TIF 5650A Halogen Leak Detector - Manual (Page 8)

OPERATING INSTRUCTIONS
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
b) First move the probe to fresh air and reset. Then hold the probe tip as close
as possible to the indicated leak source and slowly move around it until the
leak is confirmed. 5750A ONLY: Switch back to NORMAL (ON) mode for
reduced sensitivity if unable to pinpoint the leak.
Automotive A/C Systems only -
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.
After such time, insert 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 alarms a leak apparently has been found.
All Systems -
8. Following any service to the refrigerant system and any other service which dis-
turbs the refrigerant system, a leak test of the repair and of the service ports of
the refrigerant system should be done
1 .To reset, or automatically re-calibrate, you unit as described on page 4 follow
the instruction below for you particular model:
2. In areas that are heavily contaminated with gas the unit may be reset to block
out ambient contamination and pinpoint the leak.
The probe should not be moved while the unit is being reset. The unit can be
reset as many times as necessary to pinpoint the leak
3. In windy areas even a large leak can be extremely difficult to find because the
escaping gas is rapidly carried away from the leak source. Under these condi-
tions, it is often necessary to shield the potential leak area.
4. In situations where large leaks mask the presence of very small leaks the larger
leaks must be located and repaired first. Finding the small leaks will then
become a much easier task.
5. Be aware that the detector may alarm if the probe tip comes in contact with
moisture and/or solvents. Therefore avoid contact with these when leak checking.
OPERATING INSTRUCTIONS
OPERATING TIPS
6
5050A Switch the unit OFF, and back ON again
5550A Switch the unit OFF, and back ON again
5650A Depress the Blue RESET button on probe handle
5750A Depress the Blue RESET button on probe handle