Invacare Apollo Maintenance And Parts Manual page 48

Apollo
Troubleshooting Guide
The following is a check list to assist with diagnosing an electrical fault on a wheelchair. If after consulting the
check list the problem persists then an authorised service agent should be contacted.
PROBLEM
0. The On status indicator/Bat-
tery Gauge does not light
when the controller is
switched on
1. Low battery voltage fault
2. High battery voltage fault
3. Left motor (or connection
fault)
4. Right motor (or connection
fault)
Page 2.38
CHECK/ACTION
1. Check the battery connector to the controller is securely plugged into
the connector from the battery.
2. Check the batteries themselves are connected correctly. i.e. check
the battery terminals.
3. Check the batteries are not measuring less than 15V, using a volt-
meter.
4. Check the battery supply fuse or circuit breaker. If the fuse has
blown check for wiring faults.
1. Check the battery connector to the controller is securely plugged into
the connector from the battery and is in a good condition (free from
corrosion).
2. Check that the battery terminals are tight and in good condition.
3. Check the batteries are not at the end of their life.
4. Check the batteries are not measuring less than 15V, using a volt-
meter.
1. Check the battery charger. Is it overcharging the batteries? Is the
charger the correct type? Battery voltage should not be greater than
32V with battery removed from charger.
1. Check the left and right motor/solenoid brake connectors are
securely plugged in.
2. Check the contacts in the left and right motor connectors for corro-
sion or damage.
3. Check the left and right motors. If the resistance is more than 1 Ohm
or less than 100 milliohms the motor is probably faulty.
4. Check the resistance of the motor to its housing. If the resistance is
less than 1 Megaohms the motor is probably faulty.
N.B. Due to limitations of the diagnostics a fault in one motor may be
indicated as a fault in the other motor.
5. Disconnect both motors (and park brakes). Turn the controller off
and on leaving the joystick in neutral. If a motor fault is still indicated
then the fault is actually with the controller.
N.B. Due to limitations of the diagnostics a fault in the controller output
electronics may be indicated as a motor fault.
As above.
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