23
■
Function and Performance
Item Check method Criteria When failed
Operational
Check
• Press the push button and
check each operation.
• The Load Chain can be wound smoothly.
• The Electric chain hoist moves in the same
direction as that of the push button operation.
• When the operation is stopped, the motor
stops immediately.
• When the Emergency Stop Button is pressed,
all hoist motions stop.
• When operating other push button while the
Emergency Stop Button is pressed, the hoist
does not start operation.
• When canceling the Emergency Stop Button,
the hoist operates normally.
Refer to Chapter 3
“Guidance on
Troubleshooting" (P92
to 93).
Brake • Press the push button and
check the operation of the
Brake.
• When stopping the operation, the Brake is
applied immediately and the Bottom Hook
shall stop immediately.
(Guideline: The travel of the Load Chain is
within 2 to 3 links.)
Carry out the inspection in
accordance with the items
in Chapter 2 “Periodic
inspection" Electromagnetic
Brake (P75).
Limit Switch • Press the push button and
check the operation of the
Limit Switch.
• When the hoist is operated to the upper or
lower limit, the motor automatically stops.
Replace the Limit Switch.
Disassemble the actuator
of the Limit Switch to
clean.
Check for no
Abnormal
Sound
• Press the push button and
check the operation.
Sound is also an important
check point. Always be
careful for the noise of the
electric chain hoist.
NOTE
• No abnormal sounds and vibrations Replace the abnormal
part.
Apply oil on the Load
Chain.
• No popping sound from the Load Chain. Check the Load Chain.
(Refer to P20.)
●
Check the following item with no load.
How to Use Daily Inspection of Electric Chain Hoist (EQ Type)
1
(to be continued)
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