Harrington NTH, Руководство по эксплуатации

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Disassemble
and remove excess oilwith cloth-then reassemble.
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NOTE: CF2 brake friction plates require small amount of oil. Model CF4 brake friction plates
ARE DRYand DO NOT require small amount of oil.
4. Trouble: Brake does not hold load chain while lowering.
Cause
Explanation of Cause
When reassembled, brake surfaces were not
throughly cleaned to remove dust.
Foreign matter entered
the brake assembly.
Brake surfaces are oiled
excessively.
It also results from applying excessive grease or
machine oil on brake surfaces.
2, 3, 5 ton
This trouble particularly OCCHrswhen it is used for
transverse pull or it sometimes occurs with no load.
This is a result of the chain being twisted at
reassembly .
Remedy';' Pay attention to load chain during operation.
Before loading, be sure to untwist load chain completely.
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Upon noticing of twisted chain, be sure to stop operation immediately, then
disassemble and reassemble after untwisting.
5. Trouble: There is no broken link nor other trouble in chain in particular, but:
Hook opened unusually.
Cause
Pin is bent, pin hole deformed, or other indication of overload.
Exglanation of Cause
Excessive overloading
due to sudden shock.
Due to sudden shock during operation.
In double-hoisting operation a chain hoist of
improper capacity was selected.
.
- /
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Overloading or shock
. due to double-hoisting
operation.
Remedy;
In double-hoisting operation, chain hoists are.
subjected to sudden shock due to abrupt operation
of one hoist or for any other reason.
Pay attention to load chain during operation.
Sufficient care should be excercised in selecting capacity of a chain
hoist (determination of liftingcapacity) for operation subject to shock or
for double-hoisting operation.
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