Control Cord - CM LODESTAR Manual De Funcionamiento, Mantenimiento Y Piezas

INSTALLATION (CONTINUED)
Signs of inadequate electrical power (low voltage) are:
• Noisy hoist operations due to brake and/or contactor chattering.
• Dimming of lights or slowing of motors connected to the same
circuit.
• Heating of the hoist motor and other internal components as well
as heating of the wires and connectors in the circuit feeding the
hoists.
• Failure of the hoist to lift the load due to motor stalling.
• Blowing of fuses or tripping of circuit breakers.
To avoid these low voltage problems, the hoist must be connected
to an electrical power supply system that complies with the National
Electrical Code and applicable local codes. This system must also
be rated for a minimum of 20 amps and it must have #14 AWG (2.0
mm) or larger wiring, a disconnecting means, overcurrent protection
(slow blow fuses or inverse-time circuit breakers) and provisions for
grounding the hoist.
Failure to properly ground the hoist presents the danger of electric
shock.
TO AVOID INJURY:
Permanently ground the hoist as instructed in this Manual.
Low voltage can also be caused by using an undersized extension
cord to supply power to the hoist. The following chart should be
used to determine the size wires in the extension cord in order to
minimize the voltage drop between the power source and the hoist.
Single Phase Hoist
Length of Extension Cord
Minimum Wire Size
Up to 50 Feet #14 AWG
(15.2 M) (1.6 mm)
80 FEET #12 AWG
(24.1 M) (2.0 mm)
120 FEET #10 AWG
(36.7 M) (2.6 mm)
Failure to provide a proper supply system for the hoist may cause
hoist damage and offers the potential for a fire.
TO AVOID INJURY:
Provide the hoist with a 20 amp, minimum, overcurrent protected
power supply system per the national Electrical Code and
applicable local codes as instructed in this Manual.
Remember, operation with low voltage can void the CM repair/
replacement policy. When in doubt about any of the electrical
requirements, consult a qualified electrician.
Always disconnect the power from the power supply system
and lockout/tagout disconnecting means before before servicing the
hoist.
Working in or near exposed energized electrical equipment
presents the danger of electric shock.
TO AVOID INJURY:
Disconnect power and lockout/tagout disconnecting means
before removing cover or servicing this equipment.
CHECKING LIMIT SWITCH OPERATION
Operate hoist over the entire length of its rated lift, checking upper
and lower limit switches for correct operation as follows:
• Press (UP) control and raise the lower hook until top of hook block
is about one foot below the hoist.
• Cautiously continue raising the hook until the upper limit switch
stops the upward motion. The upper limit switch is set at the
factory to stop the hook block 3 inches (76.2 mm) from bottom of
the hoist on all units with standard 10 foot ( 3 M) lift except Models
AA and AA-2. Factory setting is 6 inches (152.4 mm) for these
models and for all other models equipped with chain for lifts longer
than 10 feet(3 M).
• If adjustment is necessary, see page 17.
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 the load may break
the chain and allow the load to drop.
Do not allow the hook block to contact the bottom of the hoist
or the loose end chain to become taut.
• Press (DOWN) control and cautiously lower hook until lower limit
switch stops the downward motion. From 7 to 11 chain links
(depending on hoist model) should be between the loose end link
and the hoist entry. See Figures 7 and 8.
• If adjustment is necessary, see pages 16-17. NOTE: If the hoist is
equipped with a chain container reset the upper and lower limit
switches as indicated on page 17. Set the upper limit switch so
Three Phase Hoist
that the uppermost point of hook travel is just below the bottom
Minimum Wire Size
of the chain container. Set the lower limit switch so that there is a
minimum of ten links showing below the bottom if the hoist when
#16 AWG
the hook is at its lowest position.
(1.3 mm)
Under no condition should the hook block or load be permitted
#16 AWG
to come in contact with the chain container. If contact is made,
(1.3 mm)
the function of the chain container can be interfered with and its
#14 AWG
fasteners imperiled.
(1.6 mm)

CONTROL CORD

Unless ordered on a special basis, the hoist is supplied with a
control cord that will position the control station approximately 4
feet above the lower hook when it is at the lower limit of the lift.
If this places the control station too close to the floor, a "control
cord alteration kit" (Key No. 627-474, Part Number 28642) can be
obtained from CM for shortening the length of the control cord.
Tying knots or loops to shorten the drop of the control station will
make the strain relief ineffective and the internal conductors of the
cord may break.
Shorten the control cord using the control cord alteration kit and
the instructions provided with the kit.
12
(ENGLISH)
TO AVOID INJURY:
TO AVOID INJURY:
P/N: 83874 (REV. 627-T) September 2016