Operation
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300314330_002_C7 - 05/2021 - © Leybold
In processes, where the process gases or by-products react with air, purge
the pump with nitrogen at every start-up before opening it to the process.
This reduces the risk of reactions (like explosions) when the process gases
come into contact with remaining oxygen in the pump.
Start the pump. The DV 450/650 is ready for operation after 5 minutes, the
DV 800 after 10 minutes.
Dry the pump, if required by the process. To do so turn on the pumping sys-
tem and run it at ultimate vacuum for a period 60 minutes with a dry nitrogen
shaft seal purge before opening it to the process.
Hot surfaces, risk of suffering burns.
Notice safety information 0.3.
4.4 Operation
Depending on the connection the pumps are operated through the remote
control or the Profibus. For the remote control refer to Section 3.6, for the
Profibus to Section 4.2.
In the event of a power failure, the pump will continue to operate for a period
of up to 2 seconds without outputting an error message.
For troubleshooting and testing the frequency converter is equipped with
LEDs and keys.
Please also note the recommendations relating to running up of the pumps
provided at the beginning of Section 4.2.
Some parameters are only taken over after a restart.
DANGER
CAUTION
