Invacare PHOENIX Service Manual page 27

PROBLEM
3. Left Motor (or connection) fault
4. Right Motor (or connection) fault
5. Right Motor (or connection) fault
Phoenix
00/04
CHECK/ACTION
1. Check the left and right motor/park
brake connectors are securely plugged
in
2. Check the contacts in the left and
right motor connectors for corrosion or
damage
3. Check the left and right motors using
a ohmmeter disconnect the motors and
measure the motor resistances at the
motor resistances at the motor
connectors. If the resistance is more
than 1 Ohm or less than 100mili Ohms
the motor is probably faulty. (If the
motor seems OK sometimes and not
others when rotated then the motors
brushes or commutator are is/faulty
4. Check the resistance of the motor to
its housing. Using an ohmmeter
measure the resistances of either motor
contact to the motor housing. If the
resistance is less than 1 MegOhms the
motor is probably faulty. (If the motor
seems OK sometimes and not others
when rotated then the motors brushes
may be touching the housing as the
commutator is rotated)
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 motor fault.
As above
1. Check the motor/park brake
connectors are securely plugged in
2. Check the contacts in the connectors
or damage
3. Check the park brakes. Using an
ohmmeter disconnect each park brake
and measure the resistance at the
connector. If the resistance is less than
20 ohms the park brake is probably
faulty
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