INFICON Compass Refrigerant Leak Detector - Manual (Page 5)

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The INFICON Compass Refrigerant Leak Detector provides similar responses to all CFC’s
(e.g., R-12), HCFC's (e.g., R-22), HFC's and refrigerant blends (e.g., R-134A, R-404A, R407C,
R-410A) as well as SF6. There is no need to change settings for the refrigerant you're working
with.
The Compass has two sensitivity settings: HIGH and LOW. The sensitivity indicators are
located on the upper right hand face of the instrument. LOW is eight (8) times less sensitive
than HIGH sensitivity. You will know what the instrument is set to by looking at the indicators on
the face of the instrument to see which one is illuminated. The Compass is automatically set to
HIGH sensitivity when powered on. If you would like to set the Compass to LOW sensitivity,
press the control button quickly. The LOW sensitivity indicator will illuminate. To return to HIGH
sensitivity, depress the control button again, and the HIGH sensitivity indicator will illuminate.
Headphones may be used with the Compass Refrigerant Leak Detector. When the headphones
are plugged into the detector, audio will only be heard through the headset.
Finding Leaks
1. Place the tip of the leak detector probe as close as possible to the site of the suspected leak.
Try to pass the probe within 1/4 inch of the possible leak source.
2. Slowly (approximately 1-2 inches per second) move the probe past each possible leak point.
NOTE: It is important to move the tip of the probe past the leak to get a correct reading.
The Compass only responds to changes in concentration of the refrigerant from
the leak. Moving the probe permits the instrument to respond properly to these
changes.
3. When the instrument detects a leak, its yellow LEDs will illuminate and it will begin to beep
rapidly.
4. When the Compass signals a leak, pull the probe away from the leak for a moment, then
bring it back to pinpoint the location.
5. If the concentration of the refrigerant gas is high, set the sensitivity to LOW before
repositioning the probe at the suspected leak source. The LOW sensitivity setting helps find
the exact site when a leak is large. To adjust the sensitivity, quickly depress the control
button on the leak detector and the LOW sensitivity indicator will illuminate. Continue leak
checking.
6. Once you have isolated the leak source, return the sensitivity setting to HIGH by pressing
the control button once again.
7. When you've finished leak-testing, turn OFF the instrument by pressing the main button for
one second.
8. Store your INFICON Compass in the supplied storage case when not in use.