Maintenance – CM-ET Prostar User Manual
Page 7
13. Do not allow the load to swing or twist while hoisting.
14. Never operate the hoist when flammable materials or
vapors are present. Electrical devices produce arcs or
sparks that can cause a fire or explosion.
15. STAY ALERT! Watch what you are doing and use
common sense. Do not use the hoist when you are
tired, distracted or under the influence of drugs, alcohol
or medication causing diminished control.
INSPECTION
To maintain continuous and satisfactory operation, a regular
inspection procedure must be initiated so that worn or
damaged parts can be replaced before they become
unsafe. The intervals of inspection must be determined by
the individual application and are based upon the type of
service to which the hoist will be subjected. The inspection
of hoists is divided into two general classifications
designated as “frequent” and “periodic”.
6
1. When preparing to lift a load, be sure that the attach-
ments to the load hook are firmly seated in hook saddle.
Avoid off center loading of any kind, especially loading
on the point of the hook.
2. When lifting, raise the load only enough to clear the floor
or support and check to be sure that the attachments to
the hook and load are firmly seated. Continue lift only
after you are assured the load is free of all obstructions.
3. Do not load the hoist beyond the rated capacity shown
on the brake end cover. Overloading can cause
immediate failure of some load-carrying part or create a
defect causing subsequent failure at less than rated
capacity. When in doubt, use the next larger capacity of
hoist.
4. Do not use this or any other overhead materials
handling equipment for lifting persons or allow people
on unsecured load.
5. Stand clear of all loads and avoid moving a load over
heads of other personnel. Warn personnel of your
intention to move a load in their area. Do not leave
unsecured load over people.
6. Do not leave the load suspended in the air unattended.
7. Permit only qualified personnel to operate unit.
8. Do not wrap the load chain around the supporting
structure and hook onto itself as a choker chain.
Doing this will result in:
a. The loss of the swivel effect of the load hook which
could mean twisted chain and a jammed liftwheel.
b. The chain could be damaged at the load hook.
9. After positioning, secure load by using auxiliary cables
and/or chains.
10. On the Double-reeved hoists, check for twists in the
load chain. A twist can occur if the lower block has
been capsized between the strands of chain. Reverse
the capsize to remove twist.
11. Do not allow a load to bear against the hook latch. The
latch is to help maintain the hook in position while the
chain is slack before taking up the slack chain.
12. Take up a slack load chain carefully and start load
easily to avoid shock and jerking of hoist chain. If there
is any evidence of overloading, immediately lower the
load and remove the excess load.
Attaching the load hook to an inadequate support may allow the
hoist and load to fall and cause injury and/or property damage.
TO AVOID INJURY:
Make sure the structure and the load hook attachment point have
sufficient strength to hold several times the hoist and rated load.
Allowing a load to bear against the hook latch and/or hook tip can
result in loss of load.
TO AVOID INJURY:
Do not allow a load to bear against the hook latch and/or hook tip.
Apply load to hook bowl or saddle only.
Figure 5A
Figure 5B
T
TO
O
A
AV
VO
OI
ID
D
I
IN
NJ
JU
UR
RY
Y:
:
--D
DO
O N
NO
OTT
Lift more than rated load.
--D
DO
O N
NO
OTT
Operate with twisted, kinked or damaged chain.
--D
DO
O N
NO
OTT
Operate damaged or malfunctioning hoist.
--D
DO
O N
NO
OTT
Lift people, loads over people, allow people on
unsecured load or leave unsecured load over people.
--D
DO
O N
NO
OTT
Operate hoist when load hook is not centered over
hoist.
--D
DO
O N
NO
OTT
Permit load hook block to contact hoist frame or chain
container.
--D
DO
O
Replace damaged or malfunctioning hook latch.
--D
DO
O
Keep load chain well oiled.
Twisted
Do Not Use
10°
MAX.
Black Station
for Hoists
With
Contactor
Control Station
Depress to Move
Load Hook Towards
Hoist Head
Depress to Move
Load Hook Away
From Hoist Head
MAINTENANCE
Normal
Ok To Use
Replace
Hook When
Opening is
Greater
Than 1-1/8”
(28.5mm)