User Manual

page 14 of 27
Documents are only to be used and distributed completely and unchanged. It is strictly the users´ responsibility to check carefully
the validity of this document with respect to his product. Manual-no.: 999198 / 29/09/2009
In case of low boiling solvents when the formation of condensate is unlikely, the use
of gas ballast might be unnecessary.
Shutdown
Short-term:
Has the pump been exposed to condensate?
- Allow the pump to continue to run at atmospheric pressure for a few minutes.
Has the pump been exposed to media which may damage the pump materials or
forms deposits?
- Check and clean pump heads if necessary.
Long-term:
- Take measures as described in section short-term shutdown.
- Separate pump from the application.
- Close gas ballast.
- Drain catchpots (if using with upgrade kits)
- Close inlet and outlet port (e. g. with transport caps).
- Store the pump in dry conditions.
In case of condensable vapours (water vapour, solvents,
...):
☞ Do not pump vapour until the pump has reached its opera-
ting temperature.
☞ Open gas ballast valve. The gas ballast valve is open if the
arrow on the gas ballast cap shows towards the pump.
☞ With gas ballast valve open ultimate vacuum will be re-
duced, pumping speed is decreased.
☞ Use inert gas at the air inlet to avoid the formation of explo-
sive mixtures.
☞ Close gas ballast valve by turning 180°.
gas ballast
NOTICE