Contoura Model 380 Service Manual June 2011

INTRODUCTION 1.1

About This Manual

This manual contains information on servicing and maintenance of the ArjoHuntleigh C o n t o u r a 3 8 0 bed. The manual comprises the following sections: Section 1 - Introduction: (this section) Includes a general description of the equipment with an explanation of the function and operation of the controls. Section 2 - Operational Maintenance : Describes routine procedures and checks to ensure correct operation during the service life of the equipment. Section 3 - Preventive Maintenance : Gives details of regular, periodic maintenance actions to ensure correct operation of the equipment. Section 4 - Testing : Defines a serviceability test to verify correct operation of the equipment if function is suspect or following any maintenance or servicing procedure. Section 5 - Troubleshooting : Contains details of fault symptoms, their possible cause and suggested actions to rectify the problem. Section 6 - Servicing Instructions : Contains procedures for removal and installation of replaceable parts and sub-assemblies. Section 7 - Calibration : Gives calibration procedures for the electrical controls and actuators. Section 8 - Technical Data : Contains a list of technical data for the equipment and components. Appendix A - Assembly Spares Manual : Contains drawings or diagrams with detailed parts lists for the identification of replaceable parts.

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1.2

Product Description ®

The Contoura 380 is an electrically-actuated acute care bed with multiple functions to provide the best nursing position for both patient and carer. The following features, dependant upon the bed configuration, are available within the range:



Two and four section electrically operated profiling mattress platform with independent adjustment of platform sections.



Height adjustment.



Electrically actuated Trendelenberg tilt with horizontal stop feature.



Pro-Contour Backrest



Manually operated (mechanical) calf elevation.



Integral mattress platform extension.



Detachable ¾ length folding side rails.



Removable steel sheet mattress support surface sections.



150mm diameter castors with central operation for braking and steering.



Choice of removable head and foot panel designs.



Battery backup for all powered functions.



Dual sided CPR leavers for emergency release of backrest.



Lockout facility for all electric movements.



Auto CPR function

Please refer to the Contoura 380 User Guide for clinical applications, installation, operation, cleaning and correct usage of this product.

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1.3

Operation

1.3 (1) Brakes and Steering There are two coupled brake pedals at the foot end of the bed. 

When the pedal is pushed down from the horizontal free position to the Brake position the pedal operates all brake castors simultaneously and the bed is immobilised.



With the pedal is in the horizontal Free position, all the brakes are released and the bed can be moved in any direction.



With the pedals in the up Steer position, a steering castor is engaged at one end of the bed to provide better control when pushing the bed in a straight line.

BRAKE

FREE

STEER

Fig 1-2 Castors – Brakes and steering

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1.3 (2) Side Rails

WARNING

Side Rail contact points are identified by this symbol. Care should be taken to keep hands and fingers away from these areas. To lower the side: Hold the top rail near the foot-end just in front of the joint (3). Pull the operating knob (1) and lower the side towards the foot of the bed controlling the descent speed (2). As the side begins to lower, release the operating knob (1).

3

Foot End

2

1 1

Fig.1-3 Side Rail Operation To raise the side: Lift the top rail until the operating knob automatically clicks into it’s locked position at maximum height. The side rail release mechanism contains a yellow band (1). When the operating knob is viewed from above and the yellow band can be seen, this means that the safety side is NOT securely locked in the upright position. The yellow band should NEVER be visible from above when the side rail is correctly in the locked position.

1.3 (3) Bed Extension Before extending the bed, ensure that the leg sections are lowered to the horizontal position.

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To extend the bed: Apply the brakes. Squeeze the latch lever (1) and handle (2) together and pull out the foot-end of the mattress platform (3). The foot-end of the mattress platform automatically locks when fully extended and the latch lever is released.

Extending or retracting the bed Fig.1-4 Extending or Retracting the bed. Mattress Deck Extension: Hold the foot panel extension sheet and pull out to extend.

To retract the bed and mattress deck extension: Reverse the above procedure

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1.3 (4) Knee break Angle The knee break angle can be manually adjusted whenever the thigh section of the mattress platform is raised. Holding the mattress keeper (6) situated on the foot rest panel at the end of the bed. Lift the panel upwards to lock the foot panel at any angle the catch allows. Release the panel, pull up to its full extension and then lower in a smooth slow action.

6

1.3 (5) Power Operation The bed height, backrest angle, Trendelenberg tilt angle and leg elevation functions are all electrically operated using two control handsets. To operate a function, press and hold the appropriate pushbutton until the desired position is achieved. To stop at the required position release the button. The Auto-contour button operates both backrest and leg elevation simultaneously.

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1.3 (5.1) Control Handsets Patient Handset The patient handset is accessible to either the patient or the nursing attendant. From this handset the patient can control all bed functions except tilt and CPR. The patient handset controls bed functions as illustrated on the next page.

Backrest Angle Leg Elevation

Bed Height

Auto Contour

Nurse Handset The nurse handset, for use by the attendant only, controls bed functions as illustrated below.

Backrest Angle Leg Elevation

Bed Height Trendelenberg Tilt Angle EPP (Emergency Patient Positioning)

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1.3 (5.2) EPP Control Button There is a EPP button on the attendant handset. Press and hold the EPP button to automatically return the bed to a flat, horizontal, low height condition.Before using the EPP button, ensure that all lock out switches on the ACP are in the vertical, unlocked position.

1.3 (5.3) Attendant Control Panel (ACP) Use the APC to prevent unauthorised operation of all handset push button controls. The ACP is located at the foot end of the bed below the mattress platform.

1. Leg Elevation lockout switch 2. Bed Height & Trendelenberg lockout switch 3. Backrest Angle lockout switch 4. Battery Charge indicator LED

In normal operation, all three lockout switches should be in the vertical (unlocked) position as shown above. To disable a bed function, rotate the appropriate switch 90 anticlockwise to the horizontal (locked) position. In this condition the selected push buttons are disabled on both the patient and attendant handsets.

1.3 (5.4) Calibration Error When operating the function buttons, if a bleeping sound is heard and the function is inoperative this indicates an actuator calibration error. Refer to section 7 Calibration.

1.3 (5.5) Batteries The bed is fitted with a back-up battery which allows the electrically-operated functions to be used for short periods while the bed is disconnected from the mains power supply, e.g. when the bed is being moved. Switching between mains and battery power is fully automatic. To ensure that batteries are kept fully charged, the bed must be connected to the mains power supply at all times during normal use. If, when the bed is operated using the batteries, a beeping sound is heard, this indicates a low charge condition. The bed should be re-connected to the mains power supply, for a minimum of 24 hours, in order to recharge the batteries.

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The Battery charge indicator on the ACP illuminates when the batteries are being charged.

1.3 (6) Manually Operated CPR

To lower the backrest (2) in an emergency, lift the red CPR release handle (1) at the side of the bed. Some downward force may be required at maximum elevation, after that the backrest will lower under the patient’s weight.

WARNING The backrest can fall quickly. Keep hands clear to avoid trapping.

CPR Emergency Release Button In addition to the CPR lever, there is also a EPP button on the nurse handset. Press and hold this button to automatically return the bed to a flat, horizontal, low height position.

WARNING

Backrest contact points are identified by this symbol. Care should be taken to keep hands and fingers away from these areas while operating.

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Pro-Contour The Pro-contour retracting and raising backrest system provides additional comfort for the patient by allowing the mattress to expand. When operating the backrest or auto-contour handset buttons, the base of the backrest slides progressively towards the head end of the bed and at the same time, the complete backrest rises away from the mattress platform.

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OPERATIONAL MAINTENANCE 2 .1

General

The equipment has been designed to be virtually maintenance free between service intervals. The periodic cleaning and maintenance necessary will be determined by use and condition. Examine the bed for obvious signs of damage. If found take appropriate remedial action.

2.2

Cleaning

WARNING Disconnect the bed from the mains power supply before cleaning. Gloves and protective clothing should always be worn when carrying out cleaning procedures. These instructions also apply to accessories but not to mattresses. Wipe all surfaces with a soft cloth moistened with hot water and mild detergent (or the hospital’s recommended cleaning solution). Take extra care with areas that may harbour dirt or dust. Rinse with clean water and dry with paper towels. To remove potentially infectious material such as body fluids, or when the bed has been used by someone with a known infection, clean afterwards with NaDCC (e.g. Presept, Actichlor) at 10,000 ppm of available chlorine. Rinse and dry. Allow the cleaned parts to dry before replacing the mattress.

Caution Do not use abrasive compounds or pads. Do not use hypo carbonate or phenolic cleaning solutions.

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PREVENTATIVE MAINTENANCE 3.1 General The following preventive maintenance checks and procedures should be carried out every 6 months. If the result of any check is unsatisfactory, take the appropriate remedial action.

WARNING Before commencing any maintenance activity, disconnect the bed from the electrical power supply. Avoid skin contact with lubricants. Gloves and protective clothing should be worn when carrying out maintenance work. Examine the bed for obvious signs of damage. Make sure that all nuts, bolts and other fastenings are secure and not missing. Examine the flexible cable for cuts, abrasions, kinking or other deterioration. Check the power connector plug for damage. If the power connector plug or cable is damaged, they must be replaced as a complete assembly.

3.2

Release Cables

After long use, the CPR release cable may stretch. This could prevent proper operation of the CPR release. To remedy this, adjust the two lock nuts on the outer cable at the release lever end.

3.3

Castors, Brakes and Steering

Check the brakes for efficient operation. Apply the brakes and push the bed. If any of the three braking castors rotate, the brake is not fully effective. Set the brake pedal in the steering position and verify that one head end castor is engaged so that it cannot swivel. Brakes that fail to lock effectively indicate that the castor requires adjusting or replacement. Refer to Section 6. Sub-section 6.6 and 6.7.

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3.4

Batteries

If, when the bed is operated using the batteries a bleeping sound is heard, this indicates a low charge condition. The bed should be re-connected to the mains power supply, for a minimum of 24 hours, in order to recharge the batteries. Check the condition of the batteries using the following procedure: 1. Ensure that the bed has been connected to the mains power supply for 24 hours. 2. Disconnect the bed from the mains power supply. 3. Apply a load of 80kg to the mattress platform.

4. Raise and lower the mattress platform, from minimum to maximum height, three times. 5. If the bed does not operate satisfactorily in step 4, perform steps 1 to 4 again. If the bed again fails to operate satisfactorily, the batteries are not holding sufficient charge and they should be replaced. Refer to Section 6.9.

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TESTING 4.1 General The following serviceability tests should be performed before returning the bed to use after service, or if any function is suspect. These instructions should be read in conjunction with Section 1, Sub-section 1.3. If the result of any test is unsatisfactory, investigate and take the appropriate remedial action. Refer to Section 5, Troubleshooting and Section 6, Servicing Instructions. Note: All references to left or right of the bed are when viewed from the foot end.

WARNING If any electrical assembly or wiring has been replaced or repaired, the appropriate electrical safety checks must be made. Keep clear of the bed when it is being operated. Severe injury can result from crushing by moving parts.

4.2

Preliminary a ) Verify that no furniture or other obstruction can impede the movements of the bed. b) Connect the bed to the mains power supply. c) Verify that the battery charge indicator (on the attendant control panel) is illuminated. d) Verify that the rotary switches on the ACP are in the vertical (unlocked) position. e ) Level the mattress platform (zero tilt).

4.2

Power Operated Functions

a ) Using the patient handset, check the function of bed height, backrest angle and leg elevation. Verify satisfactorily operation over the full range of movement as specified in Section 8, Technical Data. Verify that the actuators are de-energized when the push button is released or the limit of travel is reached. b) Repeat step a) using the attendant handset. Verify that the lock out switches on the ACP disable the push buttons on both the patient and attendant handsets.

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c ) Check the function of the tilt control using the attendant handset. Verify satisfactory operation over the full range of movement as specified in Section 8, Technical Data. Check that, on reaching the horizontal condition, the mechanism will pause for two seconds then continue if the push button is still being pressed. d) Position the bed at near maximum height with both backrest and legs raised and apply foot down tilt. Press and hold the CPR button on the attendant handset Verify that the bed reverts to flat, horizontal, low height condition.

4.3

Battery Operation a ) Disconnect the bed from the mains power supply. b) Check the functions of bed height, backrest angle, leg elevation and twoway tilt using the attendant handset. Verify that the patient handset is inoperative. c ) Re-connect the bed to the mains power supply. Verify that the battery charge indicator on the ACP is illuminated. d) Test the batteries as described in sub-section 3.4.

4.4

Manual Functions 4.4 (1) Brakes and Steering a) Refer to para. 1.3 (1) Check the brakes for efficient operation. Apply the brakes and push the bed. None of the three braking castors should rotate. b) Set the brake pedal in the steering position and verify that one head end castor is engaged so that it cannot swivel.

4.4 (2) Side Rails a) Refer to para. 1.3 (2). Check operation of the side rails (if fitted). Verify that the release button is effective and the sides are firmly locked when raised.

4.4 (3)

Backrest CPR Release

a ) Using any push button handset, raise the backrest to approximately 60° b ) Refer to para. 1.3 (6) Lift the release handle and push the backrest down. Verify that the release mechanism is effective and the backrest reclines in a smooth, controlled manner with minimum force applied.

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4.4 (4) Knee break a ) Using any push button control panel, raise the legs to maximum height, b) Refer to para. 1.3(4) Verify that the foot end of the calf section can be raised and lowered over the full range of movement as specified in Section 8. c) Lift the foot end to an intermediate position and check that the rastamat is firmly locked. Lower the foot end again. d) Using push button controls, lower the legs. Check that the knee break angle returns to zero as the legs are lowered to horizontal.

4.4 (5) Bed Extension a) Refer to para. 1.3 (3) Check the operation of the bed extension. Verify that the latching mechanism is effective.

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TROUBLESHOOTING

The following table identifies some fault symptoms, their possible cause and suggested remedial action. Test step 4.2

Symptom None of the actuators will work

Possible cause

Action

Power disconnected or Batteries discharged

Make sure power supply Lead is connected

Fuse Blown

Check fuse in adaptor

4.2

One actuator does not work

Actuator plug disconnected

Check that actuator plug is fully inserted in the control box

4.3

Battery charge indicator not illuminated

Power disconnected or fuse blown

Check and rectify

ACP disconnected

Check that plugs are fully inserted in the control box (see note 2)

Battery charger fault

Check by substitution of control box

Wear or damage

Adjust or replace castor Check and re-adjust

4.5 (1) 4.5 (3)

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Brakes or steering lock not effective Backrest CPR release not effective

Release mechanism not correctly adjusted

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SERVICING INSTRUCTIONS WARNING Before starting any service or maintenance procedures, ensure that the equipment has been adequately decontaminated. Avoid skin contact with lubricants. Rubber gloves and protective clothing should be worn when carrying out maintenance work. Heavy equipment hazard. The bed and its sub-assemblies are very Heavy and could cause serious injury or death by crushing. When working beneath the platform, the equipment must be properly supported with suitable lifting devices, blocks or stands.

6.1

General

The servicing procedures given in this section include instructions for:

 Replacement of specific components and sub-assemblies  Dismantling and assembly of the main structure  Restoration of paint finish Procedures which are considered to be self evident have not been included. Do not disassemble more than is necessary to replace a defective item. Remove old Loctite and other adhesives from components before reassembly. Apply Loctite 270 to screw threads on assembly of items as specified in Appendix A or in the text. Before applying Loctite, clean and degrease both internal and external screw threads using a suitable volatile solvent e.g. methylated spirits. Apply grease to bushes and joints on assembly of items as specified in Appendix A or in the text. All references to left or right of the bed are when viewed from the foot end. Always refer to the appropriate diagram in the Assembly Spares Manual, Appendix A to identify component Part Numbers. Before the bed is returned to use following service or repair:

 Carry out a visual inspection for signs of damage  Perform a serviceability test as given in Section 4  Clean the equipment using the method described in Section 2

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6.2

Product Assembly Structure

Each bed comprises a number of modules or sub-assemblies as detailed in the Assembly Spares Manual - Appendix A. The Serial number of the bed is marked on a label which is visible on the Foot end rail of the bed. The date of manufacture is also printed on this label.

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