Service Manual and Parts List
100 Pages
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Equipment for neonatal and premature infants: Infant Warmer
ORIGINAL
0123
Service Manual & Parts List
TO THE OPERATOR AND THE PERSON IN CHARGE OF MAINTENANCE AND CARE OF THE UNIT: ● This Manual describes various kinds of inspection needed to ensure proper operation of the Atom Sunflower Warmer, including instructions for troubleshooting, those procedures to change certain settings which are not mentioned in the Operation Manual and important points to bear in mind in handling the unit. ● Various kinds of inspection, including periodical inspection, are described in detail in this Manual. They should be carried out only by those who are fully familiar with the operation of the unit, having adequate technical knowledge and skills required in inspecting the unit in general. ● If repairs seem to be required as a result of any inspection described in this Manual, either personnel with more advanced knowledge and skills should undertake the repair or you should contact your local Atom representative for repair service.
Distributed by:
w w w . p a r k e r h e a l t h . c o m . a u
Parker Healthcare Pty Ltd Head Office & International Department:
16 Redland Drive, Mitcham VIC 3132 Australia Ph: +61 3 9872 0222 Fax: +61 3 9873 5911 Email: [email protected]
EU OFFICE Via Libia, 54 - 20081 Abbiategrasso (MI) - Italy Tel: +39 02 99763101 Fax: +39 02 99763110
INTRODUCTION This Service Manual & Parts List deals with the specifications, operation, and maintenance of the Sunflower Warmer. Atom is by no means responsible for any malfunction arising from a user ignoring the instructions for operation and maintenance described in this Manual as well as for any accident attributable to repair by someone other than technical personnel belonging to or authorized by Atom. This Manual contains description of all the functions available, including the mattress platform tilting. Please skip any section unrelated to your unit. Read this Manual carefully and familiarize yourself thoroughly with its contents before operating the unit. Keep this Manual where it is readily accessible for reference when needed. If any technical problem should arise, please contact your local Atom representative.
CAUTION Used parts and products past their expected life span should be disinfected and/or sterilized to prevent infection from them and then disposed of in accordance with applicable waste disposal laws and regulations. Federal (US and Canada) law restricts this device to sale by or on order of a physician.
INTENDED USE The Sunflower Warmer is a radiant-warming open-type incubator for newborns and premature neonates. It is intended for pre-operative and post-operative intensive care in neonatal surgery, temperature control in neonatal hypothermia, observation and examination in newborn nurseries, prevention of body temperature drop shortly after delivery, etc. The Sunflower Warmer has the capability to control the infant’s skin temperature and is equiped with a CPR timer.
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SAFETY INFORMATION Instructions to ensure the safe operation of the unit are found throughout this Manual. Please read the Manual carefully before operating the unit. Please follow the instructions when operating the unit.
Basic Instructions 1. Follow the instructions for the safe use of the unit. Follow the operating instructions described in this Manual for the safe use of the unit. 2. Inspect the unit on a periodical basis. Periodical inspection is needed to use the unit in the optimum condition. 3. Never use the unit if it is found to be defective. If any damage or malfunction of the unit is discovered, stop using it immediately and contact your local Atom representative. 4. Follow the EMC information given in this Manual. Electric equipment for medical use needs special precautions regarding EMC. It needs to be installed and put into service according to the EMC information provided in this Manual.
Definition of Warning Indication Three levels of warning indication are used throughout this Manual and on the unit. They are defined as follows. A DANGER notice indicates an immediately hazardous situation which, if not avoided, DANGER: will result in death or serious injury, serious damage to property such as total loss of use of equipment, or fire. A WARNING notice indicates an indirectly (potentially) hazardous situation which, WARNING: if not avoided, will result in death or serious injury, serious damage to property such as total loss of use of equipment, or fire. A CAUTION notice indicates a hazardous situation which, if not avoided, can result in
CAUTION: minor or moderate injury, partial damage to equipment, and loss of data stored in computers.
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Definition of Symbols 1. Symbols to indicate danger, warning or caution Symbol Title and indication General attention Indicates unspecified general danger, warning or caution. Caution: Hot surface Indicates that the surface can be dangerously hot under certain conditions.
2. Symbols to prohibit action Symbol
Title and indication
General prohibition Indicates unspecified general prohibition. Prohibition of disassembly Indicates prohibition of disassembly of the unit where it may cause an electric shock or other hazards. Prohibition of use of fire Indicates prohibition of use of fire where an external use of fire may cause the unit to ignite under certain conditions. Prohibition of contact Indicates prohibition of contact.
3. Symbols to give instructions for action Symbol
Title and indication
General instruction Indicates unspecified general action on the part of the user. Connect a ground wire Instructs the user to connect the ground wire without fail where the unit is provided with a ground terminal. Remove the power plug from the power outlet Instructs the user to remove the power plug from the power outlet in the case of malfunction or when there is a threat of lightning. 4. Symbols of international standards (IEC) Symbol
Title and indication
Equipment partially on Indicates that a part of the device is “ON.”
Equipment partially off Indicates that a part of the device is “OFF.” Type BF applied part Indicates that the device is classified as Type BF in terms of the degree of protection against an electric shock.
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Symbol
Title and indication Alarm silenced Indicates either a control switch to silence the alarm permanently or temporarily or that the alarm is silenced. Caution Indicates that the user needs to see a relevant accompanying document before operating the unit. Manufacturer This symbol indicates the name and the address shown adjacent to the symbol is of the manufacturer. Date of manufacture Indicates the date when the unit was manufactured in the factory. Authorised representative in the european community This symbol indicates the name and the address shown adjacent to the symbol is of the authorised representative in the European Community. WEEE symbol In the EC area, an electrical and electronic product falling in one of the categories specified by “DIRECTIVE 2002/96/EC OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 27 January 2003 on Waste Electrical and Electronic Equipment (WEEE)” should be disposed of in a manner consistent with relevant laws and regulations. This symbol indicates that the above-mentioned requirement applies to this product.
5. Other symbols Symbol
Title and indication
Setting Indicates that a setting is increased.
Setting Indicates that a setting is decreased. Alarm Indicates a power failure alarm. AC power Indicates that the device is connected to AC power. Alarm Indicates that a system of the unit is in an abnormal condition. Alarm 1. In manual control (when monitoring the skin temperature): Indicates that the skin temperature has become 40°C or higher. 2. In servo control: Indicates that the skin temperature deviates from the set temperature by 1.0°C or by 0.5°C. Alarm Indicates that a wire of the skin temperature probe has snapped or short-circuited.
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Symbol
Title and indication Alarm Indicates that 15 minutes have elapsed since the heater was turned on. Setting Indicates a setting of the skin temperature. Skin temperature Indicates a detected current skin temperature of the infant. Heater Indicates the manual control mode, the manual control mode switch and the heater output. Skin temperature Indicates the servo control mode, the servo control mode switch and the skin temperature probe connecting port. Preheat Indicates the preheat mode and the preheat mode switch. Temperature unit Indicates the switch to select either °C or °F as the unit of the temperature to be displayed. Timer Indicates the timer. Timer Indicates the timer switch. Load capacity Indicates the maximum load capacity. Prohibition of lubrication Indicates that lubrication is prohibited. Avoid getting caught Indicates that the user must avoid getting caught in the gap in the device. Locking of the baby guard Indicates that the user must check whether the baby guard is securely locked.
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Precautions on Jamming
WARNING Electric surgical knives, portable and mobile communication equipment, and other devices which generate high-frequency noise can cause jamming to various kinds of electric equipment for medical use and thus result in malfunction. Since portable and mobile communication equipment, etc. are often used in medical facilities, some measures should be taken to prevent jamming due to such devices. Portable and mobile communication equipment and other devices which generate high frequency should not be used near the unit during its operation to prevent malfunction of the unit due to jamming.
Responsibility for Care of Equipment
CAUTION It is the user (a hospital, a doctor's office, a clinic) that is responsible for the operation, maintenance and care of the electric equipment for medical use. The equipment should be used only by medical personnel.
Prohibition of Modification
WARNING Do not disassemble or modify the unit. Otherwise, a fire, an electric shock or injury may result.
Periodical Inspection
CAUTION Proper periodical inspection is needed to use the unit in the optimum condition.
In Case of Trouble
CAUTION If any abnormal condition or trouble should occur to the unit, indicate on the unit that it is out of order and contact your local Atom representative or service engineer immediately. See the end of this Service Manual & Parts List for whom to contact. If any abnormal condition or trouble should occur, do not use the unit until it has been repaired completely by a service engineer so as to prevent possible danger.
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INTRODUCTION ... 1 PLEASE READ WITHOUT FAIL [1]
[2] [3]
Operating Precautions ... 9 1-1.
DANGER ... 9
1-2.
WARNING ... 10
1-3.
CAUTION ... 12
Product Variations ... 14 Parts Identification ... 15 3-1. Main Body ... 15 3-2. Operation Panel ... 16
MAINTENANCE [4]
Maintenance Inspection... 19
[5]
Inspection Before Use ... 20 Quarterly Inspection ... 21 Inspection Checklist ... 22 Periodical Replacement Parts ... 23
Cleaning and Disinfection ... 24 5-1. Main Body ... 25 5-2. Others ... 25
[6]
Troubleshooting ... 26
INFORMATION DISASSEMBY AND REPLACEMENT [7]
[8]
Disassembly and Replacement Procedures ... 39
List of Setting Items ... 63 Enabling/Disabling the Key Click ... 64 Setting the Alarm Volume ... 64 Changing the Temperature Deviation Limit of the Set Temperature Alarm ... 65 8-5. Setting the Timer Mode ... 65 8-6. Changing the Time on the Apgar Timer... 66 8-1. 8-2. 8-3. 8-4.
[9]
Block Diagram ... 67
[10] Wiring Diagram... 68 10-1. Power Unit Part ... 68 10-2. Hi-Low Stand Part... 69
APPENDIX
7-1. Canopy ... 39 7-1-1. Replacing the Upper Front Canopy Cover ... 40 7-1-2. Replacing the Lower Rear Canopy Cover ... 41 7-1-3. Replacing the Lower Front Canopy Cover ... 41 7-1-4. Replacing the Heater Module ... 42 7-1-5. Replacing the Heater... 42 7-1-6. Replacing the Cover Plate ... 43 7-2. Power Unit... 43 7-2-1. Replacing the Power Cord ... 44 7-2-2. Replacing the Fuse ... 44
Settings ... 63
INFORMATION
6-1. Alarms ... 26 6-2. Troubleshooting ... 28 6-3. Troubleshooting Flowchart ... 29 6-3-1. Canopy ... 30 6-3-2. Power Unit ... 32 6-3-3. Mattress Platform ... 36
DISASSEMBY AND REPLACEMENT
4-1. 4-2. 4-3. 4-4.
MAINTENANCE
7-2-3. Replacing the Power Failure Alarm Battery ... 45 7-2-4. Replacing the Main Board ... 45 7-2-5. Replacing the Power Switch ... 45 7-2-6. Replacing the Operation Panel Sheet ... 45 7-2-7. Replacing the Skin Temperature Probe Board ... 46 7-2-8. Replacing the Triac Board... 46 7-2-9. Replacing the Speaker ... 47 7-2-10. Replacing the Power Transformer ... 47 7-2-11. Replacing the Breaker ... 48 7-2-12. Replacing the AC Inlet... 48 7-3. Table ... 48 7-3-1. Replacing the Front Baby Guard/ Side Baby Guard ... 48 7-3-2. Replacing the Rear Baby Guard ... 50 7-3-3. Replacing the Pivot Shaft ... 50 7-3-4. Replacing the Cushioning Material ... 51 7-3-5. Replacing the Rotary Damper... 51 7-3-6. Replacing the Mattress Platform ... 53 7-3-7. Replacing the Corner Grip Cap ... 53 7-3-8. Replacing the Tilting Unit Wire ... 53 7-3-9. Replacing the Mattress Platform Tilting Unit ... 54 7-4. Stand ... 56 7-4-1. Type Hi-Low/Tilt ... 57 7-4-2. Types Cabinet/Tilt, Cabinet/Steel and Cabinet/Wood ... 61 7-4-3. Type Stand ... 62
PLEASE READ WITHOUT FAIL
CONTENTS
[11] Parts List ... 70 11-1. Fig.1 Overall View and Accessories (Types Hi-Low/Tilt, Cabinet/Tilt, Cabinet/Steel and Cabinet/Wood) ... 70 11-2. Fig.2 Overall View and Accessories (Types Stand and Wall Mount) ... 72 11-3. Fig.3 Canopy ... 74 11-4. Fig.4 Power Unit ... 76 11-5. Fig.5 Table ... 78 11-6. Fig.6 Base (Type Hi-Low/Tilt) ... 80 11-7. Fig.7 Base (Types Cabinet/Tilt, Cabinet/Steel and Cabinet/Wood) ... 82 11-8. Fig.8 Base (Type Stand) ... 84
APPENDIX [12] Technical Information ... 86 12-1. Principle of Operation... 86 12-1-1. Description of the Principle of Operation... 86 12-1-2. Illustration of the Principle of Operation... 87 12-2. Technical Data ... 88 12-3. EMC Level and Classification ... 90
[13] Disposal ... 94
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Operating Precautions
Please follow the operating instructions described in this Manual for the safe use of the unit. The unit should be operated only by those who have been trained and instructed properly in its operation under the supervision of qualified medical personnel familiar with the currently known risks and benefits associated with the use of a radiant warmer. The unit should be operated only for its intended use.
1-1.
DANGER
PLEASE READ WITHOUT FAIL
[1] Operating Precautions
Death or serious injury, damage to equipment or a fire will result if the instructions given below are not followed. Monitor the infant’s skin temperature when operating the unit. The operator must monitor the infant’s skin temperature when operating the unit. Avoid unattended use of the unit. Do not leave the unit unattended with the baby guards folded down. If the baby guards are left folded down, the infant may fall out and get fatally injured. Never leave the unit unattended with the baby guards folded down. Do not tilt the mattress platform with the baby guards folded down. If the mattress platform is tilted with the baby guards folded down, the infant may fall out. When you pull up and lock the baby guards in position, be sure to check that no mattress sheet or linen is caught between any of the baby guards and the mattress platform. Make sure that the baby guards are locked securely. If linen or other object is caught between any of the baby guards and the mattress platform, remove it. Otherwise, the baby guards will not be locked completely. The baby guards may swing down and the infant may fall out of the unit and suffer serious or fatal injury. Stop using the unit immediately and seek repair if the locking mechanism of the baby guards or other related parts should be found faulty in any way. The infant may fall out. Never place a body warmer or any other possible ignition source in or near the unit. Use of oxygen will increase the risk of explosion or fire. Body warmers or other devices in which fire is used or which will generate a spark may cause an explosion or a fire if used near the unit. Do not use the unit in the presence of a flammable anesthetic gas. The unit may cause an explosion or a fire if used in the presence of such a gas. Do not use ether, alcohol or any other ignitable substance. Even a small amount of ether, alcohol or any other ignitable substance may cause a fire when mixed with the oxygen supplied to the unit. Do not hang any flammable materials on the canopy. It may cause a fire.
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Operating Precautions
Ground the unit securely. Otherwise, a leakage current may cause an electric shock. In order to complete the ground connection, connect the power cord only to a properly grounded 3P power outlet including a ground terminal. Do not operate the unit if you have any doubt about its ground connection. Do not use a device generating high frequency near the unit. To prevent malfunction of the unit due to jamming, do not use electric surgical knives, portable and mobile communication equipment and other devices which generate high frequency near the unit during its operation. Avoid severe shock or impact to unit. The screws or fixed parts may become loose. Do not put the peripheral devices just below the heater or in the area radiated with heat. The peripheral devices are heated, which may cause their breakage and a fire.
1-2.
WARNING
Death or serious injury due to a fire or an electric shock will result if the instructions given below are not followed. Be sure to follow the doctor’s instructions in setting the infant’s skin temperature. Be sure to follow the doctor’s instructions in supplying oxygen. Use only oxygen for medical use. Be sure to bear in mind the following precautions during oxygen supply. tDo not place a body warmer, a flashlight, oils and fats, or flammable vaporizable matters near the unit. tUse pure cotton for the infant’s clothing, bed sheets, etc. Do not use any material that is easily charged with static electricity. tUse pure cotton or fire-proof materials for the clothing of doctors, nurses and ambulance staff who handle this unit. Bear in mind the following precautions while using oxygen supply equipment. tIf oil, grease or a grease-like substance should get in contact with pressurized oxygen, a violent spontaneous ignition may occur. Do not let such substances stick to the oxygen pressure regulator, the oxygen cylinder valve, piping, connections and other parts of oxygen supply equipment. tOn a high-pressure oxygen cylinder, use only a tested pressure reducing valve or pressure regulating valve indicated specifically for oxygen supply. Do not use such a valve for any gas other than air or oxygen. It is dangerous to use a valve to supply a gas other than air or oxygen and then to supply oxygen again. Smoking is prohibited in the room where the unit is installed. Do not place any possible ignition sources in the room.
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Operating Precautions
Use only the power cord supplied with the unit. Otherwise, a fire or an electric shock may result.
PLEASE READ WITHOUT FAIL
Avoid damaging the power cord. A damaged power cord may cause a fire or an electric shock. tDo not get the power cord caught between the unit and the wall, a shelf or the floor. tDo not place the power cord near a heating apparatus or heat it. tDo not put anything heavy on the power cord. tAlways grasp the power plug with your hand to remove the power cord from the power outlet. A damaged power cord should be replaced immediately with a new one.
Do not touch the heater with your hand when the heater is on. You may burn yourself. Do not touch the power plug with a wet hand. Touching the power plug with a wet hand may cause an electric shock. Do not disassemble or modify the unit. Disassembling or modifying the unit may cause a fire, an electric shock or injury. Do not install the unit where it will be exposed to excessive humidity, dust or steam. Installing the unit in such a place may cause a fire or an electric shock. Before cleaning and disinfecting the unit, be sure to turn the power switch off, remove the power plug, and allow the heater temperature to drop sufficiently. The power outlet should be located near the unit to prevent accidental contact with a trailing power cord. Use a separate power outlet for each unit. Do not put many loads on one power outlet. In order to complete the ground connection, connect the power cord only to a properly grounded 3P power outlet including a ground terminal. Do not operate the unit if you have any doubt about its ground connection. Ground peripheral electric equipment securely. The electrical rating of this unit is as follows: AC120/230V; power consumption 700VA; frequency 50/60Hz; operating voltage range AC120/230V±10% Do not connect the unit to any other power source. The unit should be serviced only by qualified personnel. Be sure to inspect the unit at the start of each day. Operating the unit without inspecting it before at the start of each day may let a defect pass unnoticed and cause a potentially unfavorable outcome.
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Operating Precautions
1-3.
CAUTION
Injury or damage to surrounding objects may result if the instructions given below are not followed. Be sure to clean and disinfect the unit before using it for the first time after purchase. The unit is shipped without being disinfected. During the standby mode, be sure to preheat the unit in order to keep the mattress surface temperature stable. Place the infant on the mattress only after the mattress surface temperature has stabilized. Do not twist or pull the cords by force. If any defect should be found, ask an expert for repair without attempting to repair it yourself. When feeding the cords and tubes into the unit, be very careful not to let them wind or tighten around the patient. Remove the power plug from the power outlet before moving the unit to another place or when the unit is not going to be used for a long time. Moving the unit to another place with the power plug connected to the power outlet will damage the power cord and may cause a fire or an electric shock. Remove the power plug from the power outlet before cleaning and disinfecting the unit. Cleaning and disinfecting the unit with the power plug connected to the power outlet may cause an electric shock. Install the unit on a stable surface. Installing the unit on an unstable platform or a tilted surface will cause it to fall or drop and may injure someone. Therefore, before installing the unit, make sure that the place where the unit is to be installed is stable and strong enough to support the weight of the unit. Install the unit out of reach of small children. Do not operate the unit with the canopy covered with a cloth, etc. Operating the unit covered with a cloth or pressed tightly against the wall may cause a fire or an electric shock due to overheating. Do not install the unit in direct sunlight or near a heating apparatus. Do not expose the unit to extraordinarily high temperature or excessive humidity. Do not place anything heavy on the unit. The safe working load of the mattress platform is 10 kg. Be careful not to overload it. Do not let the unit hit anything, fall, or drop inadvertently.
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Operating Precautions
Check the operation of the peripheral devices. If a device transmitting or receiving weak signals is installed near the unit, it may be affected by the electromagnetic waves generated by the latter. Check the operation of the peripheral devices for any effect before using the unit in clinical settings. Stop using the unit immediately if any trouble is detected. Be sure to cover the mattress with a mattress sheet. The mattress is not breathable and may cause a bedsore.
PLEASE READ WITHOUT FAIL
Do not attach any peripheral device that is not specified by Atom to the unit.
The unit is not transport incubator. When taking radiographs with the supplied X-ray cassette tray, read the included documentation and instruction manuals for the radiation device, and make sure that necessary protection measures are taken.
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Product Variations
[2] Product Variations
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Sunflower Warmer Hi-Low/Tilt
Sunflower Warmer Cabinet/Tilt
Sunflower Warmer Cabinet/Steel
Sunflower Warmer Cabinet/Wood
Sunflower Warmer Stand
Sunflower Warmer Wall Mount
Parts Identification
3-1.
PLEASE READ WITHOUT FAIL
[3] Parts Identification Main Body ⑫ ① ⑩
⑪ ⑨
5A (10A)
BREAKER
5A (10A)
230V~ 50/60Hz (120V~ 60Hz)
③
⑧
②
⑦
⑬
⑥
BREAKER 2A (3A)
2A (3A)
230V~ 50/60Hz (120V~ 60Hz)
④ ⑭
⑤
No. ① ② ③ ④ ⑤ ⑥ ⑦
Name Canopy Mattress Baby guard Foot switch Caster Mattress platform tilting lever Mattress platform
⑮
* ( )...UL
No. ⑧ ⑨ ⑩ ⑪ ⑫ ⑬ ⑭ ⑮
Name Tube introduction slit packing Operation panel Alarm Indicator Heater Breaker AC inlet Breaker (for Type Hi-Low Stand) AC inlet (for Type Hi-Low Stand)
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Parts Identification
3-2.
Operation Panel
■ Alarm Symbol
Function Alarm indicator Flashes when the set heat alarm (MC) or the internal error system alarm comes on. Mains on indicator Comes on when the power cord is connected to the AC power source. Power failure alarm indicator Comes on when the power cord gets disconnected from the AC power source while the unit is in operation or in the event of power failure. System failure alarm indicator Flashes when a system error or some other trouble is detected. Alarm silence indicator Comes on when an audible alarm is silenced. Set temperature alarm indicator Comes on when a displayed skin temperature deviates from the set temperature by more than 1ºC (or 0.5ºC alternatively) in the servo control mode. Flashes when skin temperature exceeds 40ºC in the manual control mode. Skin temperature probe alarm indicator Flashes when a wire of the skin temperature probe has snapped or short-circuited in the servo control mode. Comes on when it has snapped or short-circuited in the manual control mode. Baby check alarm indicator Comes on in 15 minutes when the heater output is set to 35% or higher. Can be reset by pressing the alarm silence/reset switch but comes on again in another 15 minutes.
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Parts Identification
Symbol
Function Operation mode indicator (servo control mode) The servo control mode indicator is on in servo control operation. (It flashes when the skin temperature is being set.) Operation mode indicator (manual control mode) The manual control mode indicator is on in manual control operation. (It flashes when the heater output is being set.) Preheat indicator Comes on when the preheating function is on (only in the manual control mode).
PLEASE READ WITHOUT FAIL
■ Temperature
Heater output indicator Indicates the heater output level (1~100%) with a bar graph. Skin temperature display Displays the infant’s skin temperature detected by the skin temperature probe. Setting display 1) Displays a set skin temperature in servo control operation. In this case, the “ºC” indicator on the upper right of the display is on. (The display flashes when the skin temperature is being set.) 2) Displays the heater output in manual control operation. In this case, the “%” indicator on the lower right of the display is on. 3) Displays “ ” in preheating. Switch Servo control mode switch Press this switch to select servo control operation. Manual control mode switch Press this switch to select manual control operation. Preheat switch Press this switch in the manual control mode to start preheating. C/F selector switch Press and hold this switch for one second to toggle between ºC and ºF. Skin temperature probe connecting port
■ Timer Symbol
Function Timer display Displays up to 60 minutes 00 seconds. Second counter Counts up 6 seconds twice every 30 seconds. The LED’s illuminate one by one from 0 to 6, indicating 0, 1, 2...6 seconds. Switch Timer switch Press this switch to start/reset the timer.
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Parts Identification
■ Others Symbol
Function Setting up/down switch Press this switch to set the skin temperature, and the heater output to a desired level. To set the skin temperature, press the servo control mode switch and then this switch. To set the heater output, press the manual control mode switch and then this switch. Alarm silence/reset switch Press this switch to silence or reset an audible alarm. Power switch Press this switch to turn the power on or off.
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