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Operation
Initial Start
WARNING
Improper operation may cause personal injury or
damage to equipment.
Operate within nameplate ratings and in accordance with
instructions in this manual.
CAUTION
Do not exceed number of Siemens specified hot and
cold starts per hour.
Will cause overheating.
Allow time between starts to permit stator windings and
rotor cage to cool.
NOTE
If motor has been out of service or in storage for more
than 30 days, consult Siemens Storage
Recommendations ANIM-03114, Preparation for
Service
CAUTION
FOR MOTORS EQUIPPED WITH BACKSTOP OR NON-
REVERSE DEVICE
Attempting to rotate motor with non-reverse device in
wrong direction may result in severe damage to the
motor.
Connect power supply phases to motor terminals exactly
as indicated on motor nameplate to insure proper
direction of rotation. Any other connection will result in
wrong direction of rotation.
After installation is completed, but before motor is put
in regular service, make an initial start as follows:
1. Check that motor, starting, and control device
connections agree with wiring diagrams.
2. Check that voltage, phase, and frequency of line
circuit (power supply) agree with motor nameplate.
3. If motor has been out of service or in storage
(installed or uninstalled) se Out of Service/Storage
Section before proceeding.
4. Check
motor
accompanying motor.
been properly lubricated and oil wells are filled.
See motor outline drawing to determine proper oil
level.
service
record
and
Be certain bearings have
5. If possible, remove external load (disconnect drive)
and turn shaft by hand to assure free rotation. This
may have been done during installation procedure;
if so, and conditions have not changed, this check
may not be necessary.
6. If drive is disconnected, run motor at no load long
enough to be certain that no unusual condition
exists.
Listen and monitor for excessive noise,
vibration, clicking or pounding and that oil rings are
turning if so equipped.
immediately.
before putting motor in service.
7. If drive cannot be disconnected, interrupt the
starting cycle after motor has accelerated to low
speed. Carefully observe for unusual conditions as
motor coasts to a stop. Repeat several times if
necessary.
nameplate (if so equipped) or Motor Data Sheet for
recommended number of starts and cooling period
between starts.
8. If both bearings are insulated, make sure ground
strap or brush is connected so rotor is grounded.
Disconnect ground strap, if used, only when unit is
not operating to check bearing insulation integrity.
9. When checks are satisfactory, operate at lowest
load possible and look for any unusual condition.
Increase load slowly to maximum, checking unit for
satisfactory operation.
Out of Service/Storage
Cleaning
Both the interior and exterior of the motor should be
free of spilled oil, water, dust and dirt. The exterior
should be wiped and the interior blown out with
compressed air at reduced pressure or with a small
hand bellows.
Flying dirt, dust or other particles.
May cause eye injury.
Wear safety glasses and dust mask when using
compressed air.
Make sure that the bearings and lubricant cavities are
tags
free of dust and dirt, and that oil plugs are tight.
Scratches, bruises, or rust on the shaft journal must be
carefully removed.
- 11 -
If present, stop motor
Investigate the cause and correct
Refer
to
motor's
Starting
(over 30 Days)
WARNING
Duty
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