Lodestar CM Hoist, Operating Manual

Page: 54 / 96

have welds toward sheave) and pull through. Using a
wire as a starter, insert the chain, upstanding link first,
into the outboard cloverleaf of the hanger. Make sure
there are no twists between the hook block and then
pull the chain through. In the sheave hanger, the
upstanding links will have the welds toward the
sheaves. Run the chain down to the hook block and
making sure there are no twists between the sheave
hanger and the hook block, insert the end of the chain
into the recess in the top of the hook block. Slide the
dead end screw, with flat sides vertical, through the
hole in the top of the hook block. Place the lockwasher
and nut on the threaded end of the dead end screw.
Use an Allen wrench to hold the head of the dead end
screw stationary and rotate the nut to tighten. To prop-
erly tighten the nut, apply a torque of 45 (61Nm) to 55
pound feet (74.6 Nm) while holding the head of the
dead end screw stationary.
Also, when tightening this dead end screw, it should
be held firmly in position and torqued from the nut end
to avoid damaging the screw and/or chain.
k) Adjust limit switches as described on pages 16 and
17. If the new chain is longer than the old, check to be
sure limit switch will allow for new length of lift. In the
event maximum adjustment does not allow entire
length of lift, check with CM for modification neces-
sary.
Do not allow hook block to hit hoist or allow load chain
to become taut between loose end screw and frame
or else serious damage will result. If hook should
inadvertently hit the hoist-the hoist frames, load chain
and hook block should be inspected for damage
before further use.
Method #2
Treat the old load chain in hoist as a “starter chain” and
proceed with Steps 1a, b, c and f thru k above.
Method #3
a) First proceed with Steps 1a, b, c above.
b) Then, carefully run the load chain out of the hoist.
c) Disconnect hoist from power supply.
d) Remove the electric brake assembly.
e) Rotate the brake hub by hand, at the same time feed-
ing the load chain through the liftwheel area with hoist
upside down or by using a wire to pull the load chain
up onto the liftwheel. Position the chain on the liftwheel
as explained in Step 1f.
f) Refer to Steps 1g thru k above to complete the
installation.
CUTTING CHAINS
CM HoistAloy ® load chain is hardened and it is difficult to cut.
The following methods are recommemded when cutting a
length of new chain from stock or cutting off worn chain.
1. Use a 7” (177.8 mm) minimum diameter by 1/8” (3.175
mm) thick abrasive wheel (or type recommended by
wheel supplier) that will clear adjacent links.
2. Use a bolt cutter (Figure 22) similar to the H.K. Porter
No. 0590MTC with special cutter jaws for cutting hard-
ened chain (1” (25.4 mm)long cutting edge).
Fig 22. Cutting Chain with a Bolt Cutter
TESTING
Before using, all altered, repaired or used hoists that have
not been operated for the previous 12 months shall be tested
by the user for proper operation. First, test the unit without a
load and then with a light load of 50 pounds (22.7 kg) times
the number of load supporting parts of load chain to be sure
that the hoist operates properly and that the brake holds the
load when the control is released. Next test with a load of
*125% of rated capacity. In addition, hoists in which load
sustaining parts have been replaced should be tested with
*125% of rated capacity by or under the direction of an
appointed person and written report prepared for record pur-
poses. After this test, check that the Protector functions. If the
Protector permits lifting a load in excess of 200% of rated
metric load, it should be replaced.
NOTE: For additional information on inspection and
testing, refer to Code B30.16 “Overhead Hoist”
obtainable from ASME Order Department, 22 Law
Drive, Box 2300, Fairfield, NJ 07007-2300, U.S.A.
*If the Protector prevents lifting of a load of 125% of rated
capacity, reduce load to rated capacity.
ORDERING INSTRUCTIONS
The following information must accompany all correspon-
dence orders for replacement parts:
1. Hoist Model Number from identification plate
2. Serial number of the hoist stamped below identifica-
tion plate.
3. Voltage, phase, hertz from identification plate.
4. Length of lift.,
5. Key number of part from parts list.
6. Number of parts required.
7. Part name from parts list.
8. Part number from the parts list.
If trolley replacement parts are ordered, also include the type
and capacity of trolley.
Note: When ordering replacement parts, it is recom-
mended that consideration be given to the need
for also ordering such items as gaskets, fasten-
ers, insulators, etc. These items may be damaged
or lost during the disassembly or just unfit for
future use because of deterioration from age or
service.
50
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WARNING
Cutting Chain Can Produce Flying Particles.
TO AVOID INJURY:
Wear Eye Protection.
Provide A Shield Over Chain To Prevent Flying Particles.
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WARNING
Using “Commerical” or other manufacturer’s parts to repair
the CM Lodestar Hoists may cause load loss.
TO AVOID INJURY:
Use only CM supplied replacement parts. Parts may look alike
but CM parts are made of specific materials or processed to
achieve specific properties.