KITO ER2 Serie Manuel Du Propriétaire page 103

Symptom Cause
Electromagnetic
Rusting
Brake does not
operate.
Breakage of rectifier Measure the resistance of the rectifier
Too long (or short) Abrasion of brake
stopping distance lining
(stopping distance
may change slightly
depending on the
temperature.)
Louder operating Abrasion of brake
sounds lining
Remedy
When the Brake is rusted shut, replace
the brake unit as a whole.
with circuit tester.
Anode terminal : Negative probe of the
circuit tester
Cathode terminal : Positive probe of the
circuit tester (measure
the resistance in kΩ
range)
When the resistance is almost zero, the
rectifier is normal.
In other cases, replace the rectifier.
Measure the brake gap. If the gap
exceeds the service limit, replace the
electromagnetic brake unit as a whole
(See P79.)
Measure the brake gap. If the gap
exceeds the service limit, replace the
electromagnetic brake unit as a whole
(See P79.)
Main factor Countermeasure
Wrong assembling of Assemble the brake
packings cover packings and V ring
securely.
Replace the packing if
deteriorated.
Leaving the electric Operate the electric chain
chain hoist in an hoist regularly.
environment with rich
moisture
Dew condensation Pay attention to the use
in an environment where
the ambient temperature
changes rapidly.
Over current due to Operate the electric chain
over voltage or low hoist at the rated voltage.
voltage
Excessive inching or Do not perform excessive
plugging operation operation.
(consecutive
impression of start
rush current)
Over current due to Use the electric chain hoist
over load with a load less than the
capacity.
Operation exceeding Check the short time rating
short time rating or and intermittent rating.
intermittent rating Use the electric chain hoist
within these ratings.
Over current due to The electric chain hoist
open phase operation cannot lift a load in open
phase operation. When any
abnormality is observed,
stop the operation
immediately and check
the cause of open phase
operation.
Excessive inching Do not perform excessive
operation operation.
Excessive inching Do not perform excessive
operation operation.
3
(to be continued)
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