Inficon ULTRATEST UL3000 Fab, Translation Of The Original Operating Instructions

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6 | Operation INFICON
68 / 140 UL3000-Fab-Operating-instructions-iina73en1-08-(1910)
“Vacuum” operation
mode, “HYDRO•S” is
switched on, effect on
ZERO
When you press the ZERO button, the current leak rate value is set to the lower
display limit.
Note: The ZERO button should not be pressed when there is a rapidly falling
background, otherwise, when compared to the background change, small leak rate
signals may be incorrectly hidden.
Operation mode “Sniff”,
effect on ZERO
When you press the ZERO button, the current leak rate value is set to the lower
display limit.
6.3.11 Vent, purge, regenerate
Vent In measuring mode, you use this function to vent the inlet of the device and a test
specimen connected to it after a measurement. Without the suction effect of the
vacuum, a test specimen can be easily changed.
Under "Vent mode" you have the choice between "Immediate", "No ventilation" and "
Manual”. If "Immediate" is activated, the ventilation is triggered when changing to
Standby. If “manually” is activated, the ventilation is activated after a longer press on
the button STOP or by pressing at in the window “Standby“. See also "Switching
on [
}
47]".
ü
Operator or Supervisor rights
1
> Setup > Measurement > Vacuum > Vent
2
Set up.
3
Save .
Purge By activating the flushing function (with dry backing pumps), a small gas flow is let into
the backing pump in the "standby" state. The function may be useful to remove
condensed water vapor from the pump chamber of the backing pump or to reduce the
helium background.
WARNING
Risk of suffocation due to nitrogen or argon as purge gas
The use of nitrogen or argon as purge gas may cause suffocation at high
concentrations in indoor air.
► Take precautions to avoid high concentrations of these gases in enclosed spaces.
You can automatically purge the backing pump for 20 seconds when you change to
"Standby".
ü Operator or Supervisor rights
1 > Setup > Measurement > Vacuum > Purge