Electric Chain Hoists (Single Brake)
Model NECH
PAGE: 49
NECH-0214
ACI Hoist & Crane | 2721 NE 4th Ave Pompano Beach, FL 33064| 954.367.6116
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sure inter-bearing surfaces of links are well coated. Also apply the grease to the areas of the load chain that contact the
load sheave (see Figure 7.1.3.1). Ensure that the grease is applied to the contact areas in the load sheave pockets.
Figure 7.1.3.1
NEVER
allow load chain to become dry. Lubricate every 3 months or after observing operating conditions for a few days
and setup a regular schedule for chain lubrication.
Frequency of lubrication depends upon use and environment. If necessary lubricate more often and frequently for
heavier usage or severe conditions.
ALWAYS
clean the load chain before lubrication.
7.2
Chain Maintenance
The load chain should be kept clean and free from any coating or deposits of foreign material which can cause buildup
and change link dimensions or reduce the flexibility between chain links. The cleaning process utilized to clean the chain
must not damage the chain; any solution used shall be acid-free.
Replacement chain should be stored in a manner to prevent damage or deterioration to the chain.
During installation of chain, care should be exercised to avoid dragging the chain in dirt or around objects that will
scrape, nick, cut, crush or induce sharp bends in the chain.
Load chain links articulate slowly under high bearing pressures. The load chain must be lubricated, refer to the
Lubrication section of this manual.
7.3
Chain Replacement
Instructions for replacing the load chain on the hoist are outlined below. Parting of replacement load chain must be the
same as the original parting of load chain on the hoist. Refer to Figure 6.6.2 for parting arrangement of hoists and Figure
10.2.1
for Chain Assembly.
1.
Follow the procedures and instructions listed in the Maintenance and Inspection sections of this manual.
2.
Remove any load from the hoist hook.
3.
Lower hoist hook until lower limit switch stops downward motion of hook.
4.
If the hoist is equipped with a chain container, remove the chain container. Refer to Figure 4.2.4.3. If the hoist
does not have a chain container, locate the chain support on the hoist body and remove the load chain.