6 OPERATION
LACO Technologies
TITAN VERSA Operations and Maintenance Manual
69
Ultra
0.5
0.5
Massive Mode
When Massive mode is enabled, it allows for gross leak testing in vacuum method
(typically Outside-In leak testing) using the Pirani vacuum gauge. If during pump down
the vacuum pressure settles between 25
–
100 mbar for greater than 10 seconds, the
unit will go into massive mode.
The test screen display will show Massive mode and display a non-quantitative bar
graph. The user can spray helium to help locate large leaks. Once the leak is fixed, the
pressure can go below 25 mbar and the test will go into full cycle.
Reject Limits
Reject Limits
Reject limits can be entered for either vacuum or sniff test methods. Rejects limit are
used throughout the unit in the following ways.
➔
On Test screens indicating Pass / Fail conditions (green indicates Pass, red
indicates Fail).
➔
Reject limits determine the audio signal level (if turned on) in relation to the
current leak rate.
➔
On the Test graph screen, the reject point is identified with a red line. When the
leak rate is above the reject limit, the graph line is red; the line is green when the
leak rate is below the reject limit.
