Справочник Пользователя для MAC Tools Refrigerator ACL2500
2. Take care not to contaminate the detector probe tip if the part being tested is
contaminated. If the part is particularly dirty, or condensate (moisture) is present,
it should be wiped off with a dry shop towel or blown off with shop air. No clean-
ers or solvents should be used, since the detector may be sensitive to their
ingredients.
it should be wiped off with a dry shop towel or blown off with shop air. No clean-
ers or solvents should be used, since the detector may be sensitive to their
ingredients.
3. Visually trace the entire refrigerant system, and look for signs of air conditioning
lubricant leakage, damage, and corrosion on all lines, hoses, and components.
Each questionable area should be carefully checked with the detector probe, as
well as all fittings, hose to line couplings, refrigerant controls, service ports with
caps in place, brazed or welded areas, and areas around attachment points and
hold-downs on lines and components.
Each questionable area should be carefully checked with the detector probe, as
well as all fittings, hose to line couplings, refrigerant controls, service ports with
caps in place, brazed or welded areas, and areas around attachment points and
hold-downs on lines and components.
4. 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.
remainder of the system.
5. At each area checked, the probe should be moved around the location, at a rate
no more than 25 to 50 mm/second (1-2 in/second), and no more than 5 mm (1/4
in) from the surface, completely around the position. Slower and closer move-
ment of the probe greatly improves the likelihood of finding a leak (see fig. 7).
Any increase in beep rate is indicative of a leak.
in) from the surface, completely around the position. Slower and closer move-
ment of the probe greatly improves the likelihood of finding a leak (see fig. 7).
Any increase in beep rate is indicative of a leak.
6. An apparent leak shall be verified at least once as follows:
a) Blow shop air into the area of the suspected leak, if necessary, and repeat 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.
air often helps locate the exact position of the leak.
b) First move the probe to fresh air and reset. Then hold the probe tip a close as
possible to the indicated leak source and slowly move around it until the leak is
confirmed.
confirmed.
Automotive A/C Systems only -
7. Leak testing of the evaporator core while in the air conditioning module shall be
7. 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 for the refrigerant to accumulate in
the case for 10 minutes.
seconds minimum, shutting it off, then waiting for the refrigerant to accumulate in
the case for 10 minutes.
After such time, insert the leak detector probe into the blower resistor block or con-
densate 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 alarms, a leak apparently has been found.
densate 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 alarms, a leak apparently has been found.
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