver.
Disconnect the patient adjustable warming unit from the power source.
2.
Remove the two screws that attach the case bottom (purple) to the patient adjustable warming unit.
3.
Slide the case bottom down the hose, remove the used filter, and replace with a new filter.
4.
Reposition the case bottom (with the new filter) and attach to the patient adjustable warming unit with the two screws.
5.
Reconnect the patient adjustable warming unit to the power source and turn the handheld controller on to make sure the patient adjustable warming unit functions properly before returning to service.
5.
Ensure the thermocouple is inserted through the grommet of the cylindrical test kit body. The thermocouple tip should be approximately centered in the cross section of the test kit (see Figure 9).
Grommet
Figure 9. Test kit used to calibrate the patient adjustable warming unit.
6.
7.
•
Medium Phillips screwdriver.
•
Calibrated thermometer.
METHOD NOTE: The OT threshold temperature cannot be adjusted. If problems occur, contact 3M technical support. 1.
If continuing from Calibrating the Operating Temperatures, skip to step 6; otherwise, proceed to the next step.
2.
Turn the patient adjustable warming unit ON and select the maximum airflow and temperature setting by turning the handheld controller knob completely clockwise (refer to position C in Figure 6).
3. 4.
Allow the system to warm 10 minutes before starting the test.
5.
Extend the hose straight to its full length. If not already done, remove the two screws that attach the case bottom (purple) to the patient adjustable warming unit and slide it down the hose.
6.
Insert a flat-headed, 2-mm screwdriver into the calibration access hole to a depth of approximately 1/2 inch (see Figure 10). Turn the pot very slowly until the steady state temperature reading is 43°C. Wait at least 5 minutes to ensure steady state (43.0±1.0°C).
With a small screwdriver continuously press the OT test button (see Figure 11) for the duration of the over-temperature test.* When functioning properly, the “Over-Temp” indicator will illuminate and an audible alarm will sound. The peak test kit temperature will be below 56°C, and the heater will switch off within two minutes. If this does not occur, contact 3M technical support. *Pressing the OT test button places the heater in a full-on, unregulated condition; therefore, the unit may become slightly warm to the touch.
Proceed to the next section to test the Over-temperature (OT) circuit. 7.
8
Press the clip buttons on the hose end and insert the hose end into the temperature test kit.
NOTE: Verify calibration and test the OT circuit if it has been longer than six months since it was last serviced.
Figure 12. Removing the enclosure screws.
End-of-hose coupler
Figure 13. Pull the end-of-hose coupler out of the patient adjustable warming unit.
7.
To replace the hose or handheld controller remove the two screws that connect the wire collar to the mid-hose coupler and pull the wire out through the dedicated hole (see Figure 14).
Replacing the Handheld Controller and/or Hose
Do not disassemble the patient adjustable warming unit ! Warning: unless you are a qualified service technician. There are electrically live
NOTE: If you are replacing both the hose and handheld controller do not remove the wire collar from the hose. Proceed to Step 8.
parts within the patient adjustable warming unit when it is connected to a power source, even when the handheld controller is in the OFF position.
TOOLS/EQUIPMENT NEEDED •
Small Phillips screwdriver.
•
Medium Phillips screwdriver.
METHOD 1.
Disconnect the patient adjustable warming unit from the power source.
2.
Remove the two screws that attach the case bottom (purple) to the patient adjustable warming unit, and slide the case bottom down the hose.
3.
Remove the three screws on the back of the patient adjustable warming unit that hold the enclosures together (see Figure 12).
Turn the handheld controller to the OFF position to reset the alarm (position A, Figure 7). Wait ten seconds.
3M™ Bair Hugger™ Patient Adjustable Warming Unit Model 875 – Service Manual
Case bottom
Replacing the Filter SERVICE FREQUENCY
GB / 34-8718-8799-7
Mid-hose coupler
Wire collar
Figure 14. Removing the existing handheld controller wire from the hose.
8.
Using either a replacement handheld controller assembly and/or a replacement hose, thread the handheld controller wire through the dedicated hole. Hold the hose vertical and let the wire plug drop through to the end-of-hose coupler.
9.
Secure the wire collar to the mid-hose coupler with two screws.
10.
If replacing the hose, transfer the case bottom onto the new hose.
9
11.
Plug the handheld controller wire into the port on the control board.
METHOD
METHOD
Replacing the Filter
12.
Making sure that the handheld controller wire passes through the clearance slot, insert the end-of-hose coupler into the patient adjustable warming unit (see Figure 15).
1.
Disconnect the patient adjustable warming unit from the power source.
1.
Disconnect the patient adjustable warming unit from the power source.
Replace the filter every six months or sooner if necessary. To order a replacement filter, contact 3M. Instructions for replacing the filter will be included with the replacement filter.
2.
Remove the two screws that attach the case bottom (purple) to the patient adjustable warming unit, and slide the case bottom down the hose.
2.
Loosen the two screws that secure the cord retainer to the patient adjustable warming unit. The screws should be backed out by 1/8" to allow the removal of the cord retainer (Figure 17).
Do not attempt to clean the air filter as it may be ! Caution: contaminated from use. Discard the filter in a manner consistent with
3.
Remove the three screws on the back of the patient adjustable warming unit that hold the enclosures together (see Figure 12).
3.
Rotate the cord retainer to free it from the screw heads and slide it off of the cord (Figure 18).
4.
Pull the plug of the old cord out of the unit. Discard the old cord.
5.
Insert the plug of the new cord into the unit.
6.
Position the cord retainer onto the new cord.
7.
Secure the cord retainer to the patient adjustable warming unit with the two screws.
8.
Reconnect the patient adjustable warming unit to the power source and turn the handheld controller on to make sure the patient adjustable warming unit functions properly before returning to service.
NOTE: Ensure the end-of-hose coupler ridge is seated under the control board.
Clearance slot
4. 5.
Flip the unit over and remove the cover. This will expose the control board. Remove and replace each with the same fuse rating.
Handheld controller wire Fuses Ridge of end-of-hose coupler
institutional protocol.
NOTE: Do not back the cord retainer screws out completely.
Cleaning Instructions 1.
Disconnect the warming unit from the power source before cleaning.
2.
Cleaning should be performed in accordance with hospital practices for cleaning equipment. After every use; wipe the warming unit, the handheld temperature controller, the outside of the warming unit hose, and any other surfaces that may have been touched. Use a damp, soft cloth and a hospital approved mild detergent, germicidal disposable wipes, disinfecting towelettes, or antimicrobial spray.
3.
Let air dry or dry with a separate clean soft cloth.
Notice: •
Do not use cleaning solutions with greater than 80% alcohol or solvents, including acetone and thinner, to clean the unit or hose. Solvents may damage the labels and other plastic parts.
•
Do not immerse the Bair Hugger warming unit, warming unit parts, or accessories in any liquid or subject them to any sterilization process.
Storage Figure 16: Removing the fuses
6. End-of-hose coupler
Store all components in a cool, dry place when not in use.
Replace the cover.
7.
Install the three screws on the back of the unit.
8.
Reposition the case bottom with the filter and attach to the patient adjustable warming unit with two screws.
9.
Plug the unit into a proper power source.
10.
Calibrate unit and test OT circuit.
Technical Support and Order Placement USA TEL: 800-733-7775
OUTSIDE OF THE USA Contact your local 3M representative.
When You Call for Technical Support Please be ready to give the technical support representative the serial number of your patient adjustable warming unit. The serial number is located on the back of the unit.
REPAIR AND EXCHANGE Call 3M technical support if your patient adjustable warming unit requires service. A technical support representative will give you a Return Authorization (RA) number. Please use this RA number on all correspondence concerning your patient adjustable warming unit. Your technical support representative will also send a shipping carton to you at no charge upon request.
Figure 15. Inserting the end-of-hose coupler into the patient adjustable warming unit.
13.
Replace the cover.
14.
Install the three screws on the back of the unit.
Technical Specifications
15.
Reposition the case bottom with the filter and attach to the patient adjustable warming unit with two screws.
Physical Characteristics DIMENSIONS OF PATIENT ADJUSTABLE WARMING UNIT
16.
Plug the unit into a proper power source.
17.
Calibrate unit and test OT circuit.
13 in. high x 4 in. deep x 7.7 in. wide Figure 18. Uninstalling the cord retainer.
Replacing the Fuses
Do not disassemble the patient adjustable warming unit ! Warning: unless you are a qualified service technician. There are electrically live parts within the patient adjustable warming unit when it is connected to a power source, even when the handheld controller is in the OFF position.
Figure 17. View of a fully installed cord retainer.
Replacing the Power Cord
Use only the power cord specified for this product and ! Warnings: certified for the country of use.
TOOLS/EQUIPMENT NEEDED
TOOLS/EQUIPMENT NEEDED
•
Small Phillips screwdriver
•
•
Medium Phillips screwdriver
10
Medium Phillips screwdriver.
3M™ Bair Hugger™ Patient Adjustable Warming Unit Model 875 – Service Manual
33 cm high x 10.2 cm deep x 19.6 cm wide
DIMENSIONS OF HANDHELD CONTROLLER
General Maintenance
2.5 in. wide x 5.8 in. long
Calibrating the Operating Temperatures
6.4 cm wide x 14.7 cm long
Calibrate the operating temperatures of the patient adjustable warming unit (1) after performing a service procedure and (2) routinely every six months. Perform the calibration in a similar environment temperature to where the will be used. You will need a Model 90055 Temperature Test Kit to perform the calibration. Calibration instructions are included with the test kit.
RELATIVE NOISE LEVEL
GB / 34-8718-8799-7
57.9 dBA
WEIGHT OF PATIENT ADJUSTABLE WARMING UNIT 7.0 lb; 3.2 kg.
11
11.
Plug the handheld controller wire into the port on the control board.
METHOD
METHOD
Replacing the Filter
12.
Making sure that the handheld controller wire passes through the clearance slot, insert the end-of-hose coupler into the patient adjustable warming unit (see Figure 15).
1.
Disconnect the patient adjustable warming unit from the power source.
1.
Disconnect the patient adjustable warming unit from the power source.
Replace the filter every six months or sooner if necessary. To order a replacement filter, contact 3M. Instructions for replacing the filter will be included with the replacement filter.
2.
Remove the two screws that attach the case bottom (purple) to the patient adjustable warming unit, and slide the case bottom down the hose.
2.
Loosen the two screws that secure the cord retainer to the patient adjustable warming unit. The screws should be backed out by 1/8" to allow the removal of the cord retainer (Figure 17).
Do not attempt to clean the air filter as it may be ! Caution: contaminated from use. Discard the filter in a manner consistent with
3.
Remove the three screws on the back of the patient adjustable warming unit that hold the enclosures together (see Figure 12).
3.
Rotate the cord retainer to free it from the screw heads and slide it off of the cord (Figure 18).
4.
Pull the plug of the old cord out of the unit. Discard the old cord.
5.
Insert the plug of the new cord into the unit.
6.
Position the cord retainer onto the new cord.
7.
Secure the cord retainer to the patient adjustable warming unit with the two screws.
8.
Reconnect the patient adjustable warming unit to the power source and turn the handheld controller on to make sure the patient adjustable warming unit functions properly before returning to service.
NOTE: Ensure the end-of-hose coupler ridge is seated under the control board.
Clearance slot
4. 5.
Flip the unit over and remove the cover. This will expose the control board. Remove and replace each with the same fuse rating.
Handheld controller wire Fuses Ridge of end-of-hose coupler
institutional protocol.
NOTE: Do not back the cord retainer screws out completely.
Cleaning Instructions 1.
Disconnect the warming unit from the power source before cleaning.
2.
Cleaning should be performed in accordance with hospital practices for cleaning equipment. After every use; wipe the warming unit, the handheld temperature controller, the outside of the warming unit hose, and any other surfaces that may have been touched. Use a damp, soft cloth and a hospital approved mild detergent, germicidal disposable wipes, disinfecting towelettes, or antimicrobial spray.
3.
Let air dry or dry with a separate clean soft cloth.
Notice: •
Do not use cleaning solutions with greater than 80% alcohol or solvents, including acetone and thinner, to clean the unit or hose. Solvents may damage the labels and other plastic parts.
•
Do not immerse the Bair Hugger warming unit, warming unit parts, or accessories in any liquid or subject them to any sterilization process.
Storage Figure 16: Removing the fuses
6. End-of-hose coupler
Store all components in a cool, dry place when not in use.
Replace the cover.
7.
Install the three screws on the back of the unit.
8.
Reposition the case bottom with the filter and attach to the patient adjustable warming unit with two screws.
9.
Plug the unit into a proper power source.
10.
Calibrate unit and test OT circuit.
Technical Support and Order Placement USA TEL: 800-733-7775
OUTSIDE OF THE USA Contact your local 3M representative.
When You Call for Technical Support Please be ready to give the technical support representative the serial number of your patient adjustable warming unit. The serial number is located on the back of the unit.
REPAIR AND EXCHANGE Call 3M technical support if your patient adjustable warming unit requires service. A technical support representative will give you a Return Authorization (RA) number. Please use this RA number on all correspondence concerning your patient adjustable warming unit. Your technical support representative will also send a shipping carton to you at no charge upon request.
Figure 15. Inserting the end-of-hose coupler into the patient adjustable warming unit.
13.
Replace the cover.
14.
Install the three screws on the back of the unit.
Technical Specifications
15.
Reposition the case bottom with the filter and attach to the patient adjustable warming unit with two screws.
Physical Characteristics DIMENSIONS OF PATIENT ADJUSTABLE WARMING UNIT
16.
Plug the unit into a proper power source.
17.
Calibrate unit and test OT circuit.
13 in. high x 4 in. deep x 7.7 in. wide Figure 18. Uninstalling the cord retainer.
Replacing the Fuses
Do not disassemble the patient adjustable warming unit ! Warning: unless you are a qualified service technician. There are electrically live parts within the patient adjustable warming unit when it is connected to a power source, even when the handheld controller is in the OFF position.
Figure 17. View of a fully installed cord retainer.
Replacing the Power Cord
Use only the power cord specified for this product and ! Warnings: certified for the country of use.
TOOLS/EQUIPMENT NEEDED
TOOLS/EQUIPMENT NEEDED
•
Small Phillips screwdriver
•
•
Medium Phillips screwdriver
10
Medium Phillips screwdriver.
3M™ Bair Hugger™ Patient Adjustable Warming Unit Model 875 – Service Manual
33 cm high x 10.2 cm deep x 19.6 cm wide
DIMENSIONS OF HANDHELD CONTROLLER
General Maintenance
2.5 in. wide x 5.8 in. long
Calibrating the Operating Temperatures
6.4 cm wide x 14.7 cm long
Calibrate the operating temperatures of the patient adjustable warming unit (1) after performing a service procedure and (2) routinely every six months. Perform the calibration in a similar environment temperature to where the will be used. You will need a Model 90055 Temperature Test Kit to perform the calibration. Calibration instructions are included with the test kit.
RELATIVE NOISE LEVEL
GB / 34-8718-8799-7
57.9 dBA
WEIGHT OF PATIENT ADJUSTABLE WARMING UNIT 7.0 lb; 3.2 kg.
11
MOUNTING OPTIONS
Safety System Characteristics
Wall mount bracket, IV pole clamp, suction wall mount adapter and rail-mount bracket with safety strap.
THERMOSTAT
HOSE
Independent electronic and heater (electromechanical)
OVERCURRENT PROTECTION
Detachable, flexible, and wipeable. 78 in. long x
Dual input fused line.
1.5 in. wide; 198 cm long x 3.8 cm wide
SAFETY FEATURE
FILTRATION SYSTEM Dust filter included.
Over-temperature protection: color indicator light illuminates, audible alarm sounds, and heater shuts down (blower continues to run).
RECOMMENDED FILTER CHANGE
ALARM SYSTEM
Change at least every 6 months.
Fault: amber Fault indication flashes, alarm sounds.
CERTIFICATIONS
Temperature Characteristics
IEC 60601-1; IEC/EN 60601-1-2; UL 60601-1; CAN/CSA-C22.2, No.601.1; EN 55011; EN 80601-2-35.
TEMPERATURE CONTROL Electronically controlled using integrated circuit sensor.
CLASSIFICATIONS
HEAT GENERATED
MEDICAL - GENERAL MEDICAL EQUIPMENT AS TO ELECTRICAL SHOCK, FIRE AND MECHANICAL HAZARDS ONLY IN ACCORDANCE WITH UL 60601-1; CAN/CSA-C22.2, No.601.1; ANSI/AAMI ES60601-1:2005 CSA-C22.2 No. 60601-1:08; EN 80601-2-35; Control No.4HZ8
1000 BTU/hr (average)
AVERAGE OPERATING TEMPERATURES AT THE END OF THE HOSE User adjustable from: ambient to 43±3°C (109±5.4°F)
•
Indoor use
•
Ambient temperature range of 18°C to 26°C (64°F to 79°F)
Classified under IEC 60601-1 Guidelines (and other national versions of the Guidelines) as Class I, Type BF, Ordinary equipment, Continuous operation. Not suitable for use in the presence of flammable anesthetic mixtures with air or with oxygen or nitrous oxide. Classified by Underwriters Laboratories Inc. with respect to electric shock, fire and mechanical hazards only, in accordance with UL 60601-1, EN 80601-2-35 and in accordance with Canadian/CSA C22.2, No. 601.1. Classified under the Medical Device Directive as a Class IIb device.
•
Altitude up to 2000m
Patient Adjustable Warming Unit ESD Precautions
•
Maximum, relative humidity up to 90%
•
Main supply voltage fluctuations up to ±10% of the voltage
•
Overvoltage category II (of IEC standard 60364-4-443) level of transient overvoltages present in the mains supply
Protection against electrostatic discharge (ESD) is important when working with the patient adjustable warming unit. Always be mindful of the immediate work area and any potentially hazardous ESD situations that could impact the Model 875 performance.
•
Rated pollution degree of 2
STORAGE/TRANSPORT TEMPERATURE -20°C to 60°C (-4°F to 140°F) Store all components in a cool, dry place when not in use.
RECOMMENDED OPERATING ENVIRONMENT
Patient Adjustable Warming Unit Use Environment This product is to be used in a Hospital environment only. Use of this product in a residential environment is strictly prohibited.
Guidance and Manufacturer’s Declaration – Electromagnetic Emissions
Guidance and Manufacturer’s Declaration – Electromagnetic Immunity The patient adjustable warming unit is intended for use in the electromagnetic environment specified below. The customer or the user of the patient adjustable warming unit should assure that it is used in such an environment. Immunity Test
RF emissions
Compliance Group 1
CISPR 11 RF emissions
Class B
CISPR 11
±6 kV contact
±8 kV air
±8 kV air
Electrical fast transient/ burst
±2 kV for power supply lines
±2 kV for power supply lines
±1 kV for input/output lines
±1 kV for input/output lines
±1 kV line to line
±1 kV line to line
±1 kV line(s) to earth
±1 kV line(s) to earth
<5% UT (>95% dip in UT) for 0,5 cycle
<5% UT (>95% dip in UT) for 0,5 cycle
40% UT (60% dip in UT) for 5 cycles
40% UT (60% dip in UT) for 5 cycles
70% UT (30% dip in UT) for 25 cycles
70% UT (30% dip in UT) for 25 cycles
<5% UT (>95% dip in UT) for 5 sec
<5% UT (>95% dip in UT) for 5 sec
Surge
Voltage dips, short interruptions and voltage variations on power supply input lines
Harmonic emissions
Class A
Flicker emissions
Complies
Electromagnetic Environment - Guidance Floors should be wood, concrete or ceramic tile. If floors are covered with synthetic material, the relative humidity should be at least 30%. Mains power quality should be that of a typical commercial or hospital environment.
Mains power quality should be that of a typical commercial or hospital environment. Mains power quality should be that of a typical commercial or hospital environment. If the user of the patient adjustable warming unit requires continued operation during power mains interruptions, it is recommended that the patient adjustable warming unit be powered from an uninterruptible power supply or a battery.
NOTE UT is the a.c. mains voltage prior to application of the test level.
Manufacturer’s Declaration – Electromagnetic Immunity – Not Life-Supporting The patient adjustable warming unit is intended for use in an electromagnetic environment in which radiated RF disturbances are controlled. The customer or the user of the patient adjustable warming unit can help prevent electromagnetic interference by maintaining a minimum distance between portable and mobile RF communications equipment (transmitters) and the patient adjustable warming unit as recommended below, according to the maximum output power of the communications equipment. Separation distance according to frequency of transmitter (in meters)
Rated maximum output power of transmitter (W)
150 kHz to 80 MHz
80 MHz to 800MHz
d = [3.5 ÷ V1]
d = [3.5 ÷ E1]
d = [7 ÷ E1]
0.01
0.12 m (5 inches)
0.12 m (5 inches)
0.23 m (10 inches)
0.1
0.37 m (15 inches)
0.37 m (15 inches)
0.74 m (2.5 feet)
1
1.17 m (3.9 feet)
1.17 m (3.9 feet)
2.30 m (7.8 feet)
10
3.69 m (12.3 feet)
3.69 m (12.3 feet)
7.37 m (24.5 feet)
100
11.67 m (38.9)
11.67 m (38.9)
23.30 m (77.8 feet)
Electromagnetic Environment - Guidance The patient adjustable warming unit uses RF energy only for its internal function. Therefore, its RF emissions are very low and are not likely to cause any interference in nearby electronic equipment. The patient adjustable warming unit is suitable for use in all establishments, including domestic establishments and those directly connected to the public low-voltage power supply network that supplies buildings used for domestic purposes.
Compliance Level
±6 kV contact
The patient adjustable warming unit is intended for use in the electromagnetic environment specified below. The customer or the user of the patient adjustable warming unit should assure that it is used in such an environment. Emissions test
IEC 60601 Test Level
Electrostatic discharge (ESD)
800 MHz to 2,5 GHz
For transmitters rated at a maximum output power not listed above, the recommended separation distance d in meters can be estimated using the equation applicable to the frequency of the transmitter, where P is the maximum output power rating of the transmitter in watts (W) according to the transmitter manufacturer. Note 1 – At 80 MHz and 800 MHz, the separation distance for the higher frequency applies. Note 2 – These guidelines may not apply is all situations. Electromagnetic propagation is affected by absorption and reflection from structures, objects, and people. Note 3 – V1 is the value from the conducted RF immunity test and E1 is the value from the radiated RF immunity test.
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3M™ Bair Hugger™ Patient Adjustable Warming Unit Model 875 – Service Manual
GB / 34-8718-8799-7
13
MOUNTING OPTIONS
Safety System Characteristics
Wall mount bracket, IV pole clamp, suction wall mount adapter and rail-mount bracket with safety strap.
THERMOSTAT
HOSE
Independent electronic and heater (electromechanical)
OVERCURRENT PROTECTION
Detachable, flexible, and wipeable. 78 in. long x
Dual input fused line.
1.5 in. wide; 198 cm long x 3.8 cm wide
SAFETY FEATURE
FILTRATION SYSTEM Dust filter included.
Over-temperature protection: color indicator light illuminates, audible alarm sounds, and heater shuts down (blower continues to run).
RECOMMENDED FILTER CHANGE
ALARM SYSTEM
Change at least every 6 months.
Fault: amber Fault indication flashes, alarm sounds.
CERTIFICATIONS
Temperature Characteristics
IEC 60601-1; IEC/EN 60601-1-2; UL 60601-1; CAN/CSA-C22.2, No.601.1; EN 55011; EN 80601-2-35.
TEMPERATURE CONTROL Electronically controlled using integrated circuit sensor.
CLASSIFICATIONS
HEAT GENERATED
MEDICAL - GENERAL MEDICAL EQUIPMENT AS TO ELECTRICAL SHOCK, FIRE AND MECHANICAL HAZARDS ONLY IN ACCORDANCE WITH UL 60601-1; CAN/CSA-C22.2, No.601.1; ANSI/AAMI ES60601-1:2005 CSA-C22.2 No. 60601-1:08; EN 80601-2-35; Control No.4HZ8
1000 BTU/hr (average)
AVERAGE OPERATING TEMPERATURES AT THE END OF THE HOSE User adjustable from: ambient to 43±3°C (109±5.4°F)
•
Indoor use
•
Ambient temperature range of 18°C to 26°C (64°F to 79°F)
Classified under IEC 60601-1 Guidelines (and other national versions of the Guidelines) as Class I, Type BF, Ordinary equipment, Continuous operation. Not suitable for use in the presence of flammable anesthetic mixtures with air or with oxygen or nitrous oxide. Classified by Underwriters Laboratories Inc. with respect to electric shock, fire and mechanical hazards only, in accordance with UL 60601-1, EN 80601-2-35 and in accordance with Canadian/CSA C22.2, No. 601.1. Classified under the Medical Device Directive as a Class IIb device.
•
Altitude up to 2000m
Patient Adjustable Warming Unit ESD Precautions
•
Maximum, relative humidity up to 90%
•
Main supply voltage fluctuations up to ±10% of the voltage
•
Overvoltage category II (of IEC standard 60364-4-443) level of transient overvoltages present in the mains supply
Protection against electrostatic discharge (ESD) is important when working with the patient adjustable warming unit. Always be mindful of the immediate work area and any potentially hazardous ESD situations that could impact the Model 875 performance.
•
Rated pollution degree of 2
STORAGE/TRANSPORT TEMPERATURE -20°C to 60°C (-4°F to 140°F) Store all components in a cool, dry place when not in use.
RECOMMENDED OPERATING ENVIRONMENT
Patient Adjustable Warming Unit Use Environment This product is to be used in a Hospital environment only. Use of this product in a residential environment is strictly prohibited.
Guidance and Manufacturer’s Declaration – Electromagnetic Emissions
Guidance and Manufacturer’s Declaration – Electromagnetic Immunity The patient adjustable warming unit is intended for use in the electromagnetic environment specified below. The customer or the user of the patient adjustable warming unit should assure that it is used in such an environment. Immunity Test
RF emissions
Compliance Group 1
CISPR 11 RF emissions
Class B
CISPR 11
±6 kV contact
±8 kV air
±8 kV air
Electrical fast transient/ burst
±2 kV for power supply lines
±2 kV for power supply lines
±1 kV for input/output lines
±1 kV for input/output lines
±1 kV line to line
±1 kV line to line
±1 kV line(s) to earth
±1 kV line(s) to earth
<5% UT (>95% dip in UT) for 0,5 cycle
<5% UT (>95% dip in UT) for 0,5 cycle
40% UT (60% dip in UT) for 5 cycles
40% UT (60% dip in UT) for 5 cycles
70% UT (30% dip in UT) for 25 cycles
70% UT (30% dip in UT) for 25 cycles
<5% UT (>95% dip in UT) for 5 sec
<5% UT (>95% dip in UT) for 5 sec
Surge
Voltage dips, short interruptions and voltage variations on power supply input lines
Harmonic emissions
Class A
Flicker emissions
Complies
Electromagnetic Environment - Guidance Floors should be wood, concrete or ceramic tile. If floors are covered with synthetic material, the relative humidity should be at least 30%. Mains power quality should be that of a typical commercial or hospital environment.
Mains power quality should be that of a typical commercial or hospital environment. Mains power quality should be that of a typical commercial or hospital environment. If the user of the patient adjustable warming unit requires continued operation during power mains interruptions, it is recommended that the patient adjustable warming unit be powered from an uninterruptible power supply or a battery.
NOTE UT is the a.c. mains voltage prior to application of the test level.
Manufacturer’s Declaration – Electromagnetic Immunity – Not Life-Supporting The patient adjustable warming unit is intended for use in an electromagnetic environment in which radiated RF disturbances are controlled. The customer or the user of the patient adjustable warming unit can help prevent electromagnetic interference by maintaining a minimum distance between portable and mobile RF communications equipment (transmitters) and the patient adjustable warming unit as recommended below, according to the maximum output power of the communications equipment. Separation distance according to frequency of transmitter (in meters)
Rated maximum output power of transmitter (W)
150 kHz to 80 MHz
80 MHz to 800MHz
d = [3.5 ÷ V1]
d = [3.5 ÷ E1]
d = [7 ÷ E1]
0.01
0.12 m (5 inches)
0.12 m (5 inches)
0.23 m (10 inches)
0.1
0.37 m (15 inches)
0.37 m (15 inches)
0.74 m (2.5 feet)
1
1.17 m (3.9 feet)
1.17 m (3.9 feet)
2.30 m (7.8 feet)
10
3.69 m (12.3 feet)
3.69 m (12.3 feet)
7.37 m (24.5 feet)
100
11.67 m (38.9)
11.67 m (38.9)
23.30 m (77.8 feet)
Electromagnetic Environment - Guidance The patient adjustable warming unit uses RF energy only for its internal function. Therefore, its RF emissions are very low and are not likely to cause any interference in nearby electronic equipment. The patient adjustable warming unit is suitable for use in all establishments, including domestic establishments and those directly connected to the public low-voltage power supply network that supplies buildings used for domestic purposes.
Compliance Level
±6 kV contact
The patient adjustable warming unit is intended for use in the electromagnetic environment specified below. The customer or the user of the patient adjustable warming unit should assure that it is used in such an environment. Emissions test
IEC 60601 Test Level
Electrostatic discharge (ESD)
800 MHz to 2,5 GHz
For transmitters rated at a maximum output power not listed above, the recommended separation distance d in meters can be estimated using the equation applicable to the frequency of the transmitter, where P is the maximum output power rating of the transmitter in watts (W) according to the transmitter manufacturer. Note 1 – At 80 MHz and 800 MHz, the separation distance for the higher frequency applies. Note 2 – These guidelines may not apply is all situations. Electromagnetic propagation is affected by absorption and reflection from structures, objects, and people. Note 3 – V1 is the value from the conducted RF immunity test and E1 is the value from the radiated RF immunity test.
12
3M™ Bair Hugger™ Patient Adjustable Warming Unit Model 875 – Service Manual
GB / 34-8718-8799-7
13
Maintenance Log
Guidance and Manufacturer’s Declaration – Emissions The patient adjustable warming unit is intended for use in the electromagnetic environment specified below. The customer or user of the patient adjustable warming unit should ensure that it is used in such an environment. Immunity Test Conducted RF IEC 61000-4-6 Radiated RF IEC 61000-4-3
IEC 60601 Test Level
Compliance Level
3 Vrms
3 Vrms
150 kHz to 80 MHz
3 V/m
Date
Maintenance Action Performed
Electromagnetic Environment – Guidance Portable and mobile communications equipment should be separated from the «Model» by no less than the distances calculated/listed below:
3 V/m
D=1.2
80 MHz to 2.5 GHz
D= 1.2
(80 to 800 MHz)
D= 2.3
(800 MHz to 2.5 GHz)
Where P is the max power in watts and D is the recommended separation distance in meters.
Field strengths from fixed transmitters, as determined by an electromagnetic site survey, should be less than the compliance levels (V1 and E1). Interference may occur in the vicinity of equipment containing a transmitter.
Electrical Characteristics
DEVICE RATINGS
BLOWER MOTOR
100-120 VAC, 50/60 Hz, 4.6A
Airflow: 7-13 cfm (3.3-6.1 L/S)
220-240 VAC, 50/60 Hz, 2.8 A
POWER CONSUMPTION
FUSES
Peak: 600W, Average: 340W
Fast Acting, 6.0A (120 VAC); 4.0A (220-230 VAC), High Breaking Capacity
LEAKAGE CURRENT
HANDHELD CONTROLLER CORD
Meets IEC 60601-1 and UL 60601-1 requirements
32" from hose collar, 4 cond., Max. voltage: 5V
HEATING ELEMENT 480W Resistive
POWER CORD 15-foot, SJT, 3 cond., 15A 4.6 m, HAR, 3 cond., 10A
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3M™ Bair Hugger™ Patient Adjustable Warming Unit Model 875 – Service Manual
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15
Maintenance Log
Guidance and Manufacturer’s Declaration – Emissions The patient adjustable warming unit is intended for use in the electromagnetic environment specified below. The customer or user of the patient adjustable warming unit should ensure that it is used in such an environment. Immunity Test Conducted RF IEC 61000-4-6 Radiated RF IEC 61000-4-3
IEC 60601 Test Level
Compliance Level
3 Vrms
3 Vrms
150 kHz to 80 MHz
3 V/m
Date
Maintenance Action Performed
Electromagnetic Environment – Guidance Portable and mobile communications equipment should be separated from the «Model» by no less than the distances calculated/listed below:
3 V/m
D=1.2
80 MHz to 2.5 GHz
D= 1.2
(80 to 800 MHz)
D= 2.3
(800 MHz to 2.5 GHz)
Where P is the max power in watts and D is the recommended separation distance in meters.
Field strengths from fixed transmitters, as determined by an electromagnetic site survey, should be less than the compliance levels (V1 and E1). Interference may occur in the vicinity of equipment containing a transmitter.
Electrical Characteristics
DEVICE RATINGS
BLOWER MOTOR
100-120 VAC, 50/60 Hz, 4.6A
Airflow: 7-13 cfm (3.3-6.1 L/S)
220-240 VAC, 50/60 Hz, 2.8 A
POWER CONSUMPTION
FUSES
Peak: 600W, Average: 340W
Fast Acting, 6.0A (120 VAC); 4.0A (220-230 VAC), High Breaking Capacity
LEAKAGE CURRENT
HANDHELD CONTROLLER CORD
Meets IEC 60601-1 and UL 60601-1 requirements
32" from hose collar, 4 cond., Max. voltage: 5V
HEATING ELEMENT 480W Resistive
POWER CORD 15-foot, SJT, 3 cond., 15A 4.6 m, HAR, 3 cond., 10A
14
3M™ Bair Hugger™ Patient Adjustable Warming Unit Model 875 – Service Manual
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Maintenance Log Date
16
Maintenance Action Performed
3M™ Bair Hugger™ Patient Adjustable Warming Unit Model 875 – Service Manual