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Programming and Operation
3-16
P/N 8040406
C
HELIX TECHNOLOGY CORPORATION
-
TI
CRYOGENICS
Repurge Cycles
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.
Figure 3-18: Repurge Cycles Display
Base Pressure
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.
Figure 3-19: Base Pressure Display
Last
Next
Clear
MONITOR
REGEN
SERVICE
CONTROL
RELAYS
HELP
oo
ON
-BOARD
®
Enter
1
2
3
4
5
6
7
8
9
-
0
.
20 REPURGE CYCLES
Last
Next
Clear
MONITOR
REGEN
SERVICE
CONTROL
RELAYS
HELP
oo
ON
-BOARD
®
Enter
1
2
3
4
5
6
7
8
9
-
0
.
50µ BASE PRESSURE