Columbus McKinnon CM 653 Serie Manual Del Equipo página 9

(Continued)
OPERATION
upper Hook
latch
Frame
directional lever
load Chain
lower Hook Block
latch
Figure 3 - main parts of lever Hoist
Turn the free chaining knob counter-
clockwise ( ) to disengage the brake
and pull on either chain until the lower
hook is at the desired position. To
disengage the free chaining feature,
move the directional lever to the load ( é )
or unload position ( ê ). Pull the load chain
in either direction to insure the unit is out
of the free chaining mode.
Do not take up the load chain to the point
where the chain stop or lower hook block
becomes jammed against the frame.
ATTACHING THE LOAD
Attach the lower hook to the load so that it
is seated in the bowl of the hook and is not
bearing against the tip of the hook or latch,
and the latch is tight against the hook tip.
Allowing the load to bear against the
hook latch and/or hook tip can result in
loss of load.
to aVoid inJuRy:
Do not allow the load to bear against the
hook latch and/or hook tip. Apply load to
hook bowl or saddle only.
Do not wrap the chain around the load
and hook onto itself as a choker chain
sling or bring the load in contact with the
hoist. Doing this will result in the loss of the
swivel effect of the hook which could cause
twisted chain and a jammed liftwheel. Also,
the chain may be damaged at the hook.
make sure the upper and lower hooks are
in a straight line and the frame is free to
swivel on the upper hook.
SERIES 653
Free Chaining Knob
nameplate
lever
Chain Stop
lower Hook
if the unit is not rigged in a straight line
hook to hook manner, and if the frame is
not free to swivel, lever pull may break
frame and cause physical injury and loss
of load.
to aVoid inJuRy:
Rig the unit in a straight line hook to
hook manner and keep frame free to
swivel (See Figure 4).
4
TO PULL OR LIFT LOAD
move directional lever to load (é) position.
operate lever in up and down motion to
shorten the distance between hooks and
thus pull or lift the load.
When pulling or lifting move the load only
enough to slightly load the unit, then check
to be sure that the attachments to the
hooks and load are firmly seated. Continue
movement only after you are assured the
load is free of all obstructions.
The hoist has been designed for hand
powered operation only. Do not use an
extension on the lever. Lever pulls of 33
pounds on 3/4 ton unit, 44 pounds on 1 ton
unit, 51 pounds on 1½ ton unit, 68 pounds
on 2 ton unit and 77 pounds on the 3 and
6 ton unit will result in rated capacity on
the unit. Any greater pull is an indication
of either an overload or an incorrectly
maintained unit.
Power operation may cause structural
damage or premature wear that in turn
may cause a part to break and allow the
load to fall.
to aVoid inJuRy:
operate the Series 653 Lever Hoist
using hand power only!
TO LOOSEN OR LOWER LOAD
move directional lever to unload (ê)
position. Again, operate lever in an up
and down motion to increase the distance
between hooks and thus loosen or lower
the load.
LOCKED BRAKE
if a hoist which is under load is suddenly
relieved of the load by lifting the load off
of the lower hook by some other means
or pulling down walls, the brake will lock.
The brake will also lock if the lower hook
block is pulled tightly against the frame.
To unlock the brake, turn the directional
lever to the unload (ê) position and pull
on the lever sharply.
Turning the Free Chaining Knob with
a load attached will allow the load to
release and may cause injury.
to aVoid inJuRy:
Never turn the Free Chaining Knob when
the lever hoist is under load.
P/N 53855 (653-D) Rev AA may 2015