Lodestar CM Hoist, Operating Manual

Page: 13 / 96

Figure 13. Location of Components
Voltage conversion board is located under frame
cover (1) for Models A thru H and under motor hous-
ing cover (2) for Models J thru RRT.
Limit switches and electric brake are located under
frame cover (1) for all hoists.
PROPER PHASING
Since the motor in a three phase hoist can rotate in either
direction, depending on the manner in which it is connected
to the power supply, the direction of hook movement must
be checked during the original installation and each time
hoist is moved to a new location.
Note: Serious damage can result if the hook is run
to the upper or lower limit of travel with the hook
operating in a direction opposite to that indicated by
the control station. Therefore, proceed as follows:
1. Make temporary connections at the power supply.
2. Operate
(UP) control in control station momentarily. If
hook raises, connections are correct and can be
made permanent.
3. If hook lowers, it is necessary to change direction by
interchanging the Red lead and the Black lead of hoist
power cord at power supply. Under no circumstances
should the internal wiring of control station or hoist be
changed to reverse hook direction. The wiring is
inspected and tested before leaving the factory.
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CHECKING FOR TWIST IN LOAD CHAIN
Models E, H, E-2, H-2, R, RR, R-2 and RR-2
The best way to check for this condition is to run the lower
hook, without a load, up to within 24 inches (609 mm) of
hoist. If the dead end of the chain has been properly
installed, a twist can occur only if the lower hook block has
been capsized between the strands of chain. Reverse cap-
size to remove twist.
Models RT, RT-2, RRT and RRT-2
On these models, the load chain is dead ended on top of the
lower hook block. If the chain has been properly installed,
the only way a twist can occur is if the lower hook block has
been capsized between the strands of chain. If this has
occurred, two strands of chain will be wrapped around each
other and to remove this, reverse the capsize.
CHECKING FOR ADEQUATE VOLTAGE AT
HOIST
The hoist must be supplied with adequate electrical power in
order to operate properly. For proper operation, the voltage,
(measured at the end of the standard 15 foot (4.6 m) power
cord with the hoist operating in the
, up direction with full
load) must be as indicated in the table below.
9
L L
!!
WARNING
Allowing the hook block to run into the bottom of the hoist
when raising a load or allowing the chain to become taut
between the loose end screw and the frame when lowering a
load may break the chain and allow the load to drop.
TO AVOID INJURY:
Do not allow the hook block to contact the bottom of the hoist
or the loose end chain to become taut.
NOMINAL
CURRENT
MINIMUM
RUNNING
VOLTAGE
MINIMUM
STARTING
VOLTAGE
115-1-60 104 98
230-1-60 207 196
230-3-60 187 -
460-3-60 396 -
220-3-50 198 -
380-3-50 365 -
415-3-50 399 -