Trouble Shooting 42
PV-12P
Trouble Shooting
TROUBLE CAUSE REMEDY
Motor
does not
run
1. Button does not work
2. Wiring connections are not in good
condition
3. Motor burned out
4. Height limit switch is damaged
5. AC contactor burned out
1. Replace button
2.Repair all wiring
connections
3. Repair or replace motor
4.Replace the limit switch
5. Replace AC contactor
Motor
runs but
the lift is
not raised
1. Motor runs in reverse rotation
2. Gear pump out of operation
3. Release valve in damage
4. Relief valve or check valve in damage
5. Low oil level
1.Reverse the two power
wires
2.Repair or replace
3. Repair or replace
4.Repair or replace
5.Fill tank
Lift does
not stay
up
1. Release valve has debris in it
2. Relief valve or check valve leakage
3. Cylinder or fi ttings leak
Repair or replace
Lift raises
slowly
1. Oil line is has an obstruction
2. Motor running on low voltage
3. Oil mixed with air
4. Gear pump leaks
5. Overload lifting
1. Clean the oil line
2. Check electrical system
3. Fill tank
4. Replace pump
5. Check load
Lift can
not lower
1. Safety lock device are activated
2. Release valve has debris in it
3. Safety cable broken
4. Oil system has an obstruction
1. Release the safeties
2. Repair or replace
3. Replace
4. Clean the oil system
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