COMEUP Chain Hoist (Ver:02) - Manual (Page 14)

V .Checking and Trouble Shooting
12
Checking Reference
Classification of checks
Checking Item
Checking
Method
Checking Reference
Daily
Periodical
One
month
Three
month
One
year
Marking
Label and the
like
Visual Existence of label
Installation
Functional
operating
mechanisms
Visual
To be properly adjusted and free
from unusual sounds when
operation
Control/
Switch
Working Function Reasonable actuation
Housing Visual To be free from cracks
Wiring Visual
To be free from remarkable
loose or damaged
Cord
Visual,
electricity
To be free from exposure of
conductive wire
Motor
Condition
of insulation
Measure with
resistance tester 1M min
Staining
damage
Decomposition
check
To be free from abnormalities
Braking
Wearing of
brake disc
Decomposition
check
To be free from remarkable wear
and damage
Performance Visual
Distance to be not more than
1.5% of the lifting speed
Gear
Damage ,
wearing
Decomposition
check
To be free from remarkable wear
and damage
Lubrication
condition
Lubricating
At least once per three months
or 100 working hours for normal
usage
Load Chain
elongation of
link length
Measure 5% minimum
Decreasing of
link diameter
Measure 8% of normal diameter max
Kink
phenomena
run-out of
foundation
Visual To be free from kink phenomena
Deforming or
corrosion
Visual To be free from abnormality
Lubrication
condition
Lubricating The chain should be lubricated
every week for normal usage
Surface
condition
Visual
To be free from rust, nicks,
gouges, dents and weld splatter.
Sprocket /
Idle Sheave
Reeving function
Chain should be reeved properly
through sprocket and idle sheave
for double fall operation
Frame
Housing and
mechanical
components
Visual, function To be free cracks, rupture
harmful deformation
Load Hook
Housing and
mechanical
components
Visual, function
To be free cracks, rupture and
harmful deformation by 5%
maximum
latch Visual To be free from deformed