TIF IR-1 Infrared Refrigerant Leak Detector - Manual (Page 5)

Mute Button
Press the MUTE button to toggle the audio portion of the IR-1 ON
or OFF.
Peak Button
The PEAK function stores the highest change in refrigerant
concentration achieved while continuing to detect leaks. Press
the PEAK button to toggle this function ON and OFF. The PEAK
LED illuminates when this function is turned on. Turning the PEAK
function off clears the peak information.
Contaminate Mode
To detect even the smallest leak in refrigerant-contaminated
environments, press the PEAK button rapidly four times. The
green LED will flash rapidly to show contamination mode is
on. Press the PEAK button rapidly four times again to turn
contamination mode off.
Leak Detection Procedure
1. Press and hold the ON/OFF button for one second. The warm-
up and calibration sequence takes approximately 30 seconds.
The sensitivity level defaults to High at startup.
2. The most likely place for a refrigerant leak is at soldered joints
in refrigerant lines and changes in cross section or direction
of these lines. The IR-1 detects changes in concentration
of refrigerant, not the absolute concentration of refrigerant.
This allows the detection of leaks in locations that may have
refrigerant in the air. Use the following “double pass” method
to find leaks from the detection of change in refrigerant
concentration:
A. Hold the IR-1 in one hand and, with your other hand, guide
the tip of the wand to within 3/8 in. of the refrigerant lines.
B. Move the tip along the refrigerant lines at a rate of no
greater than three inches per second.
C. When the IR-1 indicates a change in concentration, note
that spot on the line, but keep the tip moving past the
potential leak to refresh the air space within the IR-1 with
clean air.