MasterCool 69789-220 Manuel D'instructions page 14

At this stage the system is running normally and the high and low pressures can be checked by
reading them off the relevant pressure gauges. Press STOP to exit.
Only disconnect the high pressure rapid coupling (if necessary switch off the engine) and press
START:
Start the A/C system, open the high and low pressure taps and make the A/C system suction
the refrigerant left in the pipes. Press START to continue:
Wait until the high and low pressures balance out, after about 1 min disconnect the machine's
low pressure rapid coupling on the vehicle's A/C system and switch off the engine.
Press STOP to complete the procedure.
Turn the main switch (I) to the 0 position.
NB – The automatic procedure can be run even if the A/C system is empty. In this case the
machine begins the vacuum operation immediately. In the case of an A/C system with a single
high pressure rapid coupling set the filling quantity at +100 g (quantity that can remain in the
high pressure pipe because in this case it is not possible to suction up the refrigerant left in the
pipes).
NOTE: If STOP is pressed during recovery, the following screen will be displayed:
When START is pressed the procedure resumes, whereas when STOP or RESET is pressed
you go back to the MAIN MENU.
INSTRUCTIONS MANUAL
CHECK PRESSURES
STOP to exit
Disconnect HP coupling
Press START to empty the
pipes
Open HP and LP taps
Start A/C system
Press START to continue
Wait for HP and LP to
Balance and close the
rapid couplings
STOP per completare
Procedure paused.
START to continue
STOP to abort procedure
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