Marathon Electric C1160 Installation, Operation And Maintenance Instructions

INSTALLATION, OPERATION, AND MAINTENANCE
INSTRUCTIONS FOR 48 AND 56 FRAME MOTORS
1. Disconnect power to the motor before performing installation or maintenance.
2. Discharge all capacitors before servicing motor.
3. Always keep hands and clothing away from moving parts.
4. Electrical repairs should be performed by trained and qualified personnel only.
5. Be sure required safety guards are in place before starting equipment.
6. Failure to follow instructions and safe electrical procedures could result in serious injury.
GENERAL INFORMATION:
Marathon Electric motors are all fully tested and inspected
before shipment. The most common cause of troubles
occurs in either: shipment, improperly matched power
supply, or failure to follow the following installation
instructions. These instructions are intended as a guide to
prevent these troubles from occurring.
UNCRATING:
Check carefully for any damage that may have occurred in
transit. Report any obvious damage to your freight claim
agent immediately before uncrating. After uncrating, check
further that no apparent damage has been incurred in
handling. Check that the motor shaft turns freely.
POWER SUPPLY:
Make certain that the line voltage of the power supply on
which the motor is to operate corresponds with the motor
nameplate voltage (also check frequency and phase against
the motor nameplate). Be sure that dual voltage motors are
properly connected to correspond to the power supply
voltage (check motor connections with the diagram on the
motor nameplate or decal). Check the size and ampere
rating of the power supply and control box against the
amperes marked on the nameplate (for voltage used) to
insure adequate wiring capacity.
EXPOSURE:
Check to determine that the motor has not been exposed to
dirt, grit, or excessive moisture in either shipment or storage
before installation. Never start a motor that has been wet
without having it thoroughly dried (by a competent service
shop). Clean the motor of any dirt or grit.
INSTALLATION:
Now...properly mount, align, and connect the motor to a free
turning load. With adequate power, wiring, and horsepower,
you should experience dependable service from your new
Marathon Electric motor for many years to come.
OPERATION:
Before initial starting:
1. Check that voltage and frequency stamped on motor and
control nameplates correspond with that of the line.
2. Check all connections to the motor and control with the
wiring diagram.
ALLOWABLE VOLTAGE AND FREQUENCY RANGE:
If voltage and frequency are within the following range,
motors will operate,
MPN 415 10/98
MARATHON ELECTRIC
but with somewhat different
WARNING
characteristics than obtained with correct nameplate values.
1. Voltage: Within 10% above or below the value stamped
on the nameplate.
2. Frequency:
stamped on the nameplate.
CLEANLINESS:
Keep both the interior and exterior of the motor free from dirt,
water, oil, and grease. Motors operating in dirty places
should be periodically disassembled and thoroughly cleaned
by a competent service shop.
CARE AND MAINTENANCE:
Ball Bearings: Require no attention during the life of the
bearings.
Sleeve Bearings: Reoil with 10 drops of 5W30 oil annually,
after three years of normal service.
TROUBLES:
If trouble is experienced in the operation of the motor, make
sure that:
1. The bearings are in good condition and operating
properly.
2. There is no mechanical obstruction to prevent rotation.
3. All bolts and nuts are tightened securely.
4. Proper connection and alignment to driven machine or
load has been made.
In checking for electrical troubles, be sure that:
1. The power supply voltage and frequency correspond to
the voltage and frequency stamped on the nameplate of
the motor.
2. The voltage is actually available at the motor terminals.
3. The fuses and other protective devices are properly
sized for the motor and are in proper operating condition.
4. All connections and contacts are properly made in the
circuits between the control apparatus and motor.
P.O. Box 8003
Wausau, WI 54402-8003
Within 5% above or below the value
Phone: (715) 675-3311