Electric Chain Hoists (Single Brake)
Model NECH
PAGE: 39
NECH-0214
ACI Hoist & Crane | 2721 NE 4th Ave Pompano Beach, FL 33064| 954.367.6116
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6.6
Load Chain Inspection
Figure 6.5.6
Load chain on hoists in regular service should be visually inspected daily by the operator. If the hoist is used in multiple
shift operations, the load chain should be visually inspected by the operator at the start of each shift or before the first
time it is operated on that shift. The daily inspection by the operator is for visual damage to the load chain. Such damage
includes nicks, gouges, cracks, wear, twists, kinks, stretch, distortion or deformation, end connections, deposits of
foreign material, heat damage and inadequate lubrication. Inspections should also include visual damage to load chain
end connections including damaged, worn, loose, or missing end connections. When visual damage is present, the
operator shall report such damage to the supervisor and shall not operate the hoist until a more detailed inspection is
performed to determine that the chain can be used or the chain is replaced. Detailed inspection procedures are outlined
below. These procedures also apply to scheduled frequent and periodic inspections.
The load chain should be inspected during scheduled frequent and periodic inspections; or if the daily visual inspection
by the operator indicates a more detailed inspection is required, as follows:
1.
Test the hoist with a load on the hook in both lifting and lowering directions. The load chain should feed
smoothly into and away from the sheaves or sprockets.
2.
If the load chain binds up, jumps or is noisy, check that the load chain is clean and properly lubricated. If the
load chain still binds up, jumps or is noisy, clean the load chain and inspect the chain and mating parts for
wear, stretch, distortion and other damage.
3.
Check the load chain visually for gouges, nicks, weld splatter, carrion, and twisted or distorted links. The
existence of any of these conditions is sufficient reason to question continued use of the chain and therefore
the chain should be replaced.
Chain Spring
Stopper
DO NOT
operate a hoist with a chain that shows any sign of
damage, deformation, excessive stretch or excessive wear.