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Electric Chain Hoists (Single Brake)
Model NECH
PAGE: 36
NECH-0214
ACI Hoist & Crane | 2721 NE 4th Ave Pompano Beach, FL 33064| 954.367.6116
Visit WWW.ACIHOIST.COM for the most current information
6.5
Limit Switch Inspection
ACI hoists are equipped with a rocker type limit switch (see Figure 6.5.1), which are operated by the limit lever and
actuator attached to the chain in the raising direction, and an actuator and stopper attached to the chain in the lowering
direction. The chain operated limit stop is provided to guard against over travel of the load in either raising or lowering
directions, which can cause damage to the hoist.
Figure 6.5.1
When the highest position is reach the limit actuator (limit spring) on the load chain, above the hook block, trips the limit
lever (see Figure 6.5.2).
Never weld handles or other attachments to the hook. Heat applied to the hook will alter the
original heat treatment of the hook material and reduce the strength of the hook; if handles
or other attachments are required on the hook, contact ACI or the distributor of the hoist.
Rocker Arm
Limit Lever
DO NOT
use cotter pins, groove pins or locknuts that have been removed during
disassembly. They may be damaged during removal and will not function properly if reused.
Always install hook nuts using new cotter pins.