Head
44
⏐
GA10218_0101 - 5/2002
5.3 Display in stand-by mode
In stand by mode the conditions are shown in the upper edge of the dis-
play (see Chapter
5.4.3
). Furthermore calibration (Please refer to Chapter
7
) can also be started in stand by mode and purging, too (see Chapter
5.3.1
)
5.3.1 Gas Ballast/Purge
In stand-by mode the gas ballast of the fore pump can be switched on/off
manually or via softkey 7. The gas ballast is for abolishing a too huge
helium background. Additionally a condensation of water vapour in the
pump will be avoided. After 20 minutes the machine closes the gas ballast
valve automatically to limit the loss of oil.
This function can be chosen automatically for the PhoeniXL300 dry and
PhoeniXL300 Modul. Every time the unit changes into stand-by mode it
can start automatically after 20 seconds. During this purge the membrane
or sroll pump will be purged by the valve V6.
Attention
In case there was a large quantum of water vapor pumped with
the machine please activate the gas ballast for about 20 minutes
before running the machine down.
5.4 The Screen in Measurement
Mode
In measurement mode the leak rates can be displayed in two different
modes:
Numerically, combined with a bargraph Fig. 14
As trend: numerically, combined with a diagram (leak rate versus time)
Fig. 15
In the lower right corner of the display (next to the Soft Key no. 8,
Fig. 14
and
Fig. 15
) you will find a symbol that allows to switch between the dis-
play modes by pressing Soft Key no. 8. See chapter
5.4.4
and
5.4.5
for
explanations of the different display modes.
Access to calibration (Soft Key no. 5,
Fig. 14
and
Fig. 15
) and access to
the speaker volume (Soft Keys no. 2 and no. 3,
Fig. 14
and
Fig. 15
) is the
same in all modes. Also the status icons in the upper line are in common
in both display modes.
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