Page 7
block turns. Reconnect rope to
frame anchor, holding firmly
to eliminate rope twisting back to i
ts original position.
Operate hoist up and down a few times. If lower block still
rotates repeat process until twisting is corrected.
e. Lubricate hoisting Cable. For longer cable life, it is
recommended that the cable be lubricated at time of
installation by applying a heavy coating grease as outlined
in SECTION IV, Paragraph 4-3.
SECTION III - OPERATION
3-1. GENERAL. Operation of Series “700” SHAW-BOX electric
hoists is controlled by a convenient pendant push button station.
With it, the hoist can be controlled to give fast lifting and
lowering; or controlled to lift or lower load in small increments,
providing accurate spotting. The push button station has a
built-in interlock to prevent depressing opposing buttons
simultaneously.
When first using hoist, break in by operating under lighter
loads to full travel before applying maximum load.
3-2. PUSH BUTTON OPERATION.
a Depress push button marked “UP” to raise load.
b. Depress push button marked “DOWN” to lower load.
c. Jogging the push buttons will give “hairline” load
movement. The quickness of the depressing motion will
determine the amount of movement. Excessive use of
this “Jogging” feature will cause premature burning of
contact tips and motor overheating.
d. On two-speed hoists, partial depression of button operates
hoist at slow speed; depressing button completely
operates hoist at fast speed.
3-3. OVERLOAD CLUTCH OPERATION (optional). The
overload clutch is factory preset and tested so that the hoist
will lift its full rated load but will refuse to lift overloads which
could cause deformation or weakening of your hoist. If the load
to be lifted exceeds the clutch setting, the hoist motor will
continue to run when the “UP” button is depressed and rotate
the load brake gear without lifting the load. Whenever this
slipping occurs, immediately release the “UP” push button to
prevent overheating of the clutch friction surfaces and the hoist
motor.
3-4. OPERATING PRECAUTIONS
Always know load to be lifted. Lift-Tech does not
recommend lifting loads greater than the rated load
of your hoist.
WARNING
Equipment covered herein is not designed or suitable
as a power source for lifting or lowering persons.
WARNING
Safe operation of an overhead hoist is the operator’s
responsibility. Listed below are some basic rules that can make
an operator aware of dangerous practices to avoid and
precautions to take for his own safety and the safety of others.
Observance of these rules in addition to frequent examinations
and periodic inspection of the equipment may save injury to
personnel and damage to equipment.
a. DO read ANSI B30.16 Safety Standard for Overhead
Hoists and the Operation, Service and Parts Manual.
b. DO be familiar with hoist operating controls
procedures and warnings.
c. DO make sure hook travel is in the same direction as
shown on controls.
d. DO make sure hoist limit switches function properly.
e. DO maintain firm footing when operating hoist.
f. DO make sure that load slings or other approved
single attachments are properly sized and seated in
the hook saddle.
g. DO make sure that the hook latch is closed and not
supporting any part of the load.
h. DO make sure that load is free to move and will clear
all obstructions.
i. DO take up slack carefully, check load balance, lift a
few inches and check load holding action before
continuing.
j. DO avoid swinging of load or load hook.
k. DO make sure that all persons stay clear of the
suspended load.
l. DO warn personnel of an approaching load.
m. DO protect wire rope from weld splatter or other
damaging contaminants.
n. DO promptly report any malfunction, unusual
performance, or damage of the hoist.
o. DO inspect hoist regularly, replace damaged or worn
parts, and keep appropriate records of maintenance.
p. DO use the hoist manufacturer’s recommended parts
when repairing a hoist.
q. DO use hook latches.
r. DO apply lubricant to the wire rope as recommended.
s. DO NOT lift more than rated load.
t. DO NOT use the hoist load limiting device to measure
the load.
u. DO NOT use damaged hoist or hoist that is not
working correctly
v. DO NOT use the hoist with twisted, kinked, damaged
or worn wire rope.
w. DO NOT lift a load unless wire rope is properly seated
in its groove(s).
x. DO NOT use load rope as a sling or wrap rope around
the load.
y. DO NOT lift a load if any binding prevents equal
loading on all supporting ropes.
z. DO NOT apply the load to the tip of the hook.
aa. DO NOT operate unless load is centered under hoist.
ab. DO NOT allow your attention to be diverted from
operating the hoist.
ac. DO NOT operate the hoist beyond limits of load rope
travel.
ad. DO NOT use limit switches as routine operating stops
unless recommended. They are emergency devices
only.
ae. DO NOT use hoist to lift, support or transport people.
Summary of Contents for SHAW-BOX
Page 66: ...NOTES ...
Page 67: ...NOTES ...