98
Troubleshooting (continued)
Brake
Symptom Cause Remedy Main factor Countermeasure
Stops after traveling
over 4 to 5 links
after the operation
is stopped.
(Guideline: The
travel of the Load
Chain is within 2 to
3 links.)
Abrasion of brake
lining
Check the manner of operation
(excessive inching or frequent use).
Carry out the inspection and use it
correctly.
Excessive inching
Frequent use
Check the electric
chain hoist regularly.
Use it correctly in
accordance with the
manual.
The load slides
down when stopped
Defective function
of the Friction
Check the place to use and friction
function. Carry out the inspection and
use it correctly.
Abrasion from habitual
use for a long time
Change in mechanical
characteristics from
leaving it for a long
time
Use it correctly in
accordance with the
manual
Pay attention to the
place to use and the
storage place.
Chapter 3 Troubleshooting
3
Brake / Internal wiring Troubleshooting
Internal wiring
Symptom Cause Remedy Main factor Countermeasure
Electric chain hoist
does not operate.
Breakage of wire Check the wire. Repair the wire if broken. Vibration, impact
Use the electric chain
hoist avoiding the impact.
Lead wire damaged at
assembling
Be careful not to have
the lead wire caught
when assembling.
Check the terminal. Repair the terminal if
it is broken.
Improper crimping Use the proper
crimping tool.
Wrong wiring Check the wiring in accordance with the
wiring diagram. Correct the wiring if it is
wrong.
Wrong wiring at
assembling
Correct the wiring in
accordance with the
wiring diagram.
Loosened terminal
screw (results in
heat generation to
burn)
Tighten the loosened screws. Insufficient tightening
at assembling
Tighten screws
securely.
Vibration, impact
Use the electric chain
hoist avoiding the impact.
Incomplete
connection of plug,
connector and
insertion terminal
Connect plug, connector and insertion
terminal correctly if they are not
connected securely.
Tighten the lock ring of the connector
plug securely.
Incomplete connection
at assembling
Connect plug,
connector and
insertion terminal
securely.
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