CS750 User Manual
Rev E, April 2018
Page 25 of 31
Severe Service – Crane scale is operated at 85-100% of capacity and used in
environmental conditions that are unfavorable, harmful or detrimental to the use of the
crane scale. Complete the frequent service inspection daily to weekly and record the
periodic service inspection quarterly.
Inspection Types
Frequent Service Inspection (records not required)
A frequent visual inspection should be undertaken at intervals dictated by the relevant
service category and conducted by the operator or designated person.
1. Inspect for structural deformation, cracks or excessive wear of any part of the
crane scale or associated adaptive devices.
2. Inspect for loose or missing guards, fasteners, covers, stops, or nameplates.
3. Inspect all functional operating mechanisms and automatic hold and release
mechanisms for improper adjustments interfering with operation of the crane
scale or associated adaptive devices.
4. Inspect for distortion such as bending, twisting or increased throat opening.
Periodic Service Inspection (records required)
A periodic visual inspection should be undertaken at intervals dictated by the findings of
frequent service inspections and other operational and environmental factors.
Inspections should be conducted by the operator or designated person and
documented to provide the basis for continuing assessment and evaluation. The
periodic inspection should cover all frequent service inspection requirements in addition
to the following items:
1. Inspect for loose bolts or fasteners.
2. Inspect for cracked or worn gears, pulleys, sheaves, sprockets, bearings, chains
and belts.
3. Inspect for excessive wear of linkages and other mechanical parts.
4. Inspect for excessive wear at hoist hooking points and load support clevises and
pins.
5. Inspect for any visible bends or twists of rigging devices used in scale operation.
6. Inspect all latches and locks for proper operation.
Removal From Service Criteria
Hooks
Hooks shall be removed from service when damage is discovered. Hooks can only be
returned to service if a qualified person approves the continued use of the item and only
after a root cause investigation and corrective action has been initiated.
1. Hooks show cracks, nicks, or gouges.
2. Hook has wear exceeding 10% of the original sectional dimension.
3. Hook has any visible bend or twist from the plane of the unbent hook.
4. Hook has an increase in throat opening of 5% not to exceed ¼ of an inch.
5. Self-locking hooks are unable to lock.
6. A hook latch that is inoperable.
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