Operating Manual
Operation instructions Page 3-4
3.2.2 Working Gas
Use
Building up and maintaining the ultra-pure gas atmosphere:
pressure regulation & purging.
Pressure gas for electro pneumatic valves and pneumatic drives.
Purging and filling the system with the desired inert working gas (when
commissioning for the first time and after servicing or repairs of the system.)
Gas type*
Nitrogen, Argon or Helium
Purity
Medium Purity (4.8 or better); from bottles or other gas supply facilities.
Quantity
Permanent supply for the system’s operation (e.g. for pressure compensation,
control of electro-pneumatic valves, and automated purging).
Use
Reprocessing saturated H2O/O2 purifier columns.
Gas type*
Nitrogen/Hydrogen mixture (90-95% N2 with 10-5% H2- portion)
when Nitrogen is used as the working gas
Argon/Hydrogen mixture (90-95% Ar2 with 10-5% H2- portion)
when Argon is used as the working gas
Helium/Hydrogen mixture (90-95% He with 10-5% H2- portion)
when Helium is used as the working gas.
Purity
Medium Purity (4.8 or better); from bottles or other gas supply facilities.
Quantity
Approx. 3.5 m
3
for each Regeneration.
!
NOTE!
Gas Type* – Other gas mixtures, including those with carbon dioxide and
hydrogen, are possible. These require special preparation by
MBRAUN.
Preparation to facilitate the use of such gases is not included in the
standard system – therefore only gas mentioned in table above should be
used.
!
NOTE!
MBRAUN recommends that the same base for both regeneration and
working gases are used (e.g. when using Argon as the working gas, then
the additional purge gas must be Argon; likewise, the regeneration gas
should be an Argon/Hydrogen mixture.
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