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7.2 Occasionally used hoist
(1) A hoist which has been idle for a period one month or more but less than one year shall be given an
inspection conforming to the requirements of section 7.4 before it is placed in service.
(2) A hoist which has been idle for a period of one year shall be given an inspection conforming to the
requirements of section 7.4 before it is placed in service.
7.3 Inspection record
Dated inspection reports and records should be maintained at time intervals and such records are stored
where they are available to authorized personnels.
7.4 Inspection methods and judgement criteria
Item
Inspection methods
Discard limit/criteria
Remedy
1. Hoist body
(1) Casting damage
Check visually.
･
No cracks on hoist body.
Replace.
(2) Abnormal sounds
during operation
Lift and lower a light
load.
･
No vibration or irregular noise
from the motor or from inside the
hoist body.
Overhaul.
(3) gear oil quantity;
contamination
Check visually.
･
Change gear oil regularly,
matching usage frequency.
Replace.
(4) Controller cover and
case damage
Check visually.
･
No deformation or cracks.
Replace.
(5) Name plate damage
Check visually.
･
Capacity should be legible
Replace.
(6) Cable and cord joint
damage
Check visually.
･
No damage or loose screws.
Replace/repair.
(7) Brake function
Check brake slipping
on lifting or lowering
with no load.
･
Braking distance: approx. 5 chain
links.
Ask service shop to
inspect and repair.
Check
brake
slipping
on lifting or lowering
with rated load at
high speed.
･
Braking distance: approx. 5 chain
links.
Ask service shop to
inspect and repair.
(8) Brush
Check visually.
･
The discard limit of this brush is 8
mm (brush should not be worn past
this limit).
Replace.
