Rockwell Automation 1325R Small DC Motors User Manual - Manual (Page 5)

Small DC Motors 5
Important: When motors are provided with thermal protection (typically
thermostats), it is important to properly connect and apply the
devices. This will ensure that the motor is properly protected
from being operated if thermal limits are reached and/or
exceeded. The control system must be configured to reduce the
motor load and/or shut down the motor control system to allow
the motor to cool to a level within acceptable operating ranges.
If the motor is operated with the thermal protective devices
tripped (indicating an over temperature condition), the motor
insulation could be damaged and complete failure of the motor
insulation is possible. In the event of motor failure due to an
over temperature condition, Rockwell Automation requires that
motor thermal protective devices (when supplied) be
adequately monitored and incorporated into the motor control
system to maintain warranty. Failure on the part of the
individual installing this equipment to take these steps will
result in the factory warranty being voided.
Operation
These motors are inherently capable of operating over a wide range of
speeds and loads. If the motor is not operated on the type of power supply
for which it was designed, performance will differ from nameplate values
and applicable standards.
The motor should start quickly. If it fails to start, the load may be too great,
the applied voltage too low, or the motor improperly connected and/or the
control misadjusted (check particularly current (torque) limit adjustment).
In any case, immediately disconnect the power and investigate the cause.
While operating the motor, observe the performance. Any undue noise,
overheating, sparking or erratic performance should be investigated and
necessary corrective action taken to prevent serious damage.
Maintenance The fundamental principle of electrical maintenance is keep the apparatus
clean and dry. This requires periodic inspection of the motor, the frequency
of inspection depending upon the type of motor and the service.
!
ATTENTION: Internal parts of this motor may be at line
voltage even when motor is not rotating. Disconnect all AC line
connections before contacting any internal part.