MAHLE ACX150, Service Manual

Page: 17 / 202

EN | 16 | ACX150/250 | Maintenance
© MAHLE
Two kg is the minimum quantity that
should be always left in an operating
ACX150/250.
6.6 Air purge system
In the main menu select MAINTENANCE
and press “AIR PURGE SYSTEM”.
If the station detects non-condensable
gas in the tank, when it is necessary or
when not mandatory but accepted by the
user, it will automatically run the non-
condensable gas discharge procedure.
The procedure will take a few minutes,
and its duration may vary according to
the amount of non-condensable gas
within the tank.
6.7 Air purge
In the main menu select MAINTENANCE
and press “AIR PURGE”.
By selecting this function, you can check
the non condensable gas condition (high
level red area, low level green area ) and if
necessary you can start manually the
discharge.
6.8 Pressure zero
In the main menu select MAINTENANCE
and press “PRESSURE ZERO”.
This function allows to determine and
store the atmospheric pressure value.
We recommend running this procedure
every time the ACX150/250 will be moved
from a location to another with a different
altitude.
6.9 Counters
In the main menu select MAINTENANCE
and press “COUNTERS”.
In the COUNTERS page, at any time, the
vacuum pump and compressor hours of
life can be displayed; besides, remaining
time before replacement of vacuum pump
oil and dryer filter can also be displayed.
This is useful to understand if some
maintenance activity should be performed.
6.10 E³ PUMP - vacuum
pump oil change
The ACX150/250 is equipped with a
special function named E³ PUMP that
enables to optimize the vacuum pump oil
use by avoiding the replacement every 60
hours of operation.
E³ PUMP is a special function allowing to
extend even to 1000 hours the life of the
pump oil used in the station.
E³ PUMP function performance is
suggested at the end of 60-hour
operation intervals of the vacuum pump
and can be manually activated in the
MAINTENANCE menu pressing E³ PUMP.
E³ PUMP procedure has to be started
only after checking and, if necessary,
topping up the pump oil level and lasts 1
hour: during this time the tool cannot be
used.
During the procedure the oil is
automatically purified from the gaseous
polluting residues absorbed during the
emptying operations of vehicles air
conditioning systems.
At the end of the procedure, the vacuum
pump performance check is carried out
and a result to the operator is signalled. In
case of negative result you have to
replace the vacuum pump oil.
After 1000 hours of vacuum pump
operation since the last oil change, the E³
PUMP procedure cannot be activated
anymore and you have to replace the oil
according to the following instructions.