Installation instructions

GEI-M1011A
to prevent the entrance of moisture, dust, or dirt during
storage and installation. Precautions are taken by the
factory to guard against corrosion. The machined parts are
slushed to prevent rust during shipment. Examine the parts
carefully for rust and moisture if the equipment is to be
stored and reslush where necessary.
Oil-lubricated motors are shipped without oil in the bearing
reservoirs. An oil film remains on the bearings, but if the
storage period is to exceed three months, the reservoirs
should be filled. It is suggested that such oil-filled motors
be conspicuously tagged in order to prevent mishandling,
which would cause oil spillage and subsequent damage to
the internal parts of the motor. When filling for storage, fill
to the maximum level shown on the gage or approximately
1 cm (0.5 in.) over the mark showing the standstill level.
Before operating the motor, drain this oil and refill with
fresh oil.
See instructions under Relubrication for oil
recommendations.
The bearings of grease-lubricated motors are greased at the
factory with the grease cavity approximately 50% full.
Rotate the shaft of all grease-lubricated motors 10-20
revolutions at two month intervals.
During storage, windings should be protected from
excessive moisture absorption by some safe and reliable
method of heating. Space heaters, if supplied, may be used
for this purpose. The temperature of the windings should
always be maintained a few degrees above the temperature
of the surrounding air. It is recommended that motors in
storage be inspected, the windings meggered, and a log of
pertinent data kept. Any significant decrease in insulation
resistance should be investigated.
If a motor is to be in storage for over one year, it is
recommended that competent technical inspection service
be obtained to ensure that the storage has been adequate
and that the motor is suitable for service. Contact your
nearest General Electric Sales office to arrange for
inspection service.
A. Unpacking
If the machine or machine parts have been exposed to low
temperatures, unpack it only after it has reached the
temperature of the room in which it will be unpacked or
located; otherwise sweating will occur.
III. INSTALLATION
WARNING: Installation should be
in accordance with the National
Electrical Code and consistent with
sound local practices. Coupling
guards should be installed as needed to
protect against accidental contact with moving
parts. Machines accessible to personnel
should be further guarded by screening,
guardrails or other suitable enclosure to
prevent anyone from coming into contact with
the equipment. This is especially important for
motors that are remotely or automatically
controlled or have automatic re-setting
overload relays, since such motors may start
unexpectedly. Failure to observe these
precautions may result in injury or death to
personnel.
A. Location and Mounting
Allow enough space around the motor to permit free flow
of ventilating air and to maintain an ambient temperature
not over 40ºC. Where a choice of locations is possible,
install the motor so that it will be subjected to the least
amount of dirt, dust, liquids, or other harmful materials.
Mount the motor securely on a level, firm foundation, align
accurately with the driven equipment, and tighten
mounting bolts securely.
Because of their special enclosure features, enclosed
motors can be operated out-of-doors and in dirty locations.
B. Pump and System Precautions
Some precautions are necessary to assure satisfactory
operation of motors in pumping service. The packing gland
in the pump head should be kept in good condition so that
the liquid being pumped will not be forced out along the
shaft and enter the motor through the lower bearing
housing.
Motors driving pumps in pressure systems where the
pressure is maintained after shutdown should be protected
from overspeeding by check valves or non-reverse
couplings.
The SYSTEM REED CRITICAL FREQUENCY should be
25% above or below motor operating speed in order to
avoid excessive vibration.
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