TIF ZX Heated Pentode Refrigerant Detector - Manual (Page 12)

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5 . Begin searching for leaks . Move the probe tip toward the suspected leak . The
flexible probe may be shaped to provide access to hard-to-reach areas .
NOTE: If the unit has previously been in service, verify the probe tip is not
obstructed with dirt, grease, etc., and check the condition of the filter as described
in the Maintenance section.
6 . If a refrigerant is detected, the unit will begin to alarm – the audible tone will quicken
and the LEDs will light . The larger the detected concentration, the greater the alarm .
The LEDs provide a proportional indication of concentration:
• Green – small concentration
• Orange – moderate concentration
• Red – large concentration
NOTE: The unit is not a measuring tool; it is a proportional detector. The LEDs do not
indicate a specific leak rate or concentration.
7 . If an alarm occurs before the leak source is pinpointed, the Reset Key may be used
to pinpoint the leak, as described in the Operating Features section . The unit may
be reset as many times as necessary to pinpoint the leak source .
NOTE: Due to the high sensitivity of the instrument, it is possible it will detect the
presence of high intensity electromagnetic fields.
The following section includes several general operating tips, and the SAE J1628
recommended procedure for leak detection .
leaK Detection techniQues
1 . Before each use, inspect the probe tip and filter element as described in the
Maintenance section .
2 . Be aware that refrigerants are invariably heavier than air and will tend to fall from,
or collect below, actual leak points/sources . Searching below areas of potential
leaks is the most effective and reliable method of detection .
3 . In areas that are heavily contaminated with refrigerant, the unit may be reset to
block out ambient concentrations of gas . The probe should not be moved while the
unit is being reset . The unit may be reset as many times as needed .
oPeRatinG tiPs