User Manual

Operating Procedures

When the correct setting of local elevation has been achieved, allow the instrument to

sit for 20 seconds while not pushing either of the buttons. The instrument automati-

cally returns to the warm-up period, and the elevation setting is stored in memory.

5. After completion of the warm-up period, the instrument self-calibrates. Ambient air is

drawn in through the air intake port and is presented to the sensing device for calibra-

tion. The calibration period runs for 20 seconds.

6. When the calibration period is completed, the instrument displays READY:

CON.HOSE, PRESS A TO START, and the green LED flashes. Connect the service

end of the sample hose to the low side or vapor port of the refrigerant storage vessel or

vehicle air conditioning system to be sampled. When the hose is secured into position,

press the “A” button of the instrument to start processing. NOTE: For correct opera-

tion, the instrument pressure gauge should read at least 10 psig.

Tech Tip: To achieve the best air detection accuracy, allow the instrument to warm-up

an additional 5 minutes before pressing the “A” button as stated in Step 5. This allows

additional warming and stabilization of the sensing device before sampling. During the

additional warm-up period, the instrument will “Time-Out” and display RECAL.

Disconnect the sample hose from the refrigerant source, and press the “A” button to

re-calibrate. Once re-calibration is complete, it is not necessary to repeat additional

warm-up periods as long as the instrument is not powered down between sample runs.

7. The instrument reads SAMPLING IN PROGRESS while a small refrigerant sample is

analyzed to determine the concentrations of R-12, R-134a, R-22, hydrocarbons, and

air. Once analysis is complete, the percentage of concentrations of R-12, R-134a, R-22,

and hydrocarbons is displayed. You can press “A” to print the results, press “B” to exit

(if there is no air), or press “B” to continue the purge function if air is present.