Electric Chain Hoists (Single Brake)
Model NECH
PAGE: 37
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
Limit Lever
Rocker Arm
Figure 6.5.2
Limit Actuator
(Limit Spring)
When the lowest position is reached the limit actuator on the tail end of the load chain trips the limit lever (see Figure
6.5.3).
Limit Actuator
(Limit Spring)
Figure 6.5.3
Limit Lever
Rocker Arm
The limit lever is connected to a limit switch that automatically stops the hoist motor. This is intended as a safety device
and is not to be used on a routine basis to stop travel of hook block or to shut off the hoist.
The hoist lower limit device is set at the factory to stop lower travel of the load block with approximately 10 to 15 links of
load chain extending beyond the chain guide on the unloaded side of the hoist. It is recommended that the lower limit
device be set to prevent the load block from resting on the floor and allowing the load chain to go slack.
The hoist upper limit device is set at the factory to stop hook travel when the load block is approximately 3 inches below
the hoist or hoist frame. By changing chain stop location, the limit switch setting can be adjusted. To do this, loosen the
two screws holding the chain stopper until the stopper can be released from the chain (see Figure 6.5.4).
