MBRAUN LABmaster pro sp - Failure During Regeneration; Cancellation or Power Failure; Regeneration of an LMF; Leak Test

11 Troubleshooting
Failure during regeneration
Page
11 - 18
MB-20-G/MB-200G-W_MB-LABmaster_MB-200 MOD_TP700
Operating Manual - V5.0 - 04/2018 - STD
11.5 Failure during regeneration
For information on the regular regeneration sequence, refer to section Regeneration se-
quence [}7 - 17].
11.5.1 Cancellation or power failure
The following table indicates the possible actions after cancelling a regeneration process
or after a power failure occurred during a regeneration process.
Case Interruption To do
1 Failure after regeneration gas
check
► Skip ahead to step8.
ð Evacuation and refill cycles are
shortened (total 20min).
2 Cancellation during step3
through 7
► Skip ahead to step8.
ð Evacuation and refill cycles remain (en-
sure sufficient reactor cooling regard-
less of the elapsed heating time).
3 Power failure during step3
through 7
Once power is restored, regeneration con-
tinues from step 3. This means that the en-
tire regeneration heat-up phase is re-
peated.
4 Power failure during step5
through 16
Once power is restored, regeneration con-
tinues precisely where it was interrupted at
exactly the point of interruption (there is no
return to the start of the current step).
11.5.2 Regeneration of an LMF
The regeneration programme can only be cancelled during step1 (without the "Cancel
yes / no" security question).
After cancellation, the sequence skips ahead the last step, since no evacuation / refill
cycles are necessary (for N
2
).
11.6 Leak test
A leak test must be performed on the system:
¡ After recommissioning
¡ After unexplained increase of the O
2
content in the glovebox or enclosure
¡ If an unexplained pressure increase/drop in the glovebox or enclosure occurs
A leak test can be performed by MBRAUN Service.
MBRAUN offers training to qualify personnel to perform leak tests.
► Contact MBRAUN Service for assistance.