INSPECTION, TESTING, AND MAINTENANCE
Procedures not specifically explained in this manual must be performed only by a qualified
technician.
Daily Inspection
Perform the procedures in this section BEFORE INITIAL USE and DAILY. Inspection is needed more often for
heavily used hoists.
1. Check operating mechanisms for proper operation, proper adjustment, and unusual sounds.
2. Frequent Braking System Inspection The braking system must automatically stop and hold up to the rated
load if the hand chain is released.
3. Frequent Hook Inspection
a. distortion, such as bending, twisting, or increased throat opening
b. wear
c. cracks, nicks, or gouges
d. latch engagement (if equipped)
e. damaged or malfunctioning latch (if provided)
f. hook attachment and securing means.
4. Frequent Hoist Load Chain Inspection:
a. Test the hoist under load in lifting and lowering directions and observe the operation of the chain and
sprockets. The chain should feed smoothly into and away from the sprockets.
b. If the chain binds, jumps, or is noisy, first see that it is clean and properly lubricated. If the trouble persists,
inspect the chain and mating parts for wear, distortion, or other damage.
c. Examine visually for gouges, nicks, weld spatter, corrosion, and distorted links. Slacken the chain and move
the adjacent links to one side to inspect for wear at the contact points. If wear is observed or if stretching is
suspected, the chain should be measured as follows:
I) Select an unworn, un-stretched length of the chain (e.g., at the slack end).
II) Suspend the chain vertically under tension and, using a caliper-type gauge, carefully measure the outside
length of any convenient number of links approximately 12" to 24" overall.
III) Carefully measure the same number of links in the used sections and calculate the percentage increase in
length.
IV) If the used chain is 2.5% longer than the unused chain, replace the chain.
5. Check rope or load chain reeving.
WARNING! TO PREVENT SERIOUS INJURY FROM HOIST FAILURE: Do not use damaged
equipment. If any defect or damage is noted, repair the problem before further use.
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