7 Gas purifier operation
Solvent filter operation (optional)
Page
7 - 14
MB-20-G/MB-200G-W_MB-LABmaster_MB-200 MOD_TP700
Operating Manual - V5.0 - 04/2018 - STD
Valve scheme
Figure left shows the arrangement of the valves that
are necessary to operate a manual solvent filter.
1 Solvent filter
2 Gas flow to the reactor
3 Gas flow from glovebox
4 Piping to vacuum pump
V1 Butterfly valve KF 40
V2 Butterfly valve KF 40
V3 Butterfly valve KF 40
V4 Ball valve, 3-way, DN 10
Activation / Deactivation of a manual LMF
Circulation mode (filter activated) Bypass mode (filter deactivated)
Operation: Gas purifier with solvent filter Operation: Gas purifier without solvent
filter
Valve (V1) open
Valve (V2) open
Valve (V3) close
Valve (V1) closed
Valve (V2) closed
Valve (V3) open
Valve (V4) must be in "closed" position. Valve (V4) must be in "closed" position.
Bypass operation with vacuum after refilling
The manual valves must be switched to bypass mode, the manual valve (V4) is switched
to the vacuum position for a minimum of 6 hours. If the time is elapsed, the vacuum is
switched off by closing the manual valve (V4). Now the solvent filter must be refilled with
working gas:
► Switch manual valve (V4) to the refill position for a few seconds.
► Now activate the circulation mode.
7.4.2 PLC-controlled solvent filters
Similar the single and double reactor systems for filtering H
2
O and O
2
, single and double
solvent filter systems are also available. For the MB-200G-W, a second solvent filter is
only in stand-alone version available.
Solvent filter systems follow the same basic functional principles.
The principle of circulation is the same for single and double filter systems.
Systems with two solvent filters offer greater flexibility since one filter can be regenerated
while the second filter remains active.
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