Direct Lift PP8S - Manual (Page 18)

18
TROUBLESHOOTING
The common problems that may be encountered and their probable causes are covered in the following
paragraphs:
• Motor Does Not Operate
Failure of the motor to operate is normally caused by one of the following:
1. Breaker or fuse blown.
2. Faulty wiring connections; call electrician.
3. Defective up button; call electrician for service.
• Motor Functions but Lift Will Not Rise
If the motor is functioning, but the lift will not rise do the following in the order given:
1. A piece of trash is under check valve. Push handle down and push the up button at the same time. Hold
for 10-15 seconds. This should flush the system.
2. Check the clearance between the plunger valve of the lowering handle. There should be 1/16”
clearance.
3. Remove the check valve cover and clean ball and seat.
WARNING!
Failure to properly relieve pressure in the following step can cause injury to personnel. This lift uses
ISO Grade 32 or other good grade non-detergent hydraulic oil at a high hydraulic pressure. Be familiar
with its toxicological properties, precautionary measures to take, and first aid measures as stated in the
Safety Summary before performing any maintenance with the hydraulic system.
4. Oil level too low. Oil level should be just under the vent cap port when the lift is down. Relieve all
hydraulic pressure and add oil as required.
• Oil Blows out Breather of Power Unit
If oil blows out of the breather of the power unit, take the following actions:
1. Oil reservoir overfilled. Relieve all pressure and siphon out hydraulic fluid until at a proper level.
2. Lift lowered too quickly while under a heavy load. Lower the lift slowly under heavy loads.