TIF ACL2500 Refrigerant Leak Detector - Manual (Page 9)

OPERATION:
1. Switch the unit on by pressing the ON/OFF key. The display will illuminate with
the reset indication (Left LED green, all others Orange) for 2 seconds.
2. Verify the battery level by observing the constant power indicator (see above).
3. Upon turn on, the unit is set to sensitivity level 5. A rapid, but steady beep rate
will be heard. If desired, the sensitivity can be adjusted by pressing the SENSI-
TIVITY
a or SENSITIVITY b key, as described above.
4. Begin searching for leaks. When refrigerant is detected, the audible tone will
change to a ‘siren’ type sound, distinctly different from the base beep rate.
Additionally, the visual indicators will light progressively as described in the
Alarm Indications section.
5. Sensitivity can be adjusted at any time during operation by using the SENSITIV-
ITY
a or SENSITIVITY b key. This adjustment will not interrupt detection.
6. If a full alarm occurs before the leak is pinpointed, press the RESET key to
reset the circuit to a zero reference as described above.
The following section includes several general operating tips, and the SAE
J1628 recommended procedure for leak detection.
1. Adjust the sensitivity up, only when a leak cannot be found. Adjust the sensitivity
down only when resetting the unit does not allow you to ‘home in’ on the leak.
2. In areas that are heavily contaminated with gas, the unit may be reset to block
out ambient concentrations of gas. The probe should not be moved while the
unit is being reset. The unit can be reset as many times as needed.
3. In windy areas, even a large leak can be difficult to find. Under these conditions,
it is best to shield the potential leak area.
4. Be aware that the detector may alarm if the sensing tip comes in contact with
moisture and/or solvents. Therefore, avoid contact with these when leak
checking.
SAE J1628 Recommended Procedure
NOTE: On Automotive A/C Systems leak test with the engine not in
operation.
1. The air conditioning or refrigeration system should be charged with sufficient
refrigerant to have a gauge pressure of at least 340 kPa (50 psi) when not in opera-
tion. At temperatures below 15° C (59° F), leaks may not be measurable, since this
pressure may not be reached.
7
OPERATING INSTRUCTIONS
OPERATING TIPS