73
Item Check method Criteria When failed
Chain Spring • Check visually and measure
the dimensions.
Dimensional standard
• Check visually to have no apparent setting
(deformation).
• The deformation of the Chain
Spring is caused by excessive
use of the Friction Clutch and
the Limit Switch. Operate the
electric chain hoist properly.
Otherwise it may result in bodily injury
or property damage.
CAUTION
Mandatory
Service Limit of Chain Spring for Capacity (Do
not fall short of the limit value.)
Code Capacity
Length of Chain Spring
(mm)
Standard Limit value
EQ004IS 490kg
29 26.5
EQ005IS 500kg
EQ010IS 1t 26.5 24
Replace the Chain
Spring.
Stopper • Check visually. • The stopper must be attached securely at the
third link from the no load end of the Load
Chain.
Attach the Stopper at
the third link.
Limit Switch
Cover
• Check visually. • To have no deformation, damage and abrasion
• To have no stain
Replace the Limit
Switch Cover.
Disassemble the Limit
Switch Cover and
clean it.
Periodic Inspection
2
Electric Chain Hoist (EQ) Periodic Inspection
(to be continued)
Limit Switch Cover
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