Lodestar CM Hoist, Operating Manual

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3. Close the switch to energize the 115-1-60/230-1-60
power supply. The light bulb will illuminate if the
solid state reverse switch is not damaged. If the
bulb fails to illuminate, the switch is damaged and
must be replaced.
4. Turn the 115-1-60/230-1-60 power off and remove
the solid state reverse switch from the test circuit.
Reinstall the solid state reverse switch in the hoist and re-
connect it using the wiring diagram supplied with the hoist.
Re-energize the power system supplying the hoist and test
for proper operation. Also, ventilate the space around the
hoist and/or reduced duty cycle, excessive starting, exces-
sive plugging to reduce future malifunctions of the solid
state reverse due to overheating.
ADJUSTMENTS
ELECTRIC BRAKE ASSEMBLY
The correct air gap between armature and field, when brake
is not energized, is 0.025 inch (.635 mm) and need not be
adjusted until the gap reaches 0.045 inches (1.14 mm).
When checking brake gap, always reset to 0.025 inch (.0635
mm).
To adjust the brake, proceed as follows:
1. Disconnect hoist from power supply.
2. Remove back frame cover, see Figure 13.
3. Before adjusting the gap:
a) back off the stud nuts and examine friction linings
and friction surfaces for excessive wear, (min.
thickness .188 inches (4.78 mm)), scoring or
warpage.
b) Check shading coils to be sure they are in place and
not broken. A missing or broken shading coil will
cause the brake to be noisy when hoist is operated.
Any of these symptons indicate the need for
replacement of parts.
4. Turn adjusting nuts clockwise gaging the air gap at
both ends.
5. Replace cover, reconnect the power and check opera-
tion.
LIMIT SWITCHES
If limit switch operation has been checked as described on
page 10 and is not operating correctly or is not automatically
stopping the hook at a desired position, proceed as follows:
1. Disconnect hoist from power supply.
2. Remove back cover, see Figure 13.
3. The position of upper and lower limit switches are
indicated on the fiber insulator.
4. Loosen the screws to permit guide plate to be
moved out of engagement with the traveling nuts,
refer to Figures 16 and 17. For Rotatable Limit
Switch, slightly pull out on the guide spring, disen-
gaging the the travel nut, refer to figure 16A and 17A.
16
Figure 16. Limit Switches,
Models A thru H-2
1. Limit Switch Sub-Assembly
2. Limit Switch Shaft
3. Traveling Nuts
4. Guide Plate
5. Screws
Figure 16a. Rotatable Limit Switch,
Models A thru H-2
Switch
JUMPER
Solid
State
Reverse
Switch
115V, 25W
Light Bulb
4
5
3
2
1