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times between cleanings. When lubricating the chain, apply sufficient lubricant to obtain natural run-
off and full coverage, especially in the interlink area.
Gearbox
For ambient temperature of approximately 50
℉
to 122
℉
,
a gear oil of Mm
²
/S at 104
℉
, with mild
high-pressure additives should be used. IDEMITSU racing gear 140 GL-5 is the oil that should be
used.
Maintenance
Maintenance Interval
Maintenance Point
Daily before operating
•
Check the control cables, the strain relief elements, the operation of
the slipping clutch (if fitted), the control pendant housing for damage,
and the electrical switch gear and wiring.
•
Be sure there is a tight fit for the bolts on the load hook assembly.
•
Check the ends of the chain and the chain bag to ensure they are
secure.
•
Check the oil level and change the oil before each session (if
needed).
After the first 50-200
operating hours
•
Check the suspension eye and the suspension hook assembly.
•
Check the fittings for the bolts on the load hook assembly.
•
Check the hooks for cracks, deformation, pitting and wear, and
secure connections.
•
Check the brakes, brake stroke, brake disc, and adjust them as
required.
•
Lubricate chain, under normal and heavy usage and lubricate chain
sprocket bearing and check the bolts for secure fits.
Troubleshooting
Failure
Possible Cause
Corrective Action
Hoist will not
operate
Loss of power
Check circuit breakers, switches, fuses, and
connections on power cable.
Wrong voltage or frequency
Check voltage and frequency of power supply
against the rating on the nameplate of the motor.
Hoist over load
Reduce load to within rated capacity of hoist.
Improper, loose, or broken wire in the
hoist electrical system
Shut off power supply, check wiring connections
on hoist control panel, and inside push button
pendant.
Brush wear
Inspect both motor brushes and replace if
necessary.
Fuses burned out
Replace fuses.
Motor burned out
Replace motor frame/stator, shaft/rotor, and any
other damaged parts.
Hoist lifts but will
Faulty switch in pendant
Check electrical continuity. Check electrical
Summary of Contents for 72642
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