Harmar Mobility AL600 Installation And Owner's Manual page 30

Troubleshooting
PROBLEM
Lift does not operate or lift operates slowly or
intermittently
CAUSE
Bad electrical connection(s) / Circuit breaker
SOLUTION
Check / clean all connections that might be
loose or dirty. This is the #1 cause of a poorly
performing lift. The lifting motor requires
quality electrical connections to operate
at full capacity; any break in the wiring will
slow down the motor and it will deteriorate
prematurely.
Inspect the full length of the wire harness
to ensure the insulation is not torn. The lift's
vehicle power harness running through or
under the vehicle is subject to road debris and
rubbing against the vehicle's frame which can
cause a short.
Verify the circuit breaker. The circuit breaker is
located about 6" from the connections to the
vehicle's battery. The breaker will self-reset if
overloaded; however, verify (with Ohm meter
or test light) that the breaker is functioning.
Or replace it with a new/known-good circuit
breaker and perform the following tests.
30
SECTION 2 : INSTALLER
20 A
SELF
RESETTING
CIRCUIT
BREAKER
APPLY KNOWN GOOD POWER
DIRECT TO MOTOR
R Y
B A T T E
S H O P
MOTOR
Y
B A T T ER
SH O P
W IR IN
NO
INSPECT /
MOTOR
REPLACE
RED
LIFT WIRING RED
W IR IN
INSPECT or
NO
REPLACE MOTOR
VEHICLE
HARNESS
© 2014 Harmar Mobility, LLC • All Rights Reserved
DID
NO
REPLACE
RUN
MOTOR
?
YES
APPLY KNOWN GOOD
POWER DIRECT
TO PLUG ON LIFT
L IF T
G IN
OPERATE HAND
CONTROLLER
DID
RUN
?
YES
APPLY KNOWN GOOD
Y
BA TT ER
SH O P
POWER DIRECT
THRU VEHICLE HARNESS
L IF T
G IN
OPERATE HAND
CONTROLLER
DID
YES REPLACE
VEHICLE
RUN
BATTERY
?