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7 TROUBLESHOOTING
The following chart is intended to assist with troubleshooting the platform
hoist. While not all inclusive, the chart outlines
the most common causes of a problem and the recommended course of action.
SYMPTOM CAUSE AND CORRECTIVE ACTION
Hoist won’t lift load or is lifting it very slowly
No oil in engine to build compression—must add oil. Refer to
PRO Drive m
anual for further information.
Hoist attempting to lift more than stated capacity of unit—check
capacity rating and reduce load weight as needed
Brake is dragging which may cause a “squealing” noise.
Platform not moving freely—check for track obstructions or
block and wire rope malfunctions
Engine related problems—refer to PRO Drive manual. Reference
to manufacturer’s instruction manual may also be necessary.
On electric motors, extension cord too long, which can cause
reduced voltage input—shorter cord or heavier gauge wire must
be used
Engine speed too slow—increase throttling.
Too much wire rope on drum—hoisting capacity decreases as
wire rope diameter increases.
Platform will not lower.
Platform has been allowed to jam against the spring stops on the
top bracket causing the drive belt to
jam in the drum sheave—
shut off the gas engine or electric motor. Then release the
jammed belt by inserting a screwdriver between the belt and the
sheave groove.
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