WARNING
BEFORE ATTEMPTING TO TEST THE OVERLOAD CLUTCH, MAKE CERTAIN THE FOLLOWING PREREQUISITES ARE STRICTLY OBSERVED:
a.An appointed person must determine, before starting, that all structures supporting the hoist are adequately strong to withstand the test load of 200% of the rated load, plus the weight of the hoist, whether hoist is tested in installed position or moved to a designated test facility.
b.Loads used for testing must be accurately known.
c.Test must be made ONLY by a qualified operator, thoroughly familiar with the hoist and the purpose of the test.
d.Adequate and proper rigging must be provided to ensure that test loads are securely attached, properly balanced, and lifted level. Failure to provide adequate support could cause injury to personnel and/or damage to equipment.
(1)Using a known load, equal to the hoist rated load, energize hoist to lift the load. Raise this load just high enough to be certain hoist is lifting the entire load. Clutch should not slip with the rated load. Lower load to rest position. If clutch slips with rated load, adjustment is required. (See paragraph
(2)Increase load in steps from rated load, TO A MAXIMUM OF 200% of the rated load, attempting to lift load with each increase in weight. Hoist Overload Clutch should slip and refuse to lift load before 200% of the rated load is reached. Should hoist lift 200% of the rated load — STOP TEST — A CLUTCH ADJUSTMENT IS REQUIRED. (See paragraph
“OVERLOAD CLUTCH ADJUSTMENT”.)
(3)Run hoist with load causing clutch to slip (hoist refusing load) five cycles of approximately 1 second each.
CAUTION
To prevent overheating, release the hoist control button at once when the hoist refuses to lift the load.
(4)Remove weights added in step (2) and return to hoist rated load. Lift rated load one final time. Clutch should not slip.
WARNING
Do not lift more than rated load except for test purposes.
NOTICE
ALWAYS KNOW LOAD TO BE LIFTED,
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