110
Friction Clutch with Mechanical Brake
• Do not adjust/disassemble the Friction Clutch with Mechanical Brake.
Adjusting or disassembling the Friction Clutch with Mechanical Brake may result in death or serious injury.
Prohibited
DANGER
Symptom Cause Remedy Main factor Countermeasure
Unable to lift a load. Clutch is activated
(normal)
Lighten the load less than the rated load
and use the electric chain hoist.
Over load Use the electric chain
hoist with a load less
than the rated load.
Abrasion of Clutch
Disk
Replace the Friction Clutch with
Mechanical Brake.
Too many use of the
Friction Clutch
Avoid the over load.
Use of oil other than
the designated oil
Use KITO genuine oil.
Secular change
in mechanical
characteristics of
the Friction Clutch
with Mechanical
Brake
Leaving the electric
chain hoist for a long
time without use
Do not use the body
size exceeding the
service limit.
Temperature rise
inside the gear box
Resume the operation after cool down.
When it is still unable to lift a load,
replace the Friction Clutch with
Mechanical Brake.
Use in a hot
environment, or
excessively frequent
use
Avoid the use in a
hot environment or
excessively frequent
use.
Unable to lift a load,
or the load lowers
after stop.
Deteriorated
braking
performance
Replace the Friction Clutch with
Mechanical Brake.
Use of oil other than
the designated oil
Use KITO genuine oil.
Abrasion of the
Brake Pad
Approaching service
life limit
Do not use the body
size exceeding the
service limit.
Electric chain hoist
of VFD specification
became tripped
frequently at
lowering a load.
Abrasion of the
Brake Pad
When the electric chain hoist trips
frequently, replace the Friction Brake with
Mechanical Brake with a new one.
Approaching service
life limit
Check the Mechanical
Brake if the tripping
time increased. (See
P81)
Troubleshooting (continued)
• Use KITO genuine gear oil.
(The gear oil for Friction
Clutch with Mechanical
Brake is different from the
standard specification oil.)
Use of the oil other than KITO
genuine oil may result in death or
serious injury due to the drop of
a lifted load.
DANGER
Mandatory
Chapter 3 Troubleshooting
3
Friction Clutch with Mechanical Brake Troubleshooting
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