14
LIFT PROBLEM TROUBLESHOOTING GUIDE
The following are suggestions to consider if you have problems with the lift. Please call a
Trained Lift Service Person and/or qualified electrician for further clarification and
information.
Problem
Cause
Solution
Lift Will Not
Raise or
Lower
1. Blown fuse or circuit breaker
2. "Emergency Stop" button engaged
3. Tripped thermal overload
4. Incorrect voltage to motor
5. Bad wiring connections
6. "UP" switch burned out
7. Motor windings burned out
8. Side to side synchronization has
exceeded maximum limits
1. Replace fuse or reset/replace circuit breaker
2. Release button or replace
3. Reset thermal overload
4. Supply correct voltage to motor
5. Repair and insulate all connections
6. Replace switch
7. Replace motor
8. Call a Trained Lift Service Person for assistance
Lift Will Not
Raise
1. Air in oil or low oil level
2. Lowering Valve leaks
3. Motor runs backward
4. Pump damaged
5. Pump will not prime
6. Relief Valve leaks
7. Voltage to motor incorrect
8. Lift overloaded
1. Check fluid level, oil seal, bleed system
2. Clean valve or replace
3. Check for correct wiring
4. Repair of replace pump
5. Check fluid level and pick-up tube - replace pump
6. Clean Relief Valve (replace if necessary)
7. Supply correct voltage to motor
8. Verify that loaded vehicle weight does not
exceed rated lift capacity
Lift Will Not
Lower
1. Faulty lowering solenoid valve
2. Obstruction under lift or in roller
tracks
1. Replace valve
2. Carefully remove obstruction
Lift Will Not
Hold
Pressure
1. Contamination in system
2. Internal Cylinder leaks
3. Lowering Valve leaks
4. Check Valve leaks
5. External leaks
1. Check oil level - bleed cylinders - remove
contamination - replace oil seal
2. Check fitting, replace cylinder
3. Contaminated fluid, handle binds, clean valves
4. Clean check valve (replace if necessary)
5. Check all fittings and repair leaks
Lift Going
Up Out of
Level
1. Lift installed on un-level floor
2. Linear Transducer Cables at the lift
have changed position relative to
one another
1. Reinstall on level surface
2. Adjust (rotate) one cable to match the position of
the opposite cable. Call a Trained Lift Service
Person if problem persists
Anchors Will
Not Stay
Tight
1. Holes drilled oversize
2. Concrete floor thickness or holding
strength not sufficient
1. Relocate lift using the correct bit to drill holes
2. Break out old concrete and re-pour new
foundation per lift installation instruction
Locking
Mechanisms
Do Not
Engage /
Disengage
1. Safeties are binding
2. Faulty air cylinder
3. Damaged air line
4. Safety locks do not latch properly
5. Safety locks do not disengage
1. Lubricate mechanism
2. Replace air cylinder
3. Repair/replace air line
4. Adjust mechanisms per lift installation instructions
5. Check air supply and air cylinder – replace if
required. Reset electronic circuit by pressing
"Emergency Stop Button" for 15 seconds and then
release it. Call a Trained Lift Service Person
