BASELINE Lift BL412 - Manual (Page 21)

21
7. TROUBLESHOOTING
The following are suggestions to consider if you have problems with the lift. Please call a
qualified lift technician and/or a qualified electrician for further clarification and information.
Problem Possible Causes Solution
Lift Will Not Raise
or Lower
1. Blown fuse or circuit breaker
2. Incorrect voltage to motor
3. Bad wiring connections
4. "UP" switch burned out
5. Motor windings burned out
1. Replace fuse or reset/replace circuit breaker
2. Supply correct voltage to motor
3. Repair and insulate all connections
4. Replace switch
5. Replace motor
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 or 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. Mechanical locks are engaged
2. Obstruction under lift or in glide
block tracks
1. Raise unit slightly and disengage mechanical locks
2. Carefully remove obstruction - clean glide block
tracks
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 Will Not Raise
A Vehicle
1. Low hydraulic fluid
2. Malfunction of pressure relief
valve
3. Insufficient electrical voltage
4. Lift overload
5. Motor is running backwards
6. Air in hydraulic oil
7. Pump will not prime
8. Pump is damaged
9. Faulty lowering valve
1. Lower lift. Using ISO grade 32 hydraulic oil, fill
the powerpack reservoir to 1" below the top
2. Clean pressure relief valve. if problem continues,
call a service technician
3. Confirm a 208/230 volt power supply to the lift
4. Check that vehicle weight is evenly distributed and
does not exceed rated capacity.
5. Confirm proper motor rotation - rewire if required
6. Check oil seal and bleed hydraulic system
7. Check hydraulic oil level and pick-up tube.
Replace pump if required
8. Repair or replace pump
9. Clean or replace valve