Quick Mode And Zero Tolerance Charge Mode; Automatic Cycle; Automatic Cycle Data Loading; Database - MAHLE ACX150 Manuel D'utilisation

10.3 Quick mode and zero
tolerance charge mode
ACX150/250 can apply two different
refrigerant charge modes; the first one is
called Quick mode and features the
opening of the charge valve by charging
refrigerant through the HP port. By the
Quick Mode part of the refrigerant
remains into the
compensated by software calculation.
Whenever the charge is not completed
the UNIT shifts automatically to the Zero
Tolerance mode.
The Zero Tolerance function is the
second charge procedure, an alternative
to the Quick Mode.
It features a more accurate charge and
guarantees a successful
however requires a longer time and the
operator's intervention).
If the car A/C system is equipped with
both couplers or with LP coupler only,
there are two slightly different working
modes; in any case if only the HP coupler
is available the Zero Tolerance mode is
not applicable.
With both HP and LP couplers available
the Zero Tolerance features the charge of
the selected refrigerant amount into the
system through the HP hose; then
refrigerant remained into the HP hose is
sucked by the car system – engine and
compressor running – through LP (after
disconnecting and
coupler).
In case the LP coupler only is available
the station charges the system with 50%
of the selected
compressor off and waits for 10 minutes
before recalling the operator. This wait
time – quite rare since most of cars are
equipped with HP coupler too – allows
the refrigerant
hoses and
charge
closing the HP
amount with car
charged near the
EN | 22 | ACX150/250 | Automatic cycle
compressor – that is LP side – to
evaporate to prevent any damage to the
compressor during the admission of liquid
phase refrigerant. Then, after car and A/C
system switch ON charge continues
through timed
through hose LP, such charges start
exclusively if the LP pressure is lower
than 3 bar (this threshold is adjustable).
is

11 Automatic cycle

The access to Automatic cycle can be
achieved selecting Database, Last Cycle
or My
automatic cycle) .
11.1 Automatic cycle data
(it
loading

11.1.1 Database

MAHLE offers
ACX150/250 the possibility of enhancing
potentials of the UNIT through the
database.
This database contains all data related to
the A/C system of most vehicles. Hence,
it will be possible to speed up the charge
operations of the system with the aid of
the data provided by the database.

Make

Model

Version / engine capacity

Year

System

11.1.2 Last cycle

It loads the parameters of the last
automatic cycle.
charge of
database (a 100
customers
refrigerant
personal
purchasing
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