Product Manual

11
Figure 8
HOIST CAPACITY TOP HOOK and BOTTOM HOOK
X-Normal X-Limit
1/8 Ton 0.906 inches 1 inch
1/4 Ton 0.906 inches 1 inch
NOTE: Maximum permissible throat opening of hook with
latch fully retracted.
Figure 9
NOTE: Excessive hook throat opening or twist
indicates abuse or overloading of the hoist. If such
deformation is discovered, inspect hoist, chain and
all supporting members very carefully for additional
indications of excessive hoist loading.
Do not attempt repair of a
hook by heat treating, bending or attaching
anything by welding. Such procedures will
weaken and may cause failure of the hook.
10.0 Operating the Hoist
Before beginning a work shift,
an operator should test the pushbutton station,
limit switches and brake control. If not
functioning properly, they should be replaced
or repaired before putting hoist in service.
Allow the hoist to come to a full stop before
changing direction. Rapidly reversing or catching a
falling load can overload the hoist system and
cause a failure in the hoist and/or chain, resulting
in injury or property damage.
If the hoist is connected to a manual trolley, move
the hoist by pushing on the suspended load. Move
an unloaded hoist by pulling on the empty hook.
Do NOT move the hoist by pulling on the pendant
cord.
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
hoist clean, and store in a clean, dry location.
Follow this general procedure for hoisting loads:
1. Secure the upper hook to the supporting
structure.
2. Place load sling 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 10.
Figure 10
3. 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.
4. Press UP button and remove all slack in load
chain. Increase tension in the load chain until
the hoist is about to raise the load.
5. Check again that the load is properly slung,
directly under hoist, and will not suddenly
swing or twist.
6. Raise load an inch or two above the ground
and stop. Observe load for a few moments,
looking for signs that the load or hoist system
is unstable, or other indications that there is a
problem.
7. Check that the chain is not twisted at the
bottom hook. All welds should face the same
direction (see Figure 14). For hoists with two or
more falls of chain, make sure the bottom hook
is not turned over. This may cause the chain to
twist.
8. Raise load to the traveling height. Raise only
to the height necessary to safely clear all
obstacles.