MAHLE ACX2180H User manual

MAHLE ACX2180H

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Contents
1 Symbols use ............................................4
1.1 In the documentation.................................4
1.1.1 Warning notices- Structure and
meaning4
1.1.2 Symbolsin thisdocumentation .........4
1.2 On the product............................................4
2 Important notes..............................4
2.1 User group .................................................4
2.2 Agreement .................................................4
2.3 Obligation of contractor .........................5
2.4 Safety regulations ...................................6
2.4.1 ACX2180H .............................................6
2.5 Safety devices............................................8
2.6 Proper disposal...........................................8
2.7 Recycled material disposal.......................8
2.8 Packaging disposal....................................8
2.9 Disposal of combo filter.............................8
2.10 Technical Data............................................8
2.11 Glossary.......................................................8
3 Product description.......................9
3.1 Application ..................................................9
3.2 Scope of delivery .....................................9
4 Description of unit .......................10
5 Input Selection .............................12
5.1 Selection and function key......................12
5.2 Display screen..........................................13
5.3 Main Menu Options..................................13
5.4 Unit Features............................................13
5.4.1 EcoLOCK ® couplers (optional)........13
5.4.2 Locking caster brakes .......................13
5.4.3 Power supply cable and switch ......13
5.5 Functionaldescription ..........................14
6 Equipment installation ................15
6.1 Unpacking ACX2180H .........................15
7 Commissioning ............................16
7.1 Connections and positioning ..............16
7.2 First start-up verification .....................16
7.3 Setup .........................................................17
7.4 Internal Bottle Fill ..................................17
8 A/C service preparation ..............18
8.1 Preliminarypreparation .......................18
8.2 Non-condensable gas discharge .......18
8.3 Charge Modes .........................................18
8.3.1 Quick Modes .........................................18
8.3.2 Zero tolerance mode .........................18
9 A/C system service......................19
9.1 Automatic cycle setup.............................19
9.2 Manual cycle setup..................................19
9.3 Recovery process....................................20
9.4 Vacuum process ......................................20
9.5 Charge process........................................20
9.6 Flushing after changing type of Oil ..21
9.7 Vehicle Pressure Check ..................21
9.8 Unit of measure ...................................21
9.9 Clock Adjustment.................................21
9.10 Setting language....................................21
10 Maintenance .................................22
10.1 Maintenance interval ............................22
10.2 Filling internal refrigerant cylinder ....22
10.3 Self test ....................................................23
10.4 Pressurezero .........................................23
10.5 Counters ...................................................23
10.6 Long life pump test ...............................23
10.7 Vacuum pump oil change ....................24
10.8 Replace filter dryer .................................24
10.9 Printermaintenance (optional) ..........25
10.10 Periodicchecks ......................................25
11 Spare parts ...................................26
12 Maintenance .................................27
12.1 Vacuum pump oil change.......................27
12.2 Filter dryer change...................................29
12.3 Refrigerant load cell calibration check..32
12.4 Other checks/maintenance/repairs .......33
12.5 Notes..........................................................35

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4 |ACX2180H|
1 Symbols use
1.1 In the documentation
1.1.1 Warning notices- Structure and meaning
Warning notices warn of dangers to the user or people in
the vicinity. Warning notices also indicate the
consequences of the hazard as well as preventive action.
Warning notices have the following structure :
Warning
symbol
1.1.1.1.1 KEYWORD - Nature and source of hazard!
Consequences of hazard in the event of failure
toobserveactionandinformationgiven.
Hazardprevention action information.
The key word indicates the likelihood of occurrence and the
severityofthehazardintheeventofnon-observance:
1.1.2 Symbols inthis documentation
1.2 On the product
Observe all warning notices on products and ensure
they remain legible.
Wearprotective goggles.
Wearprotective gloves.
2 Important notes
Beforestartup,connectingand
operatingMAHLE productsitis
absolutelyessentialthattheOriginal
instructions/owner’smanualand,in
particular,the safety instructions are studied carefully.
By doing soyoucaneliminateanyuncertaintiesin
handling MAHLEproducts and thus associated safety
risks upfront; something which isintheinterestsofyour
ownsafetyandwillultimatelyhelpavoid damagetothe
device.WhenaMAHLEproductishandedover to
another person,notonlytheOriginalinstructions but
also the safety instructionsandinformationonits
designatedusemust behandedovertotheperson.
2.1 User group
The product may be used by skilled and instructed
personnel only. Personnel scheduled to be trained,
familiarized, and instructed or to take part in a general
training course may only work with the product under the
supervision of an experienced person. All work conducted
on pressurized equipment may be performed by persons
with sufficient knowledge and experience in the field of
refrigeration, cooling systems and coolants and, also be
aware of the risks involved in the use of pressurized
devices
2.2 Agreement
Byusingtheproductyouagreetothefollowingregulations:
Copyright
SoftwareanddataarethepropertyofMAHLEorits
suppliers andprotectedagainstcopyingbycopyright
laws,international agreementsandothernationallegal
regulations.Copyingorsell ingofdataandsoftwareorany
partthereofisimpermissibleand punishable; in the
event of any infringements MAHLE reserves the right to
proceed with criminal prosecution and to claim for
damages.
Keyword
Probabilityof
occurrence
Severityofdanger
if instructions not
observed
impending
Death or severe injury
impending
Death or severe injury
Possible
Minor injury
Symbol
Designation
Explanation
Warns about possible property
damage
Practical hints and other useful
information.
1.
2.
Instruction consisting of several
steps.

Instruction consisting of one step.

An instruction produces a visible
intermediate result.


There is a visible final result on
completion of the instruction.

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Liability
Alldatainthisprogramisbased—wherepossible—on
manufacturer and importer details. MAHLE does not accept
liability for the correctness and completeness of softwareand
data; liability for damage caused by faulty software and data is
ruled out. Whatever the event, MAHLE liability is restricted to
the amount for which the customer actually pays for the
product. The disclaimer of liability does not apply to damages
caused by intent or gross negligence on the part of MAHLE.
Warranty
Any use of non-approved hardware and software will result in
a modification to our product and thus to exclusion of any
liability and warranty, even if the hardware or software has in
the meantime been removed or deleted.
Nochangesmaybemadetoourproducts. Our products may
only be used in combination with original accessories and
original service parts. Failing to do so, will render null and void
all warranty claims.
This product may only be operated using MAHLE approved
operatingsystems.If theproductisoperatedusinganoperating
system other than the approved one, then our warranty
obligation pursuanttooursupplyconditionswillberendered
nullandvoid. Furthermore,wewillnotbeheldliablefor
damageandconsequential damage incurred through the use
of a non-approved operating system.
2.3 Obligation of contractor
Thecontractorisobligedtoensurethatallmeasures
geared towards the prevention of accidents, industrial
diseases, labor- related health risks are taken and
measures towards making the workplace fit for people
toworkinarecarriedout.
Basic rules
Thecontractorisboundto ensurethatall electrical
equipment and operating material is set up,modified
and maintained by skilledelectriciansonlyorunder
theguidanceandsupervision ofaskilledelectricianin
accordancewithelectricalengineering principles.
Furthermore,thecontractormustensurethatall
electricalequip ment and operating material is
operated in keeping with electrical engineering
principles.
If a piece of electrical equipment or operating
material is found to be defective, i.e. It does not or no
longer complies with electrical engineering principles,
the contractor must ensure that the fault is rectified
immediately and, in the event that imminent danger
exists, also ensure that the electrical equipment or
the electrical operating material is not used.
Tests (taking Germany as an example)
The contractor must ensure that all electrical systemsand
equipmentaretestedbyaqualified electricianorunderthe
guidanceofaqualifiedelectriciantoensuretheyareinproper
working order:
—Before starting for the first time.
—After modifications or repairs before starting
—At given intervals. Set intervals such as to ensure that
faults that can be expected to occur are determined in
good time.
The test is to take the electrical engineering principles
relating hereto into account.
Upon request of the free trade association, a test manual is
to be maintained into which specific entries are made.

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2.4 Safety regulations
2.4.1 ACX2180H
Always carefully study and follow all the safety regulations before using the
MAHLE product.
Avoid all skin contact with the refrigerant. The low
boiling point of the refrigerant (approx. -30° C) can
lead to frostbite. Should refrigerant come into contact
with the skin, remove any moistened clothing
immediately and rinse the area of skin affected with
generous amounts of water.
Avoid all skin contact with the UV dye. Should UV dye
come into contact with the skin, remove any moistened
clothing immediately and rinse the area affected with
generous amounts of water.
R134a is colorless, with weak characteristic smell and
heavier than air. It may flow into repair pits. Should
refrigerant escape, Provide for sufficient ventilation
(particularly in repair pits) and leave the workshop.
Never inhale refrigerant, dye and oil vapors. The
vapors can irritate the eyes, nose and respiratory
system. If liquid refrigerant or UV dye comes into
contact with the eyes, rinse them thoroughly with
waterfor15minutes. Thenobtainmedical attention
evenifnopain isfelt
Never swallow UV dye. Should it be swallowed inadvertently,
never attempt to induce vomiting. Drink generous amounts of
waterandobtainmedicalattention.
 Beforeconnecting the ACX2180Hto a vehicle air conditioning
system or an external refrigerant bottle, make sure the quick-
release couplings are not leaking. Only ever use external
refrigerant bottles provided with safety valves and certified
in line with applicable standards.
Before switching off the ACX2180H, make sure all charging
and drainage operations have been completed. This
prevents damage to the unit and reduces the risk of
refrigerant escaping into the environment.
Never use compressed air with R134a. Certain
mixtures of air and R134a are highly flammable.
Such mixtures are a potential hazard and may lead
to fire or explosions and thus cause damage or
injury.
Refrigerant extracted from a vehicle air conditioning system
maybecontaminatedwithmoisture,lubricant,dirtandtraces of
othergases.
If the refrigerant has been contaminated by being
mixed with other gases, remove the contaminated
refrigerant and add fresh R134a before using the
ACX2180H for A/C service.
R134a is not to be used in areas in which there is a
danger of explosion. Fire, open flames and smoking
are prohibited.
The ACX2180H unit should not be exposed to
excess moisture or be operated in wet areas
R134a is not to be mixed with other refrigerants. The
mixing of refrigerants could damage the vehicle air
conditioning system.
De-energizingisonlytobeperformedbya qualified
electrician, a qualified electrician for specific tasks (hybrid) or
a power systems engineer.
Work on vehicles with high-voltage components is only ever
to be performed in a safe de-energized condition by persons
with the minimum qualification “Trained to perform electrical
work”.
 Even after deactivating a high-voltage vehicle electrical
sys tem,thehigh-voltagebatterymaystillbelive.
Operatingconditioncannotbeestablishedfromanyrunning
noise, as the electric machine is silent when stationary.
In gear positions "P" and "N" the engine or electric motor
may start spontaneously depending on the charge of the
high-voltage battery.
 Never open or damage high-voltage batteries.
Onvehiclesthathavebeeninanaccident,nevertouchhigh-
voltage components or exposed high-voltage wires before
deactivating the high-voltage vehicle electrical system.
TheACX2180Hmustbeconstantlymonitoredwhenin
opera tion.Never leave theACX2180Hunattended when in
operation. Vehicle A/C service using the ACX2180Hmust be
prepared and implemented such that the vehicle air
conditioning system circuitdoesnothavetobeopened(for
examplebyremoving theradiatororengine).
Position the ACX2180H on all four wheels on a flat,
vibration- proof surface so that proper operation of the
scales is guaranteed
Vehicle A/C service using the ACX2180H must be prepared
and implemented such that the vehicle air conditioning
system circuit does not have to be opened (for example by
removing the radiator or engine).
The ACX2180Hcan be securedin position by locking
the caster brake.
If high-voltage components or high-voltage wires are
handledincorrectly,thereisariskoffatalinjuryfrom
highvoltageandthepossibletransmissionofcurrent
throughthebody.

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The ACX2180H must always be transported initsoperating
position.NeverlaytheACX2180Honitsside,asoilcould
thenescapefromthevacuumpumporthebuiltincompres sor
could be damaged. There are no additional safety systems
for protecting the ACX2180Hagainstdamageresultingfrom
natural catastrophes.
We recommend calibrating the scales at least once per year.
Contact customerservicefor calibrationofthescales.
 TheACX2180Hmustbesubjectedtoregularmaintenanceby
servicepersonnelorauthorizedagentstoensurethesafety of
theunit.
Disconnect power before performing any maintenance or
servicetounit.
Never perform any maintenance work which is not expressly
recommended in this manual. Contact customer service if
components have to be replaced other than in the course of
maintenance work.
 The ACX2180H must be connected to a properly grounded
electrical connection.
IfthereisdamagetotheACX2180H,terminateusage
imme diately and contact customerservice.
 Theservicehosesandservicequick-releasecouplingsmust be
regularlycheckedforwearandreplacedifdamaged.
The ACX2180H must be operated in an environment
corresponding to the directive BGR 157 with respect to the
exchangeofair.
 Observelocallawsordirectivesastoensurethesafetyofthe
pressurized device.
Followthepertinentlegalregulationsordirectivestoensure
safehandlingofpressurizeddevices.
For safety reasons it is advisable to use a residual current
operated circuit breaker (rccb) with the following
specifications:
Parameters
Rated voltage
110VAC±10%
Rated frequency
50/60Hz
Rated current
10A
Ratedtrippingcurrent
30mA
Trippingswitch
C
NeverremoveanycomponentsfrominsidetheACX2180H
except for maintenanceor repair purposes.
Avoid using an extension cord with the unit. If necessary,
use a good condition (three wire grounded, #14AWG or
larger) extension cord of the shortest possible length. In
addition, the current drawn by all devices connected to the
wall socket must not exceed 15A total.

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2.5 Safety devices
Description
Function
Pressure
switch
Switches the compressor off in the normal operating
pressure is exceeded
Safety valve
The safety valve opens if the design pressure is exceeded
Circuit
Breaker
Interrupts the power supply if overcurrent is applied to the
ACX2180H
Vents
The ACX2180H is provided with vents in the housing to
ensure the exchange of air even when switched off.
2.6 Proper disposal
At the end of its service life, this equipment must be
disposed of as follows:
—Contact the service center to have the refrigerant in
the unit recovered and recycled.
—Consign the unit to an authorized collection
center according to local legislation.
2.7 Recycled material disposal
—Return the refrigerant recovered from the
unit to the refrigerant supplier for proper
disposal or recycling.
—Lubricants extracted from the vehicle's
A/C system must be returned to an official
oil collection center
2.8 Packaging disposal
Electronic and electrical A/C service
equipment must never be disposed of with
domestic waste, but recycled appropriately.
—The packaging must be disposed of in
conformity with local legislation.
—This contributes to protecting the
environment
2.9 Disposal of combo filter
—Dispose of the filter via official collection
points or in accordance with the local
regulations. This contributes to protecting
the environment
2.10 Technical Data
Description
Specification
R134a tank capacity
12L
Service pressure
400PSI
Maximum content
22lbs.
Method to weigh gas content
Load cell
Recovered oil container
250ml
Vacuum pump
2CFM dual stage
Vacuum pump oil quantity
250ml
Compressor capacity
0.87cu in/14cc
Dryer filter
90kg recovered R134a
Non-condensable gas purge
Automatic via solenoid valve
HP and LP taps
Automatic
Display
7 inch capacitive touch screen
Software updating
USB type A or USB type B direct
connect to PC
Printer (optional)
Thermal, 24 columns
All functions
Automatic and manual
Recycling mode
Single pass
Memory for customized cycles
100 records
Flushing
With integrated solenoid valves
System pressure diagnostics
Manual and automatic
Dryer filter replacement alarm
Active
Vacuum pump oil replacement
alarm
Active
Full/empty tank check alarm
Active
Full oil container check alarm
Visual
Empty oil container alarm
Visual
Dimension H x W x D
119 x 74 x 74 cm
Dry weight
98kg
Power supply frequency
60Hz
Voltage
120VAC, 1 phase
Total max load
7.5A
Overcurrent protection
12A (circuit breaker)
Operating temperature
50 - 122°F
Humidity
10 90%RH (non-condensing)
Storage temperature and
humidity
-13 to 50°F
10 - 90%RH (non-condensing)
Max operating altitude
6562 ft.
Pollution degree
2
Water degree
0
Certifications
SAE J2788
UL 1963
CAN/CSA STD C22.2NO. 120 –M91
2.11 Glossary
Recovery phase: The refrigerant is extracted from the vehicle
air conditioning system, cleaned and routed into the internal
bottle of the ACX2180H. The refrigerant oil collected in the
process is drained into the used oil bottle at the ACX2180H.
Vacuum phase: A vacuum is generated in the vehicle air con-
ditioning system. Measurement of the drop in pressure begins as
soon as the vacuum has been generated.
 Charging phase: A certain quantity of refrigerant is added to the
vehicle air conditioning system.

Description of unit |ACX2180H| 9 en
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3 Productdescription
3.1 Application
ACX2180Hissuitableforvehicleswithaconventionalengine
as well as for hybrid and electricvehicles. ACX2180H features
allthe functions requiredfor vehicle A/C service.
Thefollowingfunctionscanbeimplemented:
Refrigerantrecoveryand recharging.
Vacuumgeneration.
Flushing.
The ACX2180Hcan only be operated with R134a. The
ACX2180His notto be used for service work on vehicles
with air conditioning systems employing refrigerants other
than R134a, asthis will cause damage. Prior toA/C service
checkthetypeofrefrigerantusedinthevehicleair
condition ingsystem.
3.2 Scope of delivery
Description
Service hose (high pressure)
Service hose (low pressure)
Quick-release coupling (high pressure)
Quick-release coupling (low pressure)
Usedoil bottle
Originalinstructions
Adapter(externalbottle)-USAcme1/2
Calibrationcheckweight

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10 | ACX2180H | Description of unit
4 Description of unit
Fig. 3 Front left view
1. Vacuum pump oil level sight glass
Fig. 1: Front Left View
1. Rear Handle
2. Tool Tray
3. Status indicator light
4. LCD display
5. Low Pressure Gauge
6. High Pressure Gauge
7. Front Cover
8. Locking Caster
9. Rear Wheel
10. Printer (optional)
11. Used oil bottle
Fig. 2: Rear View
1. Service Hoses
2. Fan
3. Vent
4. Hose Storage
Figure A: Rear Connection View
1. High Side Parking Coupler
2. Low Side Parking Coupler
3. Refrigerant Identifier (Optional)
4. Power Switch with circuit breaker
5. Power Cord socket
4
[Type
[Type

Description of unit |ACX2180H| 11 en
Fig. 4: Internal components
1. Accumulator/Oil separator
2. Combo filter
3. Compressor
4. Vacuum pump
5. Refrigerant tank
6. HS compressor oil separator
7. Manifold

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12 | ACX2180H | Description of unit
Fig. 5: Display and operating unit
1. Low Side pressure gauge
2. LCD Touch Screen
3. Status and warning indicator light
4. High Side pressure gauge
5. USB port
To select a function in the menu, press the text name of the function
and theselection occurs when finger is released. The selected entry
is highlighted with a different color (from blue to gray) and the menu
screen pages changes.
Fig. 6: ACX2180H Home Screen
If there are menus that cannot fit on one screen, there will be arrows
located on a side of the screen. By placing finger on screen and
swiping left/right, the screen options will also move.
The menu selection and necessary entries are made by way of the
LCD touch screen (Fig. 5, Pos. 2) integrated in the panel.
The pressure gauges (Fig. 5, Pos.1,4) of the display and operating unit
are used tomonitor the pressure during the individual vehicle A/C
service phases. The status of the various service phases during
maintenance is displayed on the LCD screen (Fig. 5, Pos. 2).
The status and warning indicator light (Fig. 5 Pos. 3) indicates the
service status. See chart below for further definition.
Status and warning light color
Maintenance status
Red Light
Error/warning
Flashing green
Operation in progrress
Green light
Operation complete/Attention Operator
5 Input Selection
5.1 Selection and function key
Allsettings, controls and service functions are available on the LCD
touch display. Data entry and moving of the cursor is performed with
user's finger or another object such as a pen or stylus. The LCD
displays the service equipment's status, the progress of A/Csystem
service and any alarms/error messages.
Do not use a sharp, pointed object on the touch screen.
Damage may occur!
Although the LCD touch screen is glass, do not use harsh
chemicals to clean the surface. Standard glass cleaner is
recommended

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13 |ACX2180H|Description of
unit
5.2 Display screen
When unit loads, the home screen will be displayed (Fig. 6).
This screen is accessible by pressing ( ) button in lower left
corner of the screen.
Fig. 7: ACX2180H Menu Selections
An Automatic or Manual process can be selected by touching
the word on the upper right side of the screen or by touching
the (MENU) button in the lower left corner of the screen
and selecting which type of process is desired.
To select a function in the menu, touch finger to option.
If you need to enter free text, the numerical keypad can be
used.
5.3 Main Menu Options
The main menu of the graphical user interface allows user to
selectthefollowingfunctions:
Vehicle Selection
Automatic
Manual
Special functions
Maintenance
Setup
Eachofthemenuoptionswillbedescribedindetaillaterinthe
manual.
5.4 Unit Features
5.4.1 EcoLOCK ® couplers (optional)
EcoLOCK® istheintelligentcouplerthatwiththesuitableauto-
matedprocedureinthesoftwareenablesto:
 Reduce the amount of non-condensable gases
formed inside the cylinder
 Avoid the refrigerant (loss) dispersion in the air
during the disconnection of the couplers (Puff-effect)
 CheckpossibleSchradervalveleaksbefore
disconnection
Fig. 8: EcoLOCK ® Couplers
Toconnect the coupling, position the coupling on the parking
coupler, pull back the knurled section of the coupling element
and press carefully onto the connection (Fig. 9).
Fig. 9: Fastening quick release coupling
The service quick-release couplings are connected to the
service connections of the vehicle air conditioning system
during A/C service. When not in use, the service quick-
release couplings can be connected to the parking/flush
couplers
To remove the service quick-release couplings from the park
coupler, press the coupling slightly towards the connection
and carefully pull the knurled section back to unfasten it from
the coupler.
5.4.2 Locking caster brakes
Rolling of the ACX2180H can be prevented by locking the
caster brakes (Fig. 1, Pos. 8) at the front wheels.
5.4.3 Power supply cable and switch
The power supply cable is connected to the main power
input. When not in operation, the power supply cable can
be disconnected and hung on the handle. The ACX2180H
is switched on by toggling the rocker switch to the on
position.
Fig. 5: Display and control panel
8. Low pressure gauge
9. LCD Touch Screen
10. Status and warning Indicator light
11. High pressure gauge
12. USB port

Description of unit |ACX2180H |14
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5.5 Functionaldescription
The refrigerant recovered from the air conditioning system
pass through the combo filter to remove suspended
particles and moisture.
The purpose of the vacuum pump is to generate a vacuum
in the air conditioning system which removes excess
moisture and to detect possible leaks in the vehicle air
conditioning system.
Used oil is separated from the recovered vehicle refrigerant
and drained into the used oil bottle.
The vehicle air conditioning system is partly filled with UV
dye to facilitate the detection of leaks in the event of
damage to the vehicle air conditioning system.
The refrigerant in the internal refrigerant bottle is used
for filling the vehicle air conditioning system.
The purging unit for the non-condensable gases, consisting
of a temperature sensor, pressure sensor, coil and orifice
always takes effect when the internal refrigerant bottle
pressure is higher than the saturation pressure

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15|ACX2180H|Equipment
installation
6 Equipmentinstallation
6.1 Unpacking ACX2180H
Warning–Risk of personal injury!
Incorrect handling could cause equipment to
overturn.
The manufacturer disclaims all responsibility for
damage to objects and/or persons resulting from
the equipment being wrongly removed from the
pallet, or if the operation is performed by
unsuitable personnel, with improper means
protections and without complying with the existing
laws on manual handling of loads and with the
operations described in this manual.
Remove staples and remove the carton (Fig. 10)
Slowly lower the unit from pallet by means of the rear
wheels (Fig. 12).
Fig. 12: Lowering unit from the pallet
 Keep the pallet, carton, and scratch protection film for use in
case of a need to return unit.
Fig. 10: Removing carton
Cut straps securing unit to pallet.
With2people,liftbothfrontwheelsbyleveringwiththe
handlesounitissettingontherearwheels(Fig.11).
Fig. 11: Tilting unit backwards

Commissioning |ACX2180H |16 en
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7 Commissioning
AlltheoperationsdescribedinSection7mustbeperformed
prior to first A/C service
7.1 Connections and positioning
The ACX2180H is designed for 110V, 50/60Hz.
Follow the information on the ACX2180H rating
plate.
1 Set the ACX2180H on a flat, vibration proof surface.
2 Actuate the caster brake to stop the ACX2180H from rolling.
3 Connect the power supply cable to the power supply.
4 Switch on the main switch.
Theunitmustbepositionedonastable,horizontalsurfaceto
ensurecorrectoperation.Unitmustbeinanareawithproper
ventilation and atleast 10cmfromanypotentialobstacleto
itsinternalventilation.
Keep unit out of rain and excessive humidity as moisture
could cause irreparable damage.
Prevent exposuretodirect sunlight andexcessivedust.
Unitmust beproperlygroundedwiththepowerplugground
pin.Failuretogroundunit cancausedamageandconstitutes a
riskoffatalinjuryorshocktotheoperator.
Do not unplug any internal electrical connections and only
have internal components opened and repaired by trained
customerservicepersonnel.
Contactcustomerserviceintheeventofanytransportation
damage(e.g.oilleakage).
Leavequickcouplingsclosedwhenunitisnotinuseandat
endofvehicleserviceoperations.
7.2 First start-up verification
Warning –Risk of frostbite from escaping
refrigerant
Refrigerant causes frostbite on the skin
Check the service hoses for damage
Firmly connect the service quick-
release couplings to the service hoses.
Wear protective goggles.
Wear protective gloves.
Execute the following actions in sequential order by following
the procedure as shown on the display:
— Gas weight check (vacuums entire
refrigerant circuit to ensure no
contaminants are in system prior to
filling
— First internal cylinder fill
It is possible to interrupt the initial check and print a report
in whichthestatusof the check isreported(ifprinteroption
was purchased).
Equipment cannot operate in automatic mode until all the
stepsofinitialcheckarecompleted.
1. Setthe internal cylinder fill to desired quantity (min. 3kg).
2. Follow on-screen instructions.
3. Make sure hoses are disconnected from any external
source at this time.
4. Start the procedure that initially creates vacuum in the
internal refrigerant circuit (approximately 15 minute
process).
5. Once message is displayed, the unit can be connected to
the external cylinder and the valves opened.
6. Just before the targeted refrigerant amount is reached,
unit will pause and prompt user to close external
refrigerant tank connection.
7. Once this is done, the unit will continue to recover the
refrigerant from the hoses and end once this is completed.
The total amount recovered will then be displayed.

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17|ACX2180H| A/C System service
7.3 Setup
From the SETUP menu, it is possible to enable/disable and set
certain parameters prior to performing A/C system service. To
access SETUP from the main menu, press, and the
SETUP menu will be displayed .
Parameter
Description
Wi-Fi
Allows connectionto wireless internet access
Print
Provide print options
Update
Allows software updating
Brightness
Adjustment of screen backlight
Maintenance
Counters
Displays historical unit information
Units of
measurement
Allows metric and empirical unit changes for all
unit parameters
Account
User information definitions
Language
Allows adjustment of user language on display
Remote Control
Used for remote tech service diagnostics
System Information
Displays all internal system information
Date and Time
Adjustment of date and time
Settings
Allows enable and disable for selected
functions
Configure
Password protected service information
Check the type of source tank, 2 types are available:
—Refrigerant cylinder with plunger (typically 2
valves):
Connect to the liquid valve and keep tank in the upright
position to transfer refrigerant.
—Refrigerant cylinder without plunger (single valve):
Connect to the available valve and invert tank to
transfer refrigerant.
Fig. 13: Virgin refrigerant cylinder tank types
The LP (blue) gauge indicates the pressure inside the
external cylinder
7.4 Internal Bottle Fill
Warning –Risk of frostbite from
escaping refrigerant
Refrigerant causes severe frostbite
on the skin.
Check the service hoses for damage.
Firmly connect the service quick-release
couplings to the service hoses.
Wear protective goggles.
Wear protective gloves.
Before the ACX2180H can be used, the internal refrigerant
bottle must be filled with liquid refrigerant. Use only R134a
refrigerant.
A menu-driven refrigerant check is performed before filling
the internal refrigerant bottle.
The refrigerant can be obtained from your gas supplier. It can
be stored normally and transported in bottles with connection
fittings.
To ensure a reliable procedure, it is advisable to use the
optimum quantity of refrigerant. The optimum quantity of
refrigerant for the ACX2250 is 4kg –9.5kg.
An inadequate quantity may make efficient filling of the
vehicle air conditioning system impossible. Also, if there is an
insufficient quantity, the ACX2250 may not be able to operate
efficiently. In the event of an excessive quantity, there may
not be sufficient space for the refrigerant recovered from the
vehicle air conditioning system.
Generally speaking, the actual quantity of refrigerant added
exceeds the set quantity by approx. 200g as there is no
refrigerant in the internal refrigerant circuit. Add 200g to the
set quantity when filling with refrigerant for the first time.
1. Select "Maintenance>>Internal bottle fill".
2. Follow the menu prompting.
The current pressure inside the external refrigerant bottle is
indicated on the low-pressure gauge.
Any amount of refrigerant between 200g and 10500g can be
added.
Do not interrupt the automatic filling process prior to
automatic termination by the ACX2180H.
Press the Home key to check the quantity of refrigerant in the
internal refrigerant bottle upon completion of the filling
operation.

A/C System service | ACX2180H | 18
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8 A/C service preparation
8.1 Preliminary preparation
Warning - risk of burns from hot engine
components
Contact with hot engine components
will cause severe burns.
Allowtheenginetocooldown.
Wear protectivegoggles.
Wear protectivegloves.
Warning - risk of frostbite from
escaping refrigerant
Refrigerant causes frostbite on the
skin.
 Checktheservicehosesfordamage.
Firmly connect the service quick-
release couplings to the service
hoses.
Wear protective goggles.
Wearprotectivegloves.
Perform the following preparatory work prior to vehicle
A/C service: Service hoses must be constructed of the
proper materials and have the lengths as supplied by
the unit. Hoses must have shut-off devices (quick-
release couplers) at the connection point to the A/C to
minimize the introduction of air into the ACX2180H and
to minimize the amount of refrigerant released while
disconnecting the hoses.
Inspect hoses for signs of damage prior to performing
A/C service. Use of damaged hoses will result in the
loss of refrigerant and the possibility of refrigerant
contamination.
Followthevehiclemanufacturer'srecommendationsfor
A/C service on vehicles with a low-pressureconnection
only.
A/C service operations (especially recovery) should be
performed after the vehicle has been run for a period of
time to allowengineheattoraisesystempressure.This
allowsforthe maximum refrigerant recovery amount to
occur. If system is excessively hot, the recharge phase
could be adversely effected.
The ACX2180H is only to be operated with R134a
refrigerant. Check with refrigerant is used for the vehicle
before performing A/C service.
Never attempt to close the valves of the internal
refrigerant bottle while the ACX2180H is in operation.
Only new lubricant as specified by the system
manufacturer shall be installed in vehicle A/C system.
Lubricant removed from the system and or equipment
shall be disposed of in accordance with the applicable
federal, state and local procedure and regulations.
The service parameters (recharge quantity) can be
found in the owner's manual or the vehicle repair
manual.
8.2 Non-condensable gas discharge
If the ACX2180H detects non-condensable gases in the
internal cylinder, the unit will prompt technician to allow
unit to run an air purge. This prompt will occur every
time unit is powered on (if unit has been powered off for
at least 1 hour.)
The process will perform automatically upon the startof
a charge procedureif non-condensables aredetected.
Air purge is a necessary process to ensure ideal working
parameters for the ACX2180H. Presence of non-condensable
gases will increase tank pressure and reduce efficiency of
recharge cycles.
8.3 Charge Modes
The ACX2180H has 2 different refrigerant charge
methods. If charge does not complete using Quick
mode, the zero tolerance method automatically
commences
8.3.1 Quick Modes
In Quick mode, the ACX2180H injects refrigerant through HP port.
The refrigerant remains in the hoses at the end of the cycle and is
then recovered during a hose clearing process.
8.3.2 Zero tolerance mode
While the Zero tolerance mode is slightly longer in time, it provides
a more accurate recharge and guarantees a successful charge.
In Zerotolerance mode,the ACX2180Hwill bydefault charge
through the HP (red) hose, then refrigerant that remains in the
hoses ispulledintothevehicle'sA/CsystemthroughtheLP(blue)
hose.
In the instance where only a LP coupling is available for A/C
service, the ACX2180H will charge the system with 50% of
the total charge amount with the vehicle A/C compressor off.
The unit then waits 10 minutes to allow theliquid refrigerant
to evaporate to prevent damage to the compressor. The
vehicle must be started and the A/C system turned on. The
ACX2180H will continue to charge the refrigerant whenever
the LPhose pressure is less than 3 bar.

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19|ACX2180H| A/C System service
9 A/C system service
9.1 Automatic cycle setup
Access to automatic cycles is available through the main
menu by selecting AUTOMATIC.
Do not connect hoses/couplers to vehicle A/C system until
prompted by the unit.
All values in the AUTOMATIC cycle mode are preset and
unable to be modified from the Automatic menu, except for
the refrigerant charge amount. If changing the value of the
vacuum amount is desired, select a MANUAL process and
choose all 3 services to be performed.
1. From the main menu, select AUTOMATIC.
2. Adjust the charge value to match that of the vehicle
manufacturer’s recommended value.
Fig. 14: Adjusting charge value
3. To change which hose the unit will charge, touch the blue
box at the bottom of the screen that says LP-HP. A menu
will pop up that allows technician to select which
hoses/couplers to charge through.
4. If the technician wishes to perform a pressure check of the
A/C system, they should select Vehicle Pressure check at
the bottom of the screen. (When highlighted BLUE, the
pressure check function is selected; when in GREY, the
unit will not perform a pressure check.)
5. After options are properly adjusted, press the green arrow
in the lower right corner of the screen.
Fig. 15: Automatic setting confirmation
6. If settings are correct, press START button to begin
process
9.2 Manual cycle setup
Access to manual cycles is available through the main menu by
selecting MANUAL CYCLES.
Do not connect hoses/couplers to vehicle A/C system until
prompted by the unit.
1. From the main menu, select MANUAL.
Fig. 16: Manual setting selection
2. Select the services desired by touching button at the upper
right corner of each column. (Figure shows charge service
selected)
See the sections about Recovery, Vacuum, and Charge on the
next page for more detailed cycle setting information.
3. To change the charge hose, touch the blue box at the
bottom of the screen that says LP-HP. A menu will pop up
that allows technician to select which hoses/couplers to
charge through.
4. If the technician wishes to perform a pressure check of the
A/C system, they should select Pressure check at the
bottom of the screen. (When highlighted BLUE, the pressure
check function is selected; when in GREY, the unit will not
perform a pressure check.)
5. After options are properly adjusted, press the green arrow in
the lower right corner of the screen.
6. The unit will display a screen to confirm process settings.
Press the START button to begin process.
7. Follow on-screen instructions to complete cycle.

A/C System Service | ACX2180H | 20 en
9.3 Recovery process
1. From the main menu, select MANUAL, and then deselect
all options except for RECOVERY.
2. To change the service hose, touch the blue box at the
bottom of the screen that says LP-HP. A menu will pop up
that allows technician to select which hoses to perform
service through.
3. Press green arrow in lower right corner to begin service.
4. Follow on screen instructions to begin recovery process.
If no pressure is detected in the system, this function will not
start. Technician should ensure couplers are open. If the
system is empty, operator must exit and select a vacuum
process.
There is potential for unit to display an error during this service
for high internal pressure. This can occur due to high operating
temperatures or hot refrigerant gasses entering the ACX2180H
9.4 Vacuum process
1From the main menu, select MANUAL, and then deselect
all options except for VACUUM.
2To change the service hose, touch the blue box at the
bottom of the screen that says LP-HP. A menu will pop up
that allows technician to select which hoses to perform
service through.
3To adjust vacuum time, touch in the VACUUM TIME box.
The screen in Figure below will appear.
Fig. 17: Vacuum time adjustment
4Swipe finger up or down to adjust the hours and minutes,
then press the to accept or the X to cancel time
adjustment.
5If the vacuum test time needs adjusted, touch in the TEST
TIME box.
6Press green arrow in lower right corner to begin service.
7Follow on screen instructions to begin vacuum process
9.5 Charge process
1. From the main menu, select MANUAL, and then deselect all
options except for CHARGE.
2. To change the service hose, touch the blue box at the bottom of
the screen that says LP-HP. A menu will pop up that allows
technician to select which hoses to perform service through.
3. To adjust Charge amount, touch in the REFRIGERANT AMOUNT
box. The screen in Figure below will appear.
Fig. 18: Charge amount adjustment
4. Swipe finger up or down to adjust the refrigerant value to the
vehicle manufacturer’s recommended value, then press the to
accept or the X to cancel time adjustment.
5. Then click the Oil amount box to adjust oil amount and type.
Fig. 19: Oil amount adjustment
6. Swipe finger up or down to adjust the oil values, then press the 
to accept or the X to cancel oil value adjustments.
7. If desired, turn the Tracer injection on to inject UV Dye into the
vehicle A/C system.
8. Press the green arrow in lower right corner to begin service.
9. Follow on screen instructions to complete charge process.