7 Gas purifier operation
Regeneration operation
MB-20-G/MB-200G-W_MB-LABmaster_MB-200 MOD_TP700
Operating Manual - V5.0 - 04/2018 - STD
Page
7 - 17
7.5.1 Regeneration sequence
The following table shows the sequence of the regeneration process that runs with
Siemens PLC control for a fixed period of time on activation.
Step Time Valve status open Action
0 0 min. Regeneration is deactivated
1 VRA / VRS / VRE Check for available regeneration gas
2 Start regeneration sequence
3 VRA / VRS / EH Continue regeneration
4 … 7 Multiple process steps
8 VRA / VGB / VRV Evacuation
9 … 16 Multiple process steps
17 Stop, e.g. after
960 min
Regeneration finished
Valve name and function
VGB Gas ballast valve
VRE Regeneration input valve
VRA Regeneration output valve
VRS Regeneration valve – purge output
VRV Regeneration valve – vacuum
EH Heating
VS (PE) Valve reactor refilling
In case of a power failure, the regeneration sequence is interrupted. Depending on the
step during which the interruption occurs, the regeneration sequence will be repeated
or continued. This may require additional quantities of regeneration gas. Refer to
chapter "Troubleshooting".
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