Electric Chain Hoists (Single Brake)
Model NECH
PAGE: 50
NECH-0214
ACI Hoist & Crane | 2721 NE 4th Ave Pompano Beach, FL 33064| 954.367.6116
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5.
Replacement load chain is installed by attaching it to the tail end of the old chain, after disconnecting the old
chain from side of hoist frame and removing the limit actuator.
6.
Use open “C” links for attaching the new
chain to the old chain (see Figure 7.3.1). Links must be identical in
size to hoist chain. Refer to Table 7.3.1 for
“C
Opening Cut
Size”. The
new chain is then run into the hoist as
the old chain is run out. Be certain that all welds on the links of the replacement chain face away from the
center of the load sprocket.
Figure 7.3.1
Table 7.3.1
"C" Opening Cut Size
Capacity*
Pitch Length**
"C" Opening
Size**
0.25
0.5
0.75
9/32
1
2
3
0.83
5/16
1.5 2
3
1.18
7/16
2.5 3 5 7.5
1.34
15/32
*Capacity measured in tons.
**All other measurements in inches.
7.
Remove the hook block assembly and actuator from the old chain and attach them to the replacement chain
at the end which was just run through the hoist. Depending on hoist configuration, install limit actuator (chain
spring and stopper) on the other end of the chain or connect the end chain to the hoist body.
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 load
chain using new cotter pins, groove pins or locknuts.
To avoid serious internal damage to the hoist, when installing the load chain,
DO
NOT
attempt to hand feed the chain into the hoist, or use a piece of wire in place of
the method described herein. To do so may result in serious internal damage to
hoist, as the chain links must be properly seated in the chain sprocket before chain
is run into the hoist. Install the chain only as described in this manual.
