installation &
operating instructions
ac induction motors
5
mounted f1 or f2 installations, remove plugs located at each
end of stator. In vertical output shaft down flange mounted
installations, remove plugs located on face of output flange.
Foot mounted motor
Motor should be installed on a rigid foundation to prevent
excessive vibration and should be fastened securely to a base
with maximum size bolts.
Flanged motor
All registers are accurately machined to match with the driven
equipment. Matching surfaces should be free from dirt or burrs
and solidly engaged. The complete assembly should turn freely
without stressing shaft and bearings from misalignment
and thrust.
location
1 Drip-proof motors are intended for use where atmosphere is
relatively clean, dry and non-corrosive. Keep windings clean
with a soft brush, cloth or vacuum.
2 Totally-enclosed motors may be installed where dirt,
moisture and corrosion are present.
note
in all cases, no surrounding structure should obstruct normal
flow of ventilating air through or over motor.
warning
Do not install general purpose motors where hazard-
ous, inflammable or combustible vapors or dust are
present, due to the possibility of explosions or fire
and damage to property or injury to personnel.
electrical connections
1 Connect motor to correct power supply according
to nameplate.
2 Motor and control wiring, overload protection and ground-
ing should be done in accordance with the National Electric
Code and local regulations.
3 Identify motor auxiliary device such as space heater or
temperature sensors. These should have their own isolated
circuits insulated separate from the motor power cables.
start up
warning
The insulation resistance of the motor winding should
be checked before energizing the motor.
1
It is recommended that the motor be initially started uncou-
pled from load. Check direction of rotation. If rotation must
be changed, allow the motor to come to a complete stop,
and interchange any two leads on a three phase motor. Fan
on fan-cooled motors that have directional rotation name-
plates must be reversed on the mounting shaft if the rotation
is changed.
2
Connect load - The motor should start quickly and run
smoothly, if not, shut o the power at once. Recheck the
assembly including all connections before restarting.
3
If excessive vibration is noted, check for loose mounting
bolts, a motor support structure that is too flexible or trans-
mitted vibration from adjacent machinery. Periodic vibration
checks should be made as foundation settles.
4
Operate under load condition for a short period of time.
Check operating current against nameplate.
lubrication of ball or roller bearings
Grease lubricated bearings as supplied, are adequate for a long
period of operation without re-lubrication. A good maintenance
schedule for re-greasing will vary depending on motor size,
speed, duty and environment.
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General