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6 OPERATING PROCEDURES
28
Parameters Screens
•
Test Timer (sec) – Entered desired gas sampling time. Minimum time is 10
seconds and maximum is 300 seconds.
•
Test % Helium – This is the default or typical helium concentration % that is
measured.
•
% Helium Tolerance Range – This range helps the customer determine if their
gas sampling is in or out of their desired range. For example, if a customer is
measuring 50% helium concentration with a tolerance of 2% the system can
warn if the measured gas mixture is not between 48-52%.
•
Warning Out of Tolerance – When selected this option allows a screen
warning text to appear on the test screen during testing if the measured
mixture is out of tolerance.
•
Perform internal calibrations on all non-Alcatel leak detectors at least monthly
and preferably weekly.
•
Ensure the leak rate on the test screen matches that of the leak detector
output.
•
Ensure leak detector is on for at least 15 minutes before testing.
•
Change backing pump oil regularly.
•
Ensure leak detector is serviced regularly, whether by LACO or in-house.
•
Ensure leak detector is not in zero mode when in test.
•
If the leak detector is a TITANTEST there are three modes in the TITANTEST:
Vacuum, Auto Test, and Sniff. Ensure the leak detector is always set to
Vacuum test mode.
LHCT03D & LHCT03D-R Operations and Maintenance Manual
LACO Technologies
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