Presto Lifts
P4 Manual
13
6.1 Periodic Maintenance
Before each use
• Inspect the machine for excessive wear or damage.
• Verify all precautionary labeling is legible.
• Verify the photo eye across the load opening is functioning correctly by placing an object in
the path of the light and attempting to raise and lower the platform. The platform must not
raise or lower if the photo eye is obstructed.
See Operation Section.
6.1.1. Monthly
• Inspect the rollers and roller tracks, cylinder sheave, and chain.
See Hydraulic Power Unit
and Components sections.
• Inspect mast, out-riggers, and other structure components for damage, broken welds, etc.
•
Inspect all hydraulic fittings and connections for leaks or damage.
•
Inspect the hydraulic cylinder. Excessive fluid in the vent line may indicate leaking seals
within the cylinder.
•
Inspect the hydraulic fluid. Fluid level should be approximately 3/4 of an inch from the top of
the reservoir when the platform is lowered. Fluid should be clear and free of debris. Fill tank
only when platform is lowered.
• Check, operator push button or foot switch for proper operation. Inspect all wiring for secure
connections and sound wiring, including grounds and electrical components.
6.1.2. Annually
• Perform Monthly inspections.
•
Change the hydraulic fluid and clean the suction strainer.
See Replacing Hydraulic Fluid
Section.