14
VII. TROUBLE SHOOTING
Trouble
CAUSE
REMEDY
1
Motor does not run
Button does not work Replace button
Wiring connections are not in
good condition or
disconnection
Repair all wiring connection
Motor burned out Repair or replace motor
AC Contactor in damage Replace AC contactor
2
Motor runs but the
lift is not raised
Motor runs in reverse rotation Reverse two power wire
Release valve in damage Repair or replace
The Gear Pump in damage Repair or replace
Relief valve Valve or check
valve in damage
Repair or replace
Low oil level Fill tank
Overload or system low
preasure
Turn up the preasure of hydraulic
system
3
Raising but falling
down automatic
Release valve in damage Repair or replace
Relief valve Valve or check
valve in damage
Repair or replace
Cylinder or connection leaking
Replace cylinder oil seal or
connection
4
Raising slowly
Oil line jam Clean oil line
Insufficient power supply Check circuit
Air in hydraulic oil Fill tank
The Gear Pump leaking Replace Gear Pump
overload Check the car weight
5
Lift can not lower
safety lock close Operate again
Release valve in damage Replace relif valve
Oil line system jam Clean oil line
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