Pfeiffer Vacuum Hena 26, Руководство по эксплуатации

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6.4 Operating the rotary vane pump with gas ballast
NOTICE
Risk of damage from condensation in vacuum pump
During operation without gas ballast, condensation may form as a result of the vapor compatibility of
the vacuum pump being exceeded.
► Pump condensable vapors only when the vacuum pump is warm and the gas ballast valve open.
► Allow the vacuum pump to run on after process end for another 30 minutes with the gas ballast
valve open.
– This cleans the operating fluid and protects the vacuum pump against corrosion.
The rotary vane pump has a gas ballast system through which air is permanently taken in. To achieve
the lowest possible final pressure, a manual gas ballast valve (ball valve) can be retrofitted as a shut-off
device.
1
Fig. 13: Operating the vacuum pump with gas ballast system
1 Gas ballast filter
6.5 Operating the rotary vane pump with manual gas ballast valve
No intermediate settings possible
An intermediate setting between open/closed is not possible.
“I”
“0”
1
2
Fig. 14: Operating the rotary vane pump with manual gas ballast valve
1 Ball valve 2 Gas ballast filter
Operation
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