vacuubrand MD 12C NT VARIO o.C., Инструкция по эксплуатации

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43 20901544_E12C+16C_NT Vsel_V1.2_260922
Commissioning (operation)
IMPORTANT!

Example
Operate gas ballast
valve
5.2.2 5.2.2 Operation with gas ballast 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 also prolongs the service life. The ulti ‑
mate vacuum with gas ballast is slightly higher.
Open/close the 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/900 Torr abs.
If the gas volume in the vacuum pump is low, a gas ballast
may be able to be eliminated in these cases.