6
5.0
Using the Chain Hoist
5.1
Prior to Operation
1. Support for the hoist may be hook, clevis pin,
trolley, or beam clamp. Whatever method of
suspension is chosen, the support
components
must
be rated equal to, or greater
than the capacity of the chain hoist.
2. If the chain hoist has not been used for an
extended period of time, check for proper
operation before putting into service.
3. The brake mechanism must be kept clean and
free from dirt, water, and oil. Never allow oil to
penetrate the brake mechanism. Always keep
your chain hoist clean and store in a clean, dry
location.
4. Although oiling the chain is not mandatory, a
light coat of 30W oil applied periodically to the
chain will create easier operation and prolong
the life of the chain.
5. Check the chain for damage and elongation.
Replace damaged chain before using the
chain hoist.
The load chain supplied with your JET chain hoist
is designed, manufactured, and tested for proper fit
and durability. Over a period of time, the chain may
need to be replaced. For your own safety, use
factory replacement chain only.
Use of other than factory
replacement chain may cause serious injury
and/or damage to the hoist.
6. The top and bottom hooks on your JET chain
hoist are designed to open to warn of an
overload. Both top and bottom hooks (1/2T to
5T models) have indicator points cast into the
hook. See Figure 1. The measurement
between indicator points must fall below the
limit shown in
section 9.2,
Table 3. If it
exceeds the limit, the hook must be replaced.
Figure 1
7. It is important to check top and bottom hooks
for proper opening. If the safety latch no longer
contacts the hook opening, replace the hook.
Never side load the top or bottom hook;
this practice is dangerous and could lead
to serious injury.
8. If the vertical angle at the neck of the bottom
or top hook reaches 10
°
, replace the hook (see
Figure 2).
Figure 2
5.2
Hooking the load
1. Secure the upper hook.
2. Place the bottom hook securely into the object
to be lifted.
3. Place ropes or chain in the center of the
bottom hook, making sure the safety latch is
secure. Never load the hook in front of the
safety latch. See Figure 3.
Figure 3
4. Avoid lifting one load with two hoists. If this is
unavoidable, apply equal weight to both hoists
and use hoists with the proper lift capacity.
Capacity of
each
hoist must be equal to the
total load to be lifted.
