MAHLE ACX380 User manual

MAHLE
ACX380/480
EN
Service
Manual
A/C Service Equipment

en
2
|ACX380/480
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Contents
1 General instructions ....................................... 3
1.1 General notes .......................................... 3
1.2 General instructions ................................ 3
1.3 Manufacturer identification...................... 3
1.4 Environmental precautions ...................... 3
2 Safety conditions ........................................... 3
2.1 ersonal safety information ..................... 3
2.1.1 Definitions ......................................................... 3
2.1.2 ersonal safety information .............................. 3
2.2 Important information on service
equipment safety .................................................... 5
2.3 Safety devices ......................................... 5
3 Layout of the manual ...................................... 5
3.1 Use of the manual ................................... 5
3.2 Symbols................................................... 6
3.2.1 Safety ............................................................... 6
3.3 Glossary .................................................. 6
3.4 Guidelines for the handling of refrigerant 6
3.4.1 recautions for refrigerant storage ................... 6
3.4.2 Conditions of refrigerant and system ............... 7
3.4.3 Recycling capacity ........................................... 7
4 roduct description ........................................ 7
4.1 Application .............................................. 7
4.2 Scope of delivery ..................................... 7
4.3 Description of the unit ............................. 7
4.4 User interface .......................................... 8
4.4.1 Main menu ........................................................ 9
4.5 E³ CONNECT quick couplers .................. 9
5 Technical features ........................................ 10
6 Installation.................................................... 11
6.1 Equipment installation ........................... 11
6.1.1 Unpacking ...................................................... 11
7 Commissioning............................................. 11
7.1 Connections .......................................... 11
7.1.1 ositioning and connection ............................ 11
7.2 Software update .................................... 12
7.3 Initial verification .................................... 12
7.4 New AG and OE oil bottles filling ...... 12
7.5 UV dye bottle filling ............................... 13
8 Setup ........................................................... 14
9 Service Menu ............................................ 15
9.1 Manual activations and analogue channel
view ............................................................... 15
9.2 ressures calibration (service kit) .............. 15
9.3 OOB ressures calibration (service kit) ...... 16
9.4 Gas weight calibration .............................. 16
9.5 Calibration check ..................................... 17
9.6 Oil weight calibration ................................ 17
9.7 Compressor and vacuum pump test ......... 17
9.8 Spare parts & consumables ...................... 17
10 Equipment and simulator ........................... 17
11 Refrigerant fluid circuit ............................ 17
11.1 Refrigerant fluid circuit ............................. 17
11.2 Operational cycles ................................... 18
11.3 Receiving tank (refrigerant cylinder) .......... 18
11.4 Manifold charts ....................................... 18
11.5 NITROGEN TEST and FORMING GAS
LEAK TEST - MANIFOLD ..................................... 20
11.6 Suction circuit components ...................... 21
12 Non -permanent junction .............................. 21
13 Electrical connections ............................. 21
14 Maintenance ............................................. 22
14.1 Maintenance interval ............................... 22
14.2 Hoses emptying ..................................... 23
14.3 Air purge ................................................ 23
14.4 Vessel filling ........................................... 23
14.5 ressures zero ....................................... 23
14.6 Self leak test .......................................... 23
14.7 E³ UM ................................................ 23
14.8 ump oil change .................................... 24
14.9 Dryer filter change ................................. 24
14.10 Replacement of Active Oil rotection
Cartridge .............................................................. 25
14.11 Calibration check ................................... 25
14.12 Maintenance of printer ........................... 25
14.13 eriodic checks ..................................... 26
14.14 Refrigerant type change (only for ACX 380)
.............................................................. 27
14.15 Air purge ................................................. 27
14.16 Counters ................................................ 27
14.17 Replacing white sample filter (Refrigerant
identification unit ).................................................... 27
15 Replacement interventions ........................... 28
15.1 Extraordinary maintenance list ................. 28
15.2 Extraordinary maintenance ...................... 28
15.2.1 Replacement of component connected
to refrigerant circuit ....................................................... 28
15.2.2 Replacement of logic electronic board with
display .................................................................... 29
15.2.3 Replacement of electronic power board .. 29
16 Spare and wearing parts .............................. 30
16.1 Refrigerant identification unit .................... 30
A ENDIX 1 – REFRIGERANT FLUID CIRCUIT
ACX380/480 ....................................................... 31
A ENDIX 2 – REFRIGERANT FLUID CIRCUIT
ACX380/480 O ERATIONAL CYCLES ............ 32
A ENDIX 3 – ACX380/480 - ELECTRICAL
CONNECTION – LOGIC ELECTRONIC BOARD
........................................................................... 36
A ENDIX 4 – ACX380/480 - ELECTRICAL
CONNECTION – OWER ELECTRONIC
BOARD AND OWER SU LY ....................... 37
A ENDIX 5 – ACX380/480 - ELECTRICAL
CONNECTION – STATUS AND WARNING
INDICATOR LIGHT ELECTRONIC BOARD ........ 39
A ENDIX 6 – TROUBLE SHOOTING .......................... 40
A ENDIX 7 – FAILURE LIST ACX380/480 .................. 41

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©MAHLE
1 General instructions
1.1 General notes
All rights reserved.
This manual may not be reproduced, in part or entirely,
either in printed or digital form.
It may be printed out solely for use by the user and
operators of the equipment to which it refers.
MAHLE and resources used for the drawing up of this
manual will not be held responsible for the incorrect use of
the manual while they guarantee that information in the
manual have been duly checked.
The product can be subject to changes and improvements.
MAHLE reserves the right to change without notice the
information contained in the manual.
1.2 General instructions
ressure equipment undergoes checks before
commissioning and periodical checks during operation, in
compliance with rules and law provisions in force in the
country where the tool is used.
The operator is responsible for operating the equipment in
conformity with local legislation.
Only for model ACX 380.
The equipment is designed for recovering and recycling
R1234yf/R134a refrigerant fluid from automotive A/C
system.
The equipment is intended to be used by automotive
and similar repair and service workshops.
The switch between the two refrigerant types, from
R134a to R1234yf, can only be performed by a
technician of an Authorised MAHLE Centre.
This equipment is intended solely for use by professionally
trained operators familiar with the basics of refrigeration,
refrigeration systems, refrigerants and the hazards
associated with pressurised equipment.
Careful reading of the present manual by the owners, the
users and the operators is required for a correct and safe
use of the tool.
The user shall not be entitled to open the product since
maintenance operations are reserved to the authorised
service centre.
1.3 Manufacturer identification
The ACX equipment is manufactured by:
MAHLE Aftermarket Italy S.p.A.
via Quasimodo 4/a, Italy
hone: [phone]
1.4 Environmental precautions
Any service operation with the equipment must be carried
out being careful not to disperse fluorinated gases (R134a)
into the environment, in order to prevent the greenhouse
effect and the subsequent global warming of the planet. The
release of refrigerant gas R134a into the atmosphere is
forbidden by laws that were enacted within the framework of the
Kyoto protocol.
For information only, we will mention in particular, for the European
Union, REGULATION (EU) No 517/2014 OF THE EURO EAN
ARLIAMENT AND OF THE COUNCIL of 16 April 2014 on
fluorinated greenhouse gases and repealing Regulation (EC) No
842/2006.
The waste coming from the service activities must be placed in
collection centres foreseen by the enforced laws, they must not be
dispersed in the environment and they must not be disposed of with
urban waste.
2 Safety conditions
2.1 Personal safety information
2.1.1 Definitions
DANGEROUS AREAS:
Any area within or close to the equipment implying risk for the safety
and health of exposed persons.
EX OSED ERSON:
Any person completely or partially standing in a dangerous area.
O ERATOR:
The person/s charged with operating the machine for its intended
purpose.
CLASSIFICATION OF O ERATORS
The operator can be classified according to two main categories,
which, in some cases, refer to one single person:
•The operator charged with the equipment operation has the
duty to:
oStart up and monitor the machine's automatic cycle;
oCarry out simple setting operations;
oRemove the causes of equipment stop not implying
breakings of members but simple operating anomalies.
•Maintenance technician a technician trained by an authorised
MAHLE centre, capable of working on the machine’s
mechanical and electrical components with its guards open to
make adjustments and to service and repair it.
USER
Body or person legally responsible for the equipment.
2.1.2 Personal safety information
The A/C service station is particularly simple and reliable due to its
adjustments and functions. When used correctly it presents no
hazard for the operator, provided he observes the following general
safety instructions and that the service station is regularly serviced
(incorrect maintenance/use compromise the equipment's safety).
Before operating the service station for the first time, read these
instructions carefully. If any part of the instructions is unclear,
contact your reseller or MAHLE.
This service station may be used by only one equipment operator,
familiar with A/C and refrigeration systems and the hazards
associated with refrigerants and high pressure equipment.

| ACX380/4850 | 4en
WORK LACE: The station can work with both R134a and
R1234yf (the two refrigerants cannot be stored within the
station at the same time).
Refrigerant R1234yf is defined as flammable refrigerant.
Nonetheless, although refrigerant R134a is not defined as
flammable, mixtures of air or oxygen with R134a may
become flammable under very particular conditions.
The equipment must be operated outdoor or in a well-
ventilated location (at least 1 air change per hour). The
workshop has to be equipped with ventilation systems
able to ensure air change in every environment area or
carry out periodical ventilation by opening the areas.
Use the equipment away from heat sources or hot
surfaces. The equipment must not be used in explosion risk
environments (potentially explosive atmospheres). Before
using it, put the equipment on a levelled plane and secure
position, blocking it with suitable wheel stops.
Do not expose the tool to direct sunrays, heat sources, rain
and jets of water. Do not smoke near the equipment and
during operations (keep at a distance of at least 1 m).
The work area must be monitored by the operator while the
equipment is operating.
ATTENTION: R134a and/or R1234yf refrigerant
fumes/gases are heavier than air and can gather on the floor
or inside cavities/holes and cause choke by reducing the
oxygen available for breathing.
At high temperatures, the refrigerant breaks down releasing
toxic and aggressive substances, harmful for the operator
and the environment. Avoid inhaling the system coolants
and oils. Exposure can irritate eyes and the respiratory tract.
ELECTRICAL CONNECTION: Connect the power cord
solely to a mains supply which conforms to the ratings on
the machine's nameplate (mounted on its side). Make sure
the mains socket is grounded.
Maximum impedance allowed in the point of connection to
the mains shall comply with standard EN 61000-3-11.
Starting currents can cause short voltage drops, which may
affect other equipments under unfavourable conditions. If
impedance in the point of connection to the mains is not
compliant, this may lead to interference so please consult
the electrical power network operator before connecting the
equipment.
Never use the service station with a defective power cord or
a different one from that supplied with the machine. If
damaged, immediately have it replaced with an original
spare part or equivalent by a MAHLE centre. Before
opening the service station, extract completely the supply
cable from the plug, or you can get an electric shock.
Do not tamper with or bypass the safety equipment and
settings.
Do not leave the machine powered up when not in use; shut
off the power supply before leaving the equipment unused
for a long time. Do not forget that the tool (pressure tool) must
always be protected.
REFRIGERANTS AND LUBRICANTS - ERSONAL SAFETY
EQUI MENT AND RECAUTIONS: The refrigerants and the
pressure cylinders have to be handled with care, otherwise there will
be possible health risks.
The operator must wear safety glasses, gloves and protective
clothing suitable to the work. Contact with the refrigerant can cause
blindness (eyes) and other physical damages (freezing) to the
operator. Avoid contact with the skin; the refrigerant's low boiling
point (approx. –26 °C for R134a and approx. -30 °C for R1234yf) can
cause freezing burns.
Further information about safety can be obtained from the safety
sheets of lubricant and refrigerant producers.
Do not inhale refrigerant or oil vapour. Keep away from the vent
valves and ventilation coupling, especially when non-condensable
gas is being vented.
Never direct the quick couplings (taps) towards your face or other
persons or animals.
OTHER ROHIBITIONS AND USE LIMITATIONS: Only use pure
R134a or R1234yf refrigerants, refrain from using on vehicles
containing other types of refrigerants or mixtures of the two
refrigerants or other refrigerants. Mixture with other types of
refrigerant produces serious damage to the conditioning and cooling
systems. Mixed refrigerants have to be disposed of according to
the current regulations. Never use ACX equipment with systems
containing compressed air; mixtures of R134a or R1234yf with air or
oxygen may be potentially flammable.
Do not modify calibration of safety devices. Do not remove seals of
safety valves and of control systems. Do not use external tanks or
other storage containers that are not type-approved or without
safety valves.
Make sure the equipment's aeration and ventilation ports are not
obstructed or covered while the equipment is operating.
HOSE CONNECTIONS: Hoses may contain pressurised refrigerant.
Before changing the service couplers, check the respective
pressures in the hoses (pressure gauge).
Before connection to a car A/C system, to an external tank/cylinder,
check that the quick couplers are closed (unscrewed H and L
valves).
Scrupulously follow the instructions on the equipment's display.

©MAHLE
QUICK COU LERS CLOSING/O ENING:
MAINTENANCE/GENERAL CLEANING:
The equipment
has to be serviced at the intervals indicated by the
equipment itself.
The service station maintenance has to be performed
according to
the procedures described in this manual and
to the current safety regulations.
Use only MAHLE original parts.
When the equipment requires the drier filter and the vacuum
pump oil to be changed, you have to be careful in the
replacement.
A/C service station
maintenance can be carried out
exclusively by a trained operator or by a service man of a
MAHLE certified seller.
Do not use chemical agents for the service station cleaning
as they could attack the material or the surface.
STO FOR LONG ERIOD: Stor
e the equipment in a safe
place, disconnected from the mains, away from excessive
temperatures, humidity and the risk of damaging impact.
Contact the Technical Service to run a safety shutdown of
the equipment, and if scrapping the unit, to drain and
recyc
le the R134a or R1234yf refrigerant as required by
local legislation.
To resume operation, repeat the installation (there is no
need to register the unit anew on the website) and run the
commissioning trials and regular operational checks as
required by local legislation.
2.2 Important information on service
equipment safety
When using the equipment, the following operations are not
allowed as they might cause, under certain circumstances,
danger for persons and cause permanent damage to the
equipment itself.
-
Do not remove or make unreadable labels,
signs and/or dangers signs placed on the
equipment and in the area nearby.
-
Do not disable the unit's safety equipment.
-
The electrical system to which the service
equipment is connected must be configured as
provided by local legislation.
Closing (detach from
the vehicle):
counter clockwise
Opening (connect to
the vehicle):
clockwise
The equipment
has to be serviced at the intervals indicated by the
The service station maintenance has to be performed
the procedures described in this manual and
When the equipment requires the drier filter and the vacuum
pump oil to be changed, you have to be careful in the
maintenance can be carried out
exclusively by a trained operator or by a service man of a
Do not use chemical agents for the service station cleaning
e the equipment in a safe
place, disconnected from the mains, away from excessive
temperatures, humidity and the risk of damaging impact.
Contact the Technical Service to run a safety shutdown of
the equipment, and if scrapping the unit, to drain and
le the R134a or R1234yf refrigerant as required by
To resume operation, repeat the installation (there is no
need to register the unit anew on the website) and run the
commissioning trials and regular operational checks as
When using the equipment, the following operations are not
allowed as they might cause, under certain circumstances,
danger for persons and cause permanent damage to the
Do not remove or make unreadable labels,
signs and/or dangers signs placed on the
Do not disable the unit's safety equipment.
The electrical system to which the service
equipment is connected must be configured as
-
Only operators or qualified staff instructed or
certified for the
equipment
open the equipment
. The equipment
parts which can cause electrocution: shut off
power to the equipment before
servicing/repairing it.
2.3 Safety devices
The A/C service station
is equipped with the following safety
devices:
SAFETY RESSURE SWITCH
in case of excessive pressure.
SAFETY VALVE:
The safety valve opens when the
pressure inside the system reaches a level higher than the
fixed limits.
MAIN SWITCH:
Switches the equipment off by
interrupting the power supply. It is advisable to pull the
power cord plug out of the mains socket in any case
before starting maintenance work.
ANY TAM ERING WITH THE ABOVE
SAFETY DEVICES IS ROHIBITED.
Failur
e to observe any of the above safety instructions voids the
equipment's warranty.
3
Layout of the manual
3.1 Use of the manual

This manual is an integral part of the equipment and
must be kept in the equipment's immediate vicinity by
the purchaser
•
This manual shall accompany the equipment in case this is
passed on to a new user.
•
The content of this manual has been drawn up in
compliance with the guide lines of the UNI standard
10893:2000.
•
Diffusion, modification or use of this manual for own aims is
forbidden.
•
The manual uses symbols which call the reader's attention
to specific points to facilitate its use.
•
It includes all technical, operating, shutdown, maintenance,
spare parts and safety information.
•
In case of doubts on the correct interpretation
instructions, please contact our technical service to obtain
the required clarifications.
Operations which are potentially hazardous for the
operator are highlighted with this symbol.
Such operations can cause serious injury.
Operations
requiring special attention are highlighted with
this symbol.
Such operations shall be carried out correctly to avoid
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Only operators or qualified staff instructed or
equipment
maintenance can
. The equipment
contains
parts which can cause electrocution: shut off
power to the equipment before
is equipped with the following safety
SAFETY RESSURE SWITCH
: It stops the compressor
The safety valve opens when the
pressure inside the system reaches a level higher than the
Switches the equipment off by
interrupting the power supply. It is advisable to pull the
power cord plug out of the mains socket in any case
before starting maintenance work.
ANY TAM ERING WITH THE ABOVE
-
MENTIONED
SAFETY DEVICES IS ROHIBITED.
e to observe any of the above safety instructions voids the
Layout of the manual
This manual is an integral part of the equipment and
must be kept in the equipment's immediate vicinity by
This manual shall accompany the equipment in case this is
The content of this manual has been drawn up in
compliance with the guide lines of the UNI standard
Diffusion, modification or use of this manual for own aims is
The manual uses symbols which call the reader's attention
to specific points to facilitate its use.
It includes all technical, operating, shutdown, maintenance,
spare parts and safety information.
In case of doubts on the correct interpretation
of the
instructions, please contact our technical service to obtain
Operations which are potentially hazardous for the
operator are highlighted with this symbol.
Such operations can cause serious injury.
requiring special attention are highlighted with
Such operations shall be carried out correctly to avoid

causing damage to objects or to the surrounding
environment. This symbol also highlights information to
which special attention must be paid.

Operations which require careful reading of the manual's
instructions are highlighted with this symbol.
3.2 Symbols
This paragraph describes the safety symbols which may be
posted on the service equipment.
3.2.1 Safety
ALTERNATING
CURRENT
SAFETY GROUNDING
CONSULT THE
INSTRUCTIONS
MANUAL
ATTENTION!
ELECTROCUTION
HAZARD
CAUTION !: DO NOT
REMOVE THE COVER
(maintenance
technicians only)
USE ROTECTIVE
GLOVES
WEAR ROTECTIVE
GOGGLES
USE ANTI
-
SMASH
SAFETY SHOES
3.3 Glossary
To make the reading of this manual easier, we have
prepared the list of the most important technical terms used
in the manual.
Refrigerant:
Refrigerant fluid used in
advanced motor vehicle A/C systems.
The following refrigerant fluids
may be used:
•R-1234yf
CH2CFCF3 2,3,3,3
Tetrafluoropropene.
•R-134a C2H2F4 -
1,1,1,2
Tetrafluoroethane
A/C system: air conditioning system.
Equipment: A/C service
station for
recovering, recycling,
draining and
charging the A/C system.
External tank:
Refrigerant bottle used to
fill the internal tank.
Internal cylinder:
cylinder for refrigerant
storage.
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ACX380/4850
causing damage to objects or to the surrounding
environment. This symbol also highlights information to
Operations which require careful reading of the manual's
instructions are highlighted with this symbol.
This paragraph describes the safety symbols which may be
To make the reading of this manual easier, we have
prepared the list of the most important technical terms used
Refrigerant fluid used in
advanced motor vehicle A/C systems.
The following refrigerant fluids
CH2CFCF3 2,3,3,3
-
1,1,1,2
-
station for
draining and
Refrigerant bottle used to
cylinder for refrigerant
hase:
erformance of a single function.
Cycle: Sequence of steps.
Recovery: Extraction of
refrigerant from
the vehicle.
Recycling:
Cleaning of refrigerant,
includes: separating out oils, removal of
non-
condensable gas and
single/multiple pass through filters to
reduce humidity, acidity and particulate
content of the fluid.
Disposal: disposal
of refrigerant for
storage followed by
destruction/scrapping by an authorised
waste management centre.
Vacuum cycle:
Draining out of a motor
vehicle A/C system and separation out of
condensed matter and humidity, using
only the vacuum pump.
Oil charge: C
harge of oil into an A/C
system to ensure the correct charge as
specified by the vehicle's manufacturer.
Charge:
filling of refrigerant into the A/C
system in the amount specified by the
manufacturer.
System flushing:
Cleaning phase for the
removal of po
ssible polluting substances
from the A/C system or parts of it.
Non condensable gas:
stored in gaseous phase, including air
and nitrogen.
3.4
Guidelines for the handling of refrigerant
3.4.1
Precautions for refrigerant storage
The refrigerant
removed from the A/C system must be handled with
care to prevent or minimise the risk of mixing with other refrigerants.
This machine is suitable for treating R134a or R1234yf
refrigerants, individually (not simultaneously).
The external cylinders used to
store the refrigerants must be clearly
marked to prevent mixing different refrigerants.
Cylinders shall be free from oil or other contaminants and clearly
marked so as to identify the refrigerant contained.
ATTENTION:
when handling, using and storing
R-1234yf
refrigerant and dealing with emergency
situations, MAKE SURE
to refer to the product’s safety
sheet.
GET THE SAFETY SHEET FROM YOUR REFRIGERANT
SU LIER AND FOLLOW ITS INSTRUCTIONS.
REFRIGERANT R1234YF IS DEFINED AS FLAMMABLE
ACX380/4850
|6en
erformance of a single function.
refrigerant from
Cleaning of refrigerant,
includes: separating out oils, removal of
condensable gas and
single/multiple pass through filters to
reduce humidity, acidity and particulate
of refrigerant for
storage followed by
destruction/scrapping by an authorised
Draining out of a motor
vehicle A/C system and separation out of
condensed matter and humidity, using
harge of oil into an A/C
system to ensure the correct charge as
specified by the vehicle's manufacturer.
filling of refrigerant into the A/C
system in the amount specified by the
Cleaning phase for the
ssible polluting substances
from the A/C system or parts of it.
Refrigerant
stored in gaseous phase, including air
Guidelines for the handling of refrigerant
Precautions for refrigerant storage
removed from the A/C system must be handled with
care to prevent or minimise the risk of mixing with other refrigerants.
This machine is suitable for treating R134a or R1234yf
refrigerants, individually (not simultaneously).
store the refrigerants must be clearly
marked to prevent mixing different refrigerants.
Cylinders shall be free from oil or other contaminants and clearly
marked so as to identify the refrigerant contained.
when handling, using and storing
R
-
134a
or
refrigerant and dealing with emergency
to refer to the product’s safety
GET THE SAFETY SHEET FROM YOUR REFRIGERANT
SU LIER AND FOLLOW ITS INSTRUCTIONS.
REFRIGERANT R1234YF IS DEFINED AS FLAMMABLE

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©MAHLE
REFRIGERANT.
3.4.2 Conditions of refrigerant and system
The condition of the refrigerant is critical to the operation of
the vehicle's A/C system. Running repairs properly following
failure or damage safeguards the quality of the refrigerant
itself (particulates, acids and water).
3.4.3 Recycling capacity
The service equipment's filtering systems must be replaced
regularly (see maintenance messages) to ensure effective
recycling.
4 Product description
4.1 Application
A/C service station is suitable for vehicle with A/C systems
using R134a or R1234yf.
The following functions can be implemented:
•Refrigerant recovery and recharging.
•Vacuum generation.
•Flushing.
4.2 Scope of delivery
Description
Service hose (high pressure)
Service hose (low pressure)
Quick-release coupling (high pressure)
Quick-release coupling (low pressure)
New AG oil bottle
Used oil bottle
UV dye bottle
New OE oil bottle
Original instructions
Adapter for external bottle
connection
Funnel
Safety goggles
Safety gloves
4.3 Description of the unit
Fig.1: Left-Front view
1 Rear Handle
2 Tool Tray
3 Status light
4 Low ressure Gauge
5 High ressure Gauge
6 Front Cover
7 Locking Caster
8 Rear Wheel
9 New & Used Oil Bottles
10 rinter
11 Touch screen
DO NOT USE THE UNIT UNLESS THE CHARGING
HOSES (H – L ) ARE CORRECTLY CONNECTED
Fig. 2: Rear view (detail)
1 Fan
2 Vents
3 ower cord connector and ower switch
4 H &L quick couplers and hoses
5 Nitrogen inlet
1
4
2
3
5

| ACX380/4850 | 8en
Fig. 3: Right-front view (detail)
1 High-pressure gauge
2 Low-pressure gauge
3 Display with Touch screen and USB port
The pressure gauges (Fig. 3, os. 1, 2) of the display and
operating unit are used to monitor the pressure during the
individual vehicle A/C service phases. The status of the
various service phases during maintenance is displayed
on the touch screen (Fig. 3, os. 3).
The menu selection and the necessary entries are made
on the touch screen (Fig. 3, os. 3). MAHLE provides a
USB stick for ACX station to activate an additional
database (e.g. Agri&Work machinery). The USB stick can
be inserted in the USB type A port on touch screen frame
(Fig. 3, os. 3).
4.4 User interface
All settings, controls and service functions are available on
the touch screen display. It also displays the service
equipment’s status, the progress of A/C system service and
any alarms and warning/error messages.
The touch screen is the basic operator interface and can be
operated with the fingers. When a button is pressed, a beep
sounds.
The following icons are available on the display:
Icon
Description
Device
connected via
WiFi
The residual
refrigerant weight
(in kg and with
visual bar)
to enable/disable
the bar by
vertically swiping
your finger from
top to bottom
Remote
connection “RE
SOLVE” active
Icon to send
email via WiFi
Icon to print
report via the unit
printer
Icon to print via
WiFi on a
network printer
document in the
print queue
Icon to start cycle
Recovered
refrigerant
amount
Amount of
refrigerant to be
injected
Recovered oil
amount
Amount of oil to
be injected
Amount of UV
dye injected
Vacuum time
Vacuum test time
Function or cycle
disabled
Function or cycle
enabled
Icon to update
list
Low light
intensity
High light
intensity
To select a function in the menu press the text name of the function,
the selection occurs when the finger is released.
If there are functions that need more space on the screen page, for
example: the additional functions or maintenance list, to display the
different entries, it is necessary to horizontally swipe on the display,
or in case of setup it is possible to display the different entries by
moving the scroll bar on the display with the finger. Lift the finger
when you are on the desired position.
Horizontal swipe gesture on
touch screen
1
2
3

|
ACX380/480
|
9
en
©MAHLE
If you need to enter free text or identify a set of data, a
keypad automatically appears (for example, for entering
workshop data or at the end of the service cycle).
Status Light (Fig. 1, os. 3)
The station with the status light on the top communicates
based on the following modes:
•Flashing green: procedure in progress.
•Steady green: procedure completed successfully.
•Steady red: operator presence required.
4.4.1 Main menu
The Main menu of the graphical user interface allows to
select the following functions:
•Vehicle selection
•OneClick
•Cycles
•Additional Functions
•Maintenance
•Setup
•Secured Service (not available for user; reserved
only for customer service personnel)
Each function will be described in the next chapters.
4.5 E³ CONNECT quick couplers
E³ CONNECT is the INTELLIGENT COU LER, that with the
suitable automated procedure in the software enables to:
•reduce the non condensable gas formation inside
the cylinder ;
•avoid refrigerant dispersion in the air during
disconnection (puff effect);
•check possible SCHRADER valve leaks before
disconnection.

| ACX380/4850 | 10 en
5 Technical features
Cylinders for R134a or R1234yf
fluids
R134a or R1234yf
cylinder capacity
20 l
Maximum
operating
pressure ( S)
20 bar
ED category
(Dir.2014/68/EU)
III
Weight of
refrigerant content
Scale
Safety valve
Type
AIRTEK
-
VS14N T20HN
BR ED4 20bar
R 1/4 N T
Calibration
pressure
20 bar
ED category
(Dir.2014/68/EU)
IV
Containers for oil and detection
dye
Recovered AG
oil container
250 ml
New AG oil
container
250 ml
UV Dye container
250 ml
New OE oil
container
250 ml
neumatic circuit
Vacuum pump
flow rate
100 l/min double
stage
Vacuum level
0.02 mbar
Vacuum pump oil
life
60h
–
extensible
to max 1000 h
with E
3
UM
procedure
Refrigerant
recovery
compressor cubic
capacity
14 cc
Drier filter
Every 150Kg of
refrigerant
recovered
Non condensable
gas discharge
Automatic, with
solenoid valve
H and L taps
Automatic
Safety pressure switch
Type
13/18bar
1/4SAE
Trip pressure
18 bar
ED category
(Dir.2014/68/EU)
IV
neumatic fittings
Net length of
external H and
L hoses
4.5 m
H and L
Analog 80 mm,
pressure gauges
pulse
-
free, 1.0
class
Display
Touch screen
7” TFT colours
Keypad
Touch screen
Software updating
Via Wi
-
Fi
rinter
via Nexusprint
software or via
thermal printer
Functions and features
Recovered oil
measurement
Automatic
weighing, 1 g
res., 5 g acc.
New oil automatic
charge
With automatic
scale, 1 g res.,
5g acc.
UV dye automatic
charge
Timed
Electric
compressor
function
With integrated
flushing function
Flushing
Flushing
available with
external
accessory
(option)
Database
Complete
electronic (cars
and industrial
vehicles only)
AC erformance
Test
Manual and
automatic
Recovered oil
measurement
Automatic
weighing, 1 g
res., 5 g acc.
Sound level
< 70 dB (A)
Battery type for
internal Real time
clock
Lithium CR
-
2032 3V
180mAh 3g.
Overall dimensions
WxDxH
700 x
750 x
1100 mm
Loadless weight
about 85 kg
ower supply
Frequency
50 Hz
Voltage
230 V ~
ower
800 W
rotection
Thermal
Installation
category
II
Environmental conditions
Operating
temperature
10
-
50°C
Humidity
10
-
90% R.H.
(non
condensing)
Ambient
pressure
75 k a until 106
k a