MBRAUN LABmaster 130 - 3.4 Circulation Mode; 3.5 Regeneration Mode

Operating Instructions – Labmaster
©
130 and MB20G Systems
Instruction Manual
Chapter 3: Principles of Operation
© MBraun, Inc. Edition 1/2007 Page 3-3
Box Volume Table
Box Length 1250 Box Length 1500 Box Length 1800
Box Depth 780
28.86 f
3
/ .81 m
3
34.63 f
3
/ .98 m
3
41.56 f
3
/ 1.18 m
3
Box Depth 1000
35.51 f
3
/ 1.00 m
3
42.61 f
3
/ 1.21 m
3
51.13 f
3
/ 1.45 m
3
Box Depth 1200
43.45 f
3
/ 1.23 m
3
52.14 f
3
/ 1.48 m
3
62.57 f
3
/ 1.77 m
3
3.4 Circulation Mode
Circulation mode is the normal operation mode for working within the glovebox system. During
normal operation working gas is continuously circulated between the glovebox and the gas
purification system. As the working gas passes through the filter column the oxygen and
moisture content is scrubbed from the gas. This provides the user with a consistent inert
glovebox environment in which to work.
Figure 2 - Principle of Circulation
3.5 Regeneration Mode
When the glovebox is used for an extended period of time, oxygen and moisture begins to
accumulate inside the purifier filter column which decreases the effectiveness of the circulation
process. Regeneration is the process of removing the excess oxygen and moisture from the
filter bed material inside the purifier column. This is a multi-step 16 hour process during which
the glovebox cannot be used for normal operation (circulation).
The regeneration procedure should not be interrupted at any time
during the process. If for any reason the process is terminated
prematurely, do not restart any system processes. Contact the
M.Braun Service Department immediately.