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R1234yf
A/C Pressure
At the end of this phase, the machine will test for leaks in the A/C
system:
R1234yf
A/C Pressure
CHECK LEAKS
VACUUM TEST
(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.
NOTE: The air purge is made automatically during the vacuum
phase, or when the machine is in stand by for 3 minutes always
automatically.
However air purge can always be made at any time manually by
the AIR PURGE MANUAL selection from MAINTENANCE menu.
Upon completion of the vacuum phase, the system will go on to
pre-charge test, the following screen will be displayed:
R1234yf
HVAC blower motor on low,
A/C switched off, air distribution
mode set to "floor".
PRE-CHARGE TEST
Set HVAC blower motor on low, A/C switched off, air distribution
mode set to "floor", then press ENTER to continue:
R1234yf
Put a SAE J2913 compliant
leak detector set to
high-maximum sensitivity (4g/year)
into the center of a
floor duct outlet, as far as
PRE-CHARGE TEST
AUTOMATIC PROCEDURE
inHg
VACUUM
AUTOMATIC PROCEDURE
inHg
AUTOMATIC PROCEDURE
AUTOMATIC PROCEDURE
possible
Put a SAE J2913 compliant leak detector set to high-maximum
sensitivity (4g/year) into the center of a floor duct outlet, as far as
possible, then press ENTER to continue:
R1234yf
Was this test performed?
A pop-up message is displayed asking confirmation, press YES to
continue:
R1234yf
Press NO if no leak was found, the following screen will be
displayed:
R1234yf
Select YES to perform a leak check on the auxiliare evaporator:
R1234yf
Put the leak detector on
Put the leak detector on rear evaporator outlet and search for
leaks, then press ENTER to continue:
• 27 •
AUTOMATIC PROCEDURE
YES
NO
PRE-CHARGE TEST
AUTOMATIC PROCEDURE
Was a leak found?
YES
NO
PRE-CHARGE TEST
AUTOMATIC PROCEDURE
Is there an auxiliary
evaporator?
YES
NO
PRE-CHARGE TEST
AUTOMATIC PROCEDURE
rear evaporator outlet
and search for leaks
PRE-CHARGE TEST
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