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SECTION 3—SAFETY INSPECTION/TROUBLESHOOTING
Part No. 1125078 23 At’m and At’m QT
Wheelchair will not
drive.
Low tire pressure.
Motor engagement handles are dis-
engaged.
Batteries require charging.
Charger plugged in.
Circuit breaker tripped.
Inflate tires to the proper tire pressure (30 psi).
Engage motor engagement handles.
Charge batteries. Make sure the setting on the
charger is correct.
Unplug charger from wall outlet before operating
the wheelchair.
Press the reset button. Refer to Resetting the Cir-
cuit Breaker on page 54.
Motor chatters or
runs erratically, or
only one motor
turns.
Damaged connector or worn
brushes.
Bad motor.
Ohm out motors. Replace motor if high reading is
present. Normal reading is 0-5 Ohms.Refer to
Electro-Mechanical Parking Brake Test
on
page 29.
Controller malfunction. Check for error codes with programmer. Refer to
electronics manual provided.
Wheelchair veers
to the left or right
when driving on
level surface.
Uneven tire pressure.
Motors out of balance.
Inflate tires.
Replace tires if worn.
Use programmer to balance motors.
E09/E10 error code
will not go away.
Bad motor connection.
Bad brake coil.
Check all connections. Ohm out each brake coil.
Normal reading is 45-50 Ohms. Refer to Elec-
tro-Mechanical Parking Brake Test on page 29.
Excessive clicking
coming from
motor.
Bad bearing in motor. Replace motor.
Loose wheel hardware. Tighten hardware, (use removable Loctite™ on
hardware). Follow torque settings in this manual.
Motor stutters.
Poor connection or worn drive
cylinder.
Check drive cylinders and replace if necessary.
Motor fails to start
after initial installa-
tion.
Battery voltage is too low.
Bad connection.
Check batteries and recharge if necessary.
Check connector.
Only one drive
wheel turns.
One motor is disengaged.
Electrical malfunction.
Engage motor engagement handle.
Replace motor.
Joystick erratic or
does not respond
as desired.
Electrical malfunction.
Controller programmed improperly.
Replace joystick.
Reprogram controller. Refer to electronics man-
ual provided.
Wheelchair does
not respond to
commands.
Poor battery terminal connection. Clean the battery terminal connectors.
SYMPTOM PROBABLE CAUSE SOLUTIONS