Rockwell Automation 1329M AC Induction Motors, 56-5000 Frame, User Manual - Manual (Page 5)

AC Induction Motors 5
Direct Connected Drive
Flexible or solid shaft couplings must be properly aligned for
satisfactory operation. On flexible couplings, the clearance between
the ends of the shafts should be in accordance with the coupling
manufacturer’s recommendations or NEMA standards for end play
and limited travel in coupling.
MISALIGNMENT and RUN-OUT between direct connected shafts
will cause increased bearing loads and vibration even when the
connection is made by means of a flexible coupling. Excessive
misalignment will decrease bearing life. Proper alignment, per the
specifications of the coupling being used, is critical.
Some large motors are furnished with roller bearings. Roller bearings
should not be used for direct drive.
Electrical Connections
!
ATTENTION: Install and ground per local and national
codes. Consult qualified personnel with questions or if
repairs are required.
!
ATTENTION: To guard against personal injury and/or
machine damage, assure that the following guidelines are
followed:
• Disconnect power before working on motor or driven
equipment.
• Motors with automatic thermal protectors will
automatically restart when the protector temperature
drops sufficiently. Do not use motors with automatic
thermal protectors in applications where automatic
restart will be hazardous to personnel or equipment.
• Motors with manual thermal protectors may start
unexpectedly after protector trips. If manual protector
trips, disconnect motor from power line. After
protector cools (five minutes or more) it can be reset
and power may be applied to motor.
• Discharge all capacitors before servicing motor.
• Keep hands and clothing away from moving parts.
• Never attempt to measure the temperature rise of a
motor by touch. Temperature rise must be measured
by thermometer, resistance, imbedded detector, or
thermocouple.
• Electrical repairs should be performed by trained and
qualified personnel only.
• Failure to follow instructions and safe electrical
procedures could result in serious injury or death.
• Ensure that safety guards are in use (if required).