Stoppages; Switching Off - Siemens 1PH818 Operating Instructions Manual

Operation

8.3 Stoppages

CAUTION
Cooling water supply
If the cooling water supply fails or if the motor is operated for a short time without water
cooling, the motor will overheat. This can result in material damage or even a write-off.
Never operate the motor without the cooling water supply switched on. Monitor the
permissible water inlet temperatures.
Risk of burning from hot steam
If the cooling water supply fails, the motor will overheat. If cooling water runs into the hot
motor, hot steam suddenly forms, which escapes under high pressure. The cooling water
system can burst. This can result in death, serious injury or material damage.
Do not connect the cooling water supply until the motor has cooled down.
8.3 Stoppages
Measures when motors are at standstill and ready for operation
● For longer periods when the motor is not being used, either energize the motor at regular
● Please refer to the "Switch on" (Page 49) section before recommissioning the motor.
8.4

Switching off

● When switching off, pay attention to the operating instructions of the frequency converter.
● Switch off the cooling water supply if the standstill period is expected to be lengthy.
52
WARNING
intervals (roughly once a month), or at least spin the rotor.
NOTICE
Damage due to improper storage
The motor can be damaged if it is not stored properly.
If the motor is out of service for extended periods of time, implement suitable anti-
corrosion, preservation, and drying measures.
When recommissioning the motor after a long period out of service, carry out the
measures recommended in the chapter entitled "Commissioning (Page 45)".
Siemens AG Operating Instructions V1.0 1PH8
A5E02605207A AA