14
IDLE SHEAVE ROTATION & DEFORMATION (Not applicable to 0.5 Ton model)
The idle sheave must be cleaned and checked if there is foreign matter on it. The following three points must be checked:
• Abnormalities on the sheave bearings or axis of rotation
• Foreign matter collected on the idle sheave pocket
• Deformed idle sheave projections (Fig.25)
3.2.4. OTHER ITEMS TO BE CHECKED MONTHLY:
• Check For Loose Bolts, Screws And Nuts
• Inspect For Worn, Corroded, Cracked Or Distorted Parts Such As Pins, Bearings, Shafts And Gears
• Check Electrical Parts For Signs Of Pitting Or Any Deterioration Of Controls, Limit Switch And Push Button Station
• Finally, Perform The Daily Inspection Before Operating The Hoist
3.3. ANNUAL INSPECTION
• Check the entire range of movement of hoist with rated load.
• Carefully check that even with rated load and at the highest speed, the hoist operates safely and smoothly.
Figure 25
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