User Guide

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When the charge is complete the display will prompt you to run the AC system operational
check.
Press the DONE button to return to the main menu. Use the DISPLAY function to perform the
operational check. When the operational check has been completed disconnect the service
hoses from the vehicle and recover the refrigerant trapped in the hoses.
MANUAL NCG CHECK PROCEDURE
The MANUAL NCG CHECK is designed to allow you to check for and purge non-condensable
gas (AIR) after the refrigerant has had time to settle and reach ambient temperature. The tank
vapor valve must be open to perform this check. When this procedure is selected the LCD
screen will display the following information. Press the DONE button after opening the tank
vapor valve.
The following screen will be displayed.
If NCG is NOT detected, the screen will display refrigerant OK after the check. Push the exit
button to return to the main menu.
If NCG is detected, the following screen will be displayed.
Amount Charged _____lbs _____oz
Close tank liquid valve
Charge Complete
Check AC system operation
DONE
NCG CHECK
OPEN TANK VAPOR VALVE
TANK PRESSURE
TARGET PRESSURE
SYS TEMP
TIME
Amount Charged _____lbs _____oz
LOW ____ HIGH ____
DONE
GO EXIT
HOLD
TANK PRESSURE
TARGET PRESSURE
SYS TEMP