— 27 —
Situation Condition
Cause
Remedy
Brake
slippage.
･
Braking distance is too long,
even under no load conditions.
･
Motor has become
demagnetized, owing to
too frequent use.
･
Replace with a normal
one.
･
Improper contact of
electromagnetic
contactors.
･
Deteriorated resistor for
dynamic braking.
･
The load cannot be held at the
level when stopping operation.
･
Improper gear oil use.
･
Replace the specified gear
oil.
･
Within rated load, lifting/
lowering speed is slow.
･
Deterioration of clutch
brake.
･
Replace the set of
mechanical brake with
friction clutch.
Oil leakage.
･
Oil leakage from case joint and
chain guide.
･
Defective gear case
packing/oil seal.
･
Replace with a normal
one.
･
Loosened assembly bolts.
･
Fasten with normal
torque.
･
Leakage from oil plug.
･
Loosened oil plug.
･
Fasten oil plug.
A clicking
sound is
heard from
the load chain
during lifting.
----------
･
Wear of load sheave.
･
Replace with a normal
one.
･
Wear of load chain.
･
Rust on load chain.
Electric
shock.
----------
･
Accumulation of
moisture/foreign matter
on electrical instruments.
･
Remove moisture/foreign
matter.
･
Improper grounding.
･
Secure correct grounding.
Ask your local Kito dealer to repair.
For maintenance, a fuse shown in the table is attached in the
controller cover (the capacity/ name plate side) as a spare.
Fuses for maintenance
WLL (kg)
Speed type
Fuse rating
(A)
Nos.
per
hoist
60, 100, 180
Single 5 2
Dual
5 2
0.1 1
160, 240,
480
Single 10 2
Dual
10 2
0.1 1
