14
VIII.TROUBLE SHOOTING
NO
TROUBLE
CAUSE
REMEDY
1
Motor does not run
1. Button does not work
1. Replace button
2. Wiring connections are not
in good condition
2. Repair all wiring connections
3. Motor burned out
3. Repair or replace motor
4. AC contactor burned out
4. Replace AC Contactor
2
Motor runs but the lift
is not raised
1. Motor runs in reverse
rotation
1.Reverse two power wire
2. Release Valve in damage
2. Repair or replace
3. Gear Pump out of operation 3. Repair or replace
4. Relief Valve or Check Valve
in damage
4. Repair or replace
5. Low oil level
5. Fill tank
6. Overload lifting or low
pressure
6.Check load or adjust the pressure
3
Lift does not stay
up
1. Release Valve out of work
Repair or replace
2. Relief Valve or Check Valve
leakage
Repair or replace
3. Cylinder or Fittings leaks
Replace fitting and oil seal
4
Lift rises slowly
1. Oil line is jammed
1. Clean the oil line
2.Motor
running
on
low
voltage
2. Check Electrical System
3. Oil mixed with air
3. Fill tank
4. Gear Pump leaks
4. Repair or replace
5. Overload lifting
5. Check load
5
Lift cannot lower
1. Safety device are not in
activated
1. Release the safety device
2. Release Valve in damage
2. Repair or replace
3. Oil system is jammed
3. Clean the oil system
