Operation; Safety Information; Stoppages; Fault Diagnosis Table - Siemens 1LA8 Series Operating Instructions Manual

5

Operation

5.1 Safety information

Energizing the motor with anti-condensation
heating (optional)
Caution
Before energizing the motor, always make sure
that the (optional) anti condensation heating is
switched off.
Operating machines
Warning
All covers which are designed to prevent active
or rotating parts from being touched, or which
are necessary to ensure correct air guidance and
thus effective cooling, must not be opened
during operation.
All deviations from normal operation (higher
power consumption, temperature or vibration
level, unusual noises or odors, tripped
monitoring devices, etc.) are indications that the
motor is no longer functioning correctly. In this
case, the maintenance technician must be
immediately notified in order to prevent
disturbances that could either directly or
indirectly lead to severe personal injury or
substantial material damage. If in doubt, power-
down the motor immediately in conformance
with the system-specific safety requirements!
Caution
The surfaces of the machines can reach high
temperatures, which can lead to burns in case of
contact. That is why appropriate measures to
avoid accidental contact must be taken.
Cleaning
To ensure proper functioning of the machine cooling
system, the air ducts (grills, ducts, ribs, pipes) must be
free of pollution / blockages.
Caution
During machine operation, humid air can
condense inside the machine. Depending on the
environmental and operating conditions,
therefore remove the condensation water plug
to drain the water. Afterwards, reinsert the plug.

5.2 Stoppages

Overview
For longer periods where the motor is not being used
(> 1 month), either energize the motor regularly,
approximately once a month, or at least spin the rotor.
Read the instructions given in the "Start-up,
Energizing" section before restoring the machine to
service. If a rotor-locking device has been fitted to the
motor, you must remove it before you spin the rotor.
Caution
If the motor is not to be used for a period in
excess of 12 months, suitable anticorrosion,
preservation, packaging and drying measures
must be taken.
Switching on the anti-condensation heating
If an anti-condensation heating is provided, switch it
on during the machine stoppages.
Placing the machine out of service
For details of required measures see "Transport,
Storage" section.
Lubrication prior to recommissioning
Caution
If the motor has not been used for longer than
12 months, it must be regreased before being
restarted. The shaft must rotate so that the new
grease can be distributed throughout the
bearings.
Pay attention to the instructions on the
lubrication plate.

5.3 Fault diagnosis table

Overview
Note
In the event that electrical faults occur during the
operation of the motor with a converter, please also
refer to the operating instructions of the frequency
converter.
The tables below list general faults caused by
mechanical and electrical influences.
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