Operation With Gas Ballast - vacuubrand PC301 VARIO select Series Instructions For Use Manual

Vent
Description
Operate the
gas ballast valve
20901118_EN-US_PC301x VARIO select Serie_V1.3_100720
Vent

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.
Commissioning (operation)
43