18
Operation
Fig. 9: Standard version 42 of gas ballast valve
Gas ballast valve,
corrosive gas version
If the pumping process requires the connection of flushing gas, the C version of the
gas ballast with the flushing gas connection must be used.
Fig. 10: Corrosive gas version of gas ballast valve
Î
Connect flushing gas at the flushing gas connection.
Î
Set flushing gas pressure; maximum pressure 1.5 bar (absolute).
– Select the type and amount of flushing gas depending on the process; consult
Pfeiffer Vacuum if necessary.
0
0
1
1
0
1
0
1
C-Version
CAUTION
Flushing gas pressure higher than allowed endangers the operational reliability
of the pump.
The power input of the pump, the temperature and the ejection of operating fluid will
increase.
Î
Observe the maximum permissible flushing gas pressure.
Î
Set the amount of flushing gas on site.
