Repurge Cycles; Base Pressure - HELIX CTI-CRYOGENICS On-Board FastRegen Programming And Operation Instructions

Programming and Operation

Repurge Cycles

Base Pressure

3-16
The seventh parameter of the REGEN function allows the user to deter-
mine the number of repurge cycles that are performed during a Full regen-
eration if the pump fails to rough out to the user determined base pressure
as shown in Figure 3-18. Regeneration is aborted after this limit is
reached.
20 REPURGE CYCLES
Last
1 3
2
Next
6
4 5
Clear
7 8 9
- 0 .
Figure 3-18: Repurge Cycles Display
The eighth parameter of the REGEN function allows you to establish the
base pressure to be reached when roughing a cryopump during either a Fast
or Full regeneration. The Base Pressure display is shown in Figure 3-19.
50 µ B ASE PRESSURE
Last
3
1 2
Next
4 5 6
Clear
7 8 9
- 0 .
Figure 3-19: Base Pressure Display
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