KITO ER2 - Brake

102
Troubleshooting (continued)
Brake
• Do not adjust/disassemble the Electromagnetic Brake.
Adjusting or disassembling the Electromagnetic Brake may result in death or serious injury.
Prohibited
DANGER
Symptom Cause Remedy Main factor Countermeasure
Electromagnetic
Brake does not
operate.
Brake coil burning Measure the coil resistance of the Brake
coil. Replace the Electromagnetic Brake
when the resistance is infinity.
Over current due to
over voltage or low
voltage
Operate the electric
chain hoist at the rated
voltage.
Excessive inching or
plugging operation
(consecutive
impression of start
rush current)
Do not perform
excessive operation.
Over current due to
over load
Use the electric chain
hoist with a load less
than the capacity.
Operation exceeding
short time rating or
intermittent rating
Check the short time
rating and intermittent
rating. Use the electric
chain hoist within these
ratings.
Over current due to
open phase operation
The electric chain hoist
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.
Abrasion of Brake
Lining (exceeding
the magnetic
attraction of the
electromagnetic
brake)
Measure the brake gap. If the gap
exceeds the service limit, replace the
electromagnetic brake unit as a whole
(See P79.)
Excessive inching
operation
Do not perform
excessive operation.
Breakage of
Electromagnetic
Brake lead wire
Check the conduction of the lead wire.
Replace the wire without conduction.
Lead wire damaged at
assembling
Be careful not to have
the lead wire caught
when assembling.
Insufficient
connection of
brake lead wire at
insertion terminal
Connect the insertion terminal securely.
Replace the loose insertion terminal if
any.
Insufficient connection
at assembling
Connect the insertion
terminal securely at
assembling.
Chapter 3 Troubleshooting
3
Brake Troubleshooting