vacuubrand RE 2.5, Инструкция по эксплуатации

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43 20901559_EN_RE_RZ_V7_230523
Commissioning (operation)
5.2.1 5.2.1 Operation with gas ballast Operation with gas ballast
The supply of gas ballast reduces the condensation of pumped
substances (e. g., water vapor, solvents) inside the pump or decon ‑
taminates the pump oil from volatile substances. With gas ballast
valve open, the ultimate vacuum will be slightly reduced.
DANGER DANGER
Explosion risk due to air as gas ballast.
By using air as a gas ballast, a small amount of oxygen
enters the inside of the vacuum pump. Depending on
the process, a potentially explosive mixture can form
due to oxygen in the air, or other dangerous situations
can occur, if the pumped media react with the oxygen.
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Make sure that air/gas intake through the gas ballast
valve can never lead to hazardous, explosive or oth‑
erwise dangerous mixtures.
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In the presence of flammable substances and for
processes in which a potentially explosive mixture
can occur, use only inert gas as a gas ballast, e. g.,
nitrogen (max.1.2 bar/900 Torr absolute).
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If in doubt, always use inert gas for gas ballast.
CAUTION
Possible damage due to accidental venting in
case of open gas ballast valve.
If the manual gas ballast valve of the rotary vane pump is
open, a power failure or switching off the pump may cause
accidental ventilation of the pump or the vacuum system.
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Take appropriate safety measures, if accidental ventila ‑
tion constitutes a potential source of danger, e. g., install
a solenoid operated gas ballast valve.
Gas ballast