Operation With Gas Ballast - vacuubrand PC 3001 VARIO select Instructions For Use Manual

Commissioning (operation)
Description
Operate the
gas ballast valve
46

5.2.3 Operation with gas ballast

The provision of gas ballast (= addition of gas) ensures that va-
pors do not condense inside the vacuum pump but are instead
ejected from the pump. This makes it possible to pump larger
amounts of condensable vapors, and also prolongs the service
life. The ultimate vacuum with gas ballast is slightly higher.
Open/close the gas ballast valve
ð Turn the black gas ballast cap in any direction to open or
close the gas ballast valve.
ð Evacuate condensable vapors, e.g., water vapor, solvents,
etc. preferably only with the vacuum pump at operating tem-
perature and with the gas ballast valve open.
ð If necessary, connect inert gas as a gas ballast to prevent
the formation of explosive mixtures.
ð Observe the admissible pressure at the gas ballast connec-
tion, max. 1.2 bar/900 Torr abs.
If the gas volume in the vacuum pump is low, a gas ballast
can be eliminated in these cases to increase the solvent re-
covery rate.
20901367_EN-US_PC3001 VARIO select Serie_V1.3_100720