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Class Item Inspection method Discard limit/criteria Remedy
Electric chain hoist
Trolley
5. Hook
(1) Bottom hook
deformation
(2) Hook latch
operation
Check visually
Move with hand or
check visually.
Shape has not deformed from
what it was at time of purchase.
Free of deformation and damage.
Operates normally.
Replace the
hook with a
new one if
deformed.
Replace the
hook latch
with a new
one if deformed or
malfunctioning.
6. Chain spring
and cushion
rubber
(1) Chain spring
deformation
(2) Cushion
rubber
deformation
Check visually.
Check visually
NEVER use spring if it
is deformed as
illustrated or if it stays
compressed and won't
open.
NEVER use cushion
rubber if it is deformed
as illustrated.
Replace chain
spring with a
new one if
deformed.
Replace cushion
rubber with a new
one if deformed.
1. Push button
(1) Function Operate the push
buttons under no
load condition.
Traverses smoothly. If trolley
does not move,
check power
source or see
if the cord is
disconnected.
2. Traversing
unit
(1) Motor brake
operation
(2) Function
Run and stop 2 or
3 times under no
load condition.
When the brake is used, the motor
stops immediately.
The trolley runs smoothly.
If there are
any abnormalities,
ask the service
personnel to
inspect and
repair them.
3. Side plate
(1) Deformation Check visually NEVER use if it seems to be
deformed (as revealed by visual
check).
Replace the
side plate with
a new one if
deformed.
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