Infrared Refrigerant Leak Detector
17
the detection of leaking locations possible with the
refrigerant in the air. Use the following “
double
pass
” procedure to find leaks by detecting the
change in refrigerant concentration.
(A)Charge the system with sufficient refrigerant.
Turn the system on and force compressor to
operate. This could set the high pressure end
of the circulation ring to its operating pressure.
Turn the system off for safer test operation and
less interference.
(B)Visually trace the entire refrigerant system, and
look for signs of air conditioning lubricant
leakage, damage, and corrosion on all lines,
hoses, and components. Check each
questionable area with the detector probe, as
well as all fittings, hose-to-line couplings,
refrigerant controls, service valves with caps in
place, brazed or welded areas, and areas
around attachment points and hold-downs on
lines and components. During this larger
leakage finding process at present operating
sensitivity range, please switch to the lower
sensitivity range.
(C)Always go through the complete refrigerant
circulation path so that no areas of potential
leaks are missed. If one leakage is found,
