Ingersoll Rand MCH5 Manual De Instalación Y Operación página 6

• Do not allow load chain, on 15 and 20 ton VL2 hoists, to accumulate on one side (under one
hoist body). Excessive loading to load chain anchor may occur resulting in a falling load
which can cause death, injury or property damage.
• The clicking sound of the pawl on the ratchet gear is normal when a load is being raised.
Storing the Hoist
1. Always store the hoist in a no load condition.
2. Wipe off all dirt and water and hang in a dry place.
3. Oil the chain, hook pins and hook latch pins.
4. Before returning hoist to service follow instructions for 'Hoists not in Regular Service' in the
"INSPECTION" section.
Frequent and periodic inspections should be performed on equipment in regular service. Frequent
inspections are visual examinations performed by operators or service personnel during routine
hoist operation. Periodic inspections are thorough inspections performed by personnel trained in
inspection and maintenance of the hoist. 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 an
appointed person. A determination must be made as to whether a deficiency constitutes a safety
hazard before resuming operation of the hoist.
Records and Reports
Some form of inspection record should be maintained for each hoist, listing all points requiring
periodic inspection. A written report should be made monthly on the condition of the critical parts
of each hoist. These reports should be dated, signed by the person who performed the inspection,
and kept on file where they are readily available for review.
Frequent Inspection
On a hoist in continuous service, frequent inspection should be made at the beginning of each shift.
In addition, visual inspections should be conducted during regular service for any damage or
evidence of malfunction.
1. OPERATION. Check for visual or abnormal noises which could indicate a potential problem.
Do not operate a hoist unless the load 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, return the hoist to your nearest Ingersoll-Rand
repair center. 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. HOOK LATCH. Check operation of the hook latch. Replace if broken or missing.
3. HOOKS. Check for wear or damage, increased throat width, bent shank or twisting of hook.
Replace hooks which exceed the throat opening discard width (15%) shown in Table 1 (ref.
Dwg. MHP0040) or exceed a 10
tip of the hook, the hook is sprung and must be replaced. Check hooks swivel easily and
smoothly. Repair or lubricate as necessary.
WARNING
NOTICE
INSPECTION
°
twist (ref. Dwg. MHP0111). If the hook latch snaps past the
5