LACO ORIGINAL OPERATING INSTRUCTIONS TITANTEST™
46
© 2018 LACO TECHNOLOGIES, INC. - [TitanTest itna01en1-07 BA.fm] - 1807
You can stop the background cleanup by pressing "START/STOP" or pressing
"STOP" in the "Background cleanup" menu.
An active background cleanup is indicated on the display.
The background cleanup stops automatically after 60 minutes.
Pressing "Start" starts the following sequence:
Start, Stop with Venting
Start, Stop with Venting,
etc.
► Select " Setup > Test settings > Evacuation time & Vent > Background
cleanup".
This menu item is only available in the operating mode "Vacuum".
or
► in the "Standby" window the menu "Utilities > Background cleanup".
This menu item is only available in the operating mode "Vacuum".
With background cleanup, the same steps are carried out as in a burn-in load
test without calibration (see Chapter : "Burn-in", page 64).
6.4.5 Set gross leak protection
If gross leak protection is activated, the TITANTEST™ closes all inlet valves as
soon as the measured leakage rate exceeds the limit value. This way, only a
minor amount of helium will enter the mass spectrometer, preventing the
device from becoming contaminated by helium.
An external pump can pump down helium that has entered the test object.
If there is no external pump available, vent the test object prior to the next
measurement.
Gross leak protection is activated at the earliest once the alarm delay time
elapses (see Chapter 6.4.7: "Set the setpoint and alarm", page 47).
► To view or change presets, select " Setup > Test settings > Gross leak
protection".
Table 24: Gross leak protection settings
Option Value range
(Min. Max.)
Comment
Protection On Gross leak protection is switched on
Off Gross leak protection is switched off
Limit val-
ue
1E-9 ... 1E+3 mbar*l/s Switch-off limit value for the gross leak protection function
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