vacuumbrand PC 510 select, Инструкция по эксплуатации, Страница: 47 / 88

48 20901101_EN_PC5xx-6xx_VARIO_select_Serie_V1.0_280618
Commissioning (operation)
IMPORTANT!
5.2.2 Operation with gas ballast
Meaning
The provision of gas ballast (= addition of gas) ensures that vapors
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 service lives are prolonged. The ultimate
vacuum with gas ballast is slightly higher.
Open/close gas ballast valve
ON
OFF
>
Turn the black gas ballast cap in any direction to open or
close the gas ballast valve.
>
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.
>
If necessary, connect inert gas as a gas ballast to prevent
the formation of explosive mixtures.
>
Observe the admissible pressure at the gas ballast connec-
tion, max. 1,2 bar/17.5 psi abs.
If the gas volume in the vacuum pump is low, a gas ballast
can be eliminated in these cases to increase the solvent
recovery rate.

Example
Operate gas ballast
valve