•The clicking sound of the pawl on the ratchet gear is normal when a load is being raised.
Storing the Hoist
1.Always store hoist in a no load condition.
2.Wipe off all dirt and water.
3.Oil the chain, hook pins and hook latch pins.
4.Hang in a dry place.
5.Before returning hoist to service follow instructions for Hoists not in Regular Service in “INSPECTION” section.
INSPECTION
•All new, altered or modified equipment should be inspected and tested by personnel trained in safety, operation and maintenance of this equipment to ensure safe operation at rated specifications before placing equipment in service.
Frequent and periodic inspections should be performed on equipment in regular service. Frequent inspections are visual examinations performed by operators or service personnel and include observations made during routine equipment operation. Periodic inspections are thorough inspections conducted by personnel trained in the safety, operation and maintenance of this equipment. ASME B30.16 states inspection intervals depend upon the nature of the critical components of the equipment and severity of usage.
Careful inspection on a regular basis will reveal potentially dangerous conditions while still in the early stages, allowing corrective action to be taken before the condition becomes dangerous.
Deficiencies revealed through inspection, or noted during operation, must be reported to designated personnel trained in safety, operation and maintenance of this equipment. A determination as to whether a condition constitutes a safety hazard must be decided, and the correction of noted safety hazards accomplished and documented by written report before placing the equipment in service.
Records and Reports
Inspection records, listing all points requiring periodic inspection should be maintained for all load bearing equipment. Written reports, based on severity of service, should be made on the condition of critical parts as a method of documenting periodic inspections. These reports should be dated, signed by the person who performed the inspection, and kept on file where they are readily available for review.
Load Chain Reports
Records should be maintained documenting the condition of load chain removed from service as part of a
Frequent Inspection
The Manual Chain Hoist should be inspected at the beginning of each shift. Visual inspections should also be conducted during regular service for any damage or evidence of malfunction which appears between regular inspections.
1.OPERATION. Check for visual signs or abnormal noises which could indicate a potential problem. Do not operate a hoist unless the chain feeds through the hoist and hook block smoothly. Listen for “clicking”, binding or malfunctioning. The clicking sound of the pawl on the ratchet gear is normal when a load is being raised. If chain binds, jumps, or is excessively noisy, clean and lubricate the chain. If problem persists, replace the chain. Do not operate the hoist until all problems have been corrected. Check that hand chain moves freely and without binding or excessive drag. Hook should stop moving when hand chain stops moving.
2.HOOKS. Check for wear or damage, increased throat width, bent shank or twisting of hook. Replace hooks that exceed the throat opening discard width (15%) shown in Table 1 refer to Dwg. MHP0040 on page 6, or exceed a 10º twist refer to Dwg. MHP0111 on page 7. If hook latch snaps past tip of hook, hook is sprung and must be replaced. Check hook support bearings for lubrication and damage. Check hooks swivel easily and smoothly. Repair or lubricate as necessary.
• The external placement of coded marks on equipment
identifying completed inspections and operationally certified (Dwg. MHP0040) equipment is an acceptable method of documenting periodic
inspections in place of written records.
6 | MHD56012 - Edition 8 |
