Direct Lift PP8 Plus Long - Manual (Page 16)

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• Check all cable sheaves/assembly for free movement or excessive wear on cable sheave shaft.
Yearly Maintenance
• Lubricate the cable sheave shaft by using grease gun at lease once a year after the lift is in service.
• Check for excessive wear of cable. Replace them if necessary.
• Change the hydraulic fluid - good maintenance procedure makes it mandatory to keep hydraulic fluid
clean. No hard fast rules can be established; - operating temperature, type of service, contamination lev
els, filtration, and chemical composition of fluid should be considered. If operating in dusty environment
shorter interval may be required.
Special Maintenance Tasks
NOTE: The following items should only be performed by a trained maintenance expert:
• Replacement of hydraulic hoses.
• Replacement of cables and sheaves.
• Replacement or rebuilding air and hydraulic cylinders as required.
• Replacement or rebuilding pumps / motors as required.
• Checking of hydraulic cylinder rod and rod end (threads) for deformation or damage.
CAUTION!!
Relocating or changing components may cause problems. Each component in the system must be compatible;
an undersized or restricted line will cause a drop in pressure. All valve, pump, and hose connections should be
sealed and/or capped until just prior to use. Air hoses can be used to clean fittings and other components. How-
ever, the air supply must be filtered and dry to prevent contamination. Most important is cleanliness; Contamina-
tion is the most frequent cause of malfunction or failure of hydraulic equipment.
TROUBLESHOOTING
The common problems that may be encountered and their probable causes are covered in the following para-
graphs:
• 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” clear
ance.