Snap-On ECO DUAL GAS Manuel D'instructions page 35

At the end of this phase, the machine will test for leaks in the A/C system:
(WARNING! If vacuum time < 15 minutes this test is not reliable). If leaks are found, the
machine will stop automatically and display the A/C SYSTEM LEAKS alarm.
Detection of micro-leaks is not guaranteed.
Upon completion of the vacuum phase, new oil will be automatically reintegrated: the volume
will be equal to that of the used oil discharged or to the volume set by the operator.
When completed, the system will go on to charging with the preset quantity of refrigerant.
Then the following screen will be displayed.
INSTRUCTIONS MANUAL
VACUUM
1:37 min
VACUUM
A/C pressure
-0.99 bar
VACUUM
0:51 min
CHECK LEAKS
A/C pressure
-0.99 bar
35
DD/MM/YY XX:XX PM
STOP
DD/MM/YY XX:XX PM
STOP