Owner's Manual

Tru Pointe
Instruction 0019-9328
11
•Alwaysfollowtherefrigerantsystemaroundinacontinuouspathso
that no areas of potential leaks are missed. If a leak is found, always
continue to test the remainder of the system.
•Ateachareachecked,theprobeshallbemovedaroundthelocation,at
aratenomorethan25to50mm/sec(1to2in./sec),andnomorethan
5mm(0.2inch)fromthesurfacecompletelyaroundtheposition.Slower
and closer movement of the probe greatly improves the likelihood of
ndingaleak.
•Anapparentleakshallbeveriedatleastoncebyblowingshopairinto
the area of the suspected leak, if necessary, and repeating the check of
the area. In cases of very large leaks, blowing out the area with shop air
oftenhelpslocatetheexactpositionoftheleak.
•Leaktestingoftheevaporatorcorewhileintheairconditioningmodule
shall be accomplished by turning the air conditioning blower on high for
aperiodof15secondsminimum,shuttingitoff,thenwaitinganaddi-
tional15secondsminimumfortherefrigeranttoaccumulateinthecase,
then inserting the leak detector probe into the blower resistor block or
condensate drain hole if no water is present, or into the closest opening
in the heating/ventilation/air conditioning case to the evaporator, such
as the heater duct or a vent duct. If the detector activates, a leak appar-
ently has been found.
•Followinganyservicetotherefrigerantsystemofthevehicle,andany
other service which disturbs the refrigerant system, a leak test of the
repair and of the service ports of the refrigerant system shall be done.
Operation