© MAHLE
18 | ACX2120H | A/C system service
en
9.
A/C system service
9.1
Automatic cycles
t
Access to automatic cycles is available through the main
menu by selecting
“AUTOMATIC CYCLES”.
1.
To begin Automatic cycle setup, user must rst select whether
they would like to load the parameters used during the last A/C
service or select My database to load custom parameters previ -
ously saved by the technician.
Fig. 14:
Automatic cycle selection
2.
After the selection is made, a screen will appear showing the
data for the process (Fig. 15).
Fig. 15:
Parameter adjustment
t
The amount of refrigerant to be charged into the system and
the amount of refrigerant available in the internal cylinder are
listed in the top row of the screen. To adjust the charge amount,
highlight the value and press
§¨
to adjust the value higher or
lower. Press
to save selection and move to next parameter.
t
The second row displays the hose selection for the service.
To adjust the hose selection, highlight the current value and
press
§¨
to adjust. Press
to save selection and move to
next parameter. The following options are available:
—
HP only
—
LP only
—
HP and LP
—
HP(LP) - Injection through HP hose on the system low
pressur
t
Third row of information displays the vacuum time. To adjust
the vacuum time, highlight the value and press
. Adjust
vacuum time by using
§¨
to change value then press
.
Adjust vacuum test time using the same method. Press
to
save selection and move to next parameter.
3.
After the parameters are adjusted, press
ª
to select and
START
to begin the Automatic cycle. (Or press
ª
a
second time to select and
SAVE
to save the cycle
information to My Database.)
4.
A screen will then appear to adjust the vehicle's compressor
type (Fig. 16). Use
§¨
to change between
ELECTRIC
and
MECHANICAL
compressor type, press
ª
to select
CON
-
TINUE
, then press
.
Fig. 16:
Compressor type selection
5.
If the selected type is Electric (high voltage), a special
procedure will be executed to clear any potential oil residue in
hoses from previous services. The screen in Fig. 17 will appear
and the hoses should be connected as illustrated in Fig. 18.
Fig. 17:
Electric compressor function
Fig. 18:
Flush adaptor connection
6.
After the connection is made,
YES
(by pressing
) to
proceed and follow instructions displayed on screen.
