Ingersoll Rand MCH5 Manuel D'installation page 5

• The hoist is not designed or suitable for lifting, lowering or moving persons. Never lift loads over people.
Hoist Operation
When facing the hand chain side of the hoist: Rotate hand chain clockwise to raise load. Rotate hand chain
counterclockwise to lower load.
On 15 and 20 ton VL2 hoists, use two operators, one on each of the two hand chains. To keep the load chain centered in
the block assemblies, operate the hoist units simultaneously and at the same speed. An equal amount of unloaded chain
must be maintained under each hoist body.
• 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° twist (ref.
Dwg. MHP0111). If the hook latch snaps past the tip of the hook, the hook is sprung and must be replaced. Check
hooks swivel easily and smoothly. Repair or lubricate as necessary.
WARNING
WARNING
NOTICE
INSPECTION
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