Product description
34
6.4 Gas ballast
Fig.6: Operating button for gas ballast
DANGER
NOTICE
Translation of Originial Operating Instruction, KNF 325562-325564 02/23
Vacuum system SH820G / SR820G / SH840G / SR840G
Personal injury through poisoning or
explosion and damage to the pump
à
When the gas ballast valve is open,
make sure that no reactive or ex-
plosive mixtures can form.
à
Close the gas ballast valve if nec-
essary.
à
If inert gas is necessary, contact
KNF Service.
If vaporous media are transferred, the
formation of condensate in the pump
heads can be minimized by opening
the gas ballast valve.