Invacare BAR750 User Manual - Page 31

Troubleshooting: Mechanical

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SYMPTOM One actuator does not work. PROBABLE CAUSE Bad control module. Bad handset. Bad actuator motor. Actuator does not function properly, or does not function at all. Bed is not grounded. Defective wiring. Defective actuator motor. Unit is not grounded between power cord and frame or between power cord and wall receptacle. Troubleshooting SOLUTION ISOLATE THE PROBLEM: Interchange connections on control module so that problem actuator is plugged into an actuator connection on the control module that is working satisfactorily. If problem actuator now operates "OK", but actuator that was operating "OK" now has a problem, either the control module or handset is faulty. Replace as required. Check wiring between control and actuator. Reverse wires. Replace actuator. Check ground (GREEN) wire between frame and power cord. 7.2 Troubleshooting: Mechanical SYMPTOM PROBABLE CAUSE Bed does not stay in place. Locking casters not locked. Pressing function on Pendant results in motion Motor cable connections to junction box other than that intended. incorrect. SOLUTIONS Lock casters. Refer to Steering the Bed. Verify connections. Refer to Set-Up. 1143215-B-01 31

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Troubleshooting
SYMPTOM
PROBABLE CAUSE
SOLUTION
Bad control module.
Bad handset.
One actuator does not work.
Bad actuator motor.
ISOLATE THE PROBLEM:
Interchange connections on control module
so that problem actuator is plugged into an
actuator connection on the control module
that is working satisfactorily. If problem
actuator now operates “OK”, but actuator
that was operating “OK” now has a problem,
either the control module or handset is faulty.
Replace as required.
Defective wiring.
Check wiring between control and actuator.
Reverse wires.
Actuator does not function properly, or does
not function at all.
Defective actuator motor.
Replace actuator.
Bed is not grounded.
Unit is not grounded between power cord
and frame or between power cord and wall
receptacle.
Check ground (GREEN) wire between frame
and power cord.
7.2
Troubleshooting: Mechanical
SYMPTOM
PROBABLE CAUSE
SOLUTIONS
Bed does not stay in place.
Locking casters not locked.
Lock casters. Refer to Steering the Bed.
Pressing function on Pendant results in motion
other than that intended.
Motor cable connections to junction box
incorrect.
Verify connections. Refer to Set-Up.
1143215-B-01
31