Snap-On ECO DUAL GAS Manuel D'instructions page 75

Press YES to confirm:
With LP coupling connected turn on the vehicle's engine and A/C system, then press ENTER:
The vehicle's A/C system will recover the refrigerant from the service hoses, then:
Turn off engine and A/C system, unscrew LP coupling without disconnect it, then press
ENTER:
INSTRUCTIONS MANUAL
A/C PRESSURE CHECK
Are you sure that you
have unscrewed and disconnected
the HP coupling?
YES
A/C PRESSURE CHECK
With LP coupling connected turn on
vehicle's engine and A/C system
then press ENTER
DD/MM/YY XX:XX PM
Please wait...
55 sec
A/C PRESSURE - 0,0 bar
A/C PRESSURE CHECK
Turn off engine and A/C system
Unscrew and disconnect
the LP coupling
Then press ENTER
75
DD/MM/YY XX:XX PM
NO
DD/MM/YY XX:XX PM
ENTER
DD/MM/YY XX:XX PM
SAVE
DD/MM/YY XX:XX PM
ENTER