Invacare TDXSPBASE Service Manual page 28

SECTION 3—SAFETY INSPECTION/TROUBLESHOOTING
SYMPTOM
Wheelchair veers to the left or right when
driving on level surface.
E09/E10 error code will not go away.
Gearbox is leaking Fluid.
Excessive clicking
coming from motor/gearbox.
Gearbox shaft movement or bent shaft.
Motor Stutters.
Motor Fails to start after initial
installation.
Motor is running then fails to restart when
stopped.
Motor runs but loses power.
TDX® SP
PROBABLE CAUSE
Uneven tire pressure.
Motors out of balance.
Bad motor connection.
Bad brake coil.
Bad seal around drive shaft
Loose hardware.
Bad bearing in motor or gearbox.
Loose wheel hardware.
Rough driving.
Poor connection or worn brushes.
Battery voltage is too low.
Bad Connection.
Brake Disengaged.
Heavy load on the motors forcing
controller into the current rollback
mode.
Blown fuse in battery wiring
harness.
Damaged Motor.
Controller power stage board or
relays may be damaged.
Controller senses heavy load and
has entered the current rollback
mode.
28
SOLUTIONS
Inflate tires. Replace tires if worn. Use
programmer to balance motors.
Check all connections. Ohm out each brake
coil. Normal reading is 48-80 Ohms.
Swap out motor leads. Using a programmer,
check for error codes.
NOTE: WHEELCHAIRS WITH G-TRAC
ONLY - Before swapping motor leads for
troubleshooting purposes, use the
programmer to turn off G-trac in all drives.
If seal is bad, replace gearbox. Remove
motor brushes and inspect for grease
contamination. Replace motor if
contamination is found.
If loose hardware is found retighten
hardware.
Replace motor or gearbox.
Tighten hardware, (use removable
Loctite®on hardware). Follow torque
settings in this manual.
Replace gearbox.
Check motor connectors. Check brushes
and replace if necessary.
Check batteries and recharge if necessary.
Check connector.
Engage brake.
Leave power On and allow controller to
count down, and recharge the wheelchair
overnight with power On.
Replace battery wiring harness.
Replace brushes if necessary, or replace
motor if internal damage is determined.
Ohm out motor to check for possible
internal damage (worn out brushes may be
possible).
Replace controller or send to Invacare for
repair.
Stop driving and let electronics cool.
Check battery level when driving with a
multimeter.
Calibrate joystick throw.
Part No 1143209