Rockwell Automation 1329M AC Induction Motors, 56-5000 Frame, User Manual - Manual (Page 4)

4 AC Induction Motors
Location
In selecting a location for the motor, consideration should be given to
environment and ventilation. A motor with the proper enclosure for
the expected operating condition should be selected. The ambient
temperature of the air surrounding the motor should not exceed 40˚C
(104˚F) unless the motor has been specially designed for high
ambient temperature applications. The free flow of air around the
motor should not be obstructed.
The motor should never be placed in a room with a hazardous
process, or where flammable gases or combustible material may be
present, unless it is specifically designed for this type of service.
1. Dripproof (open) motors are intended for use indoors where
atmosphere is relatively clean, dry and non-corrosive.
2. Totally enclosed motors may be installed where dirt, moisture
and corrosion are present, or in outdoor locations.
3. Explosion proof motors are built for use in hazardous locations as
indicated by Underwriters’ label on motor. Consult UL, NEC,
and local codes for guidance. Refer to manufacturer for
application assistance.
Floor Mounting
Motors should be provided with a firm, rigid foundation, with the
plane of four mounting pads flat within 0.25 mm (0.010 in.) for 56 to
210 frame; 0.38 mm (0.015 in.) from 250 through 500 frame. This
may be accomplished by shims under the motor feet. For special
isolation mounting, contact manufacturer for assistance.
V-Belt Drive
1. Select proper type and number of belts and sheaves. Excessive
belt load will damage bearings. Sheaves should be in accordance
to NEMA Spec. MG-1 or as approved by the manufacturer for a
specific application.
2. Align sheaves carefully to avoid axial thrust on motor bearing.
The drive sheave on the motor should be positioned toward the
motor so it is as close as possible to the bearing.(104˚F) unless
the motor.
3. When adjusting belt tension, make sure the motor is secured by
all mounting bolts before tightening belts.
4. Adjust belt tension to belt manufacturers recommendations.
Excessive tension will decrease bearing life.