Information Practical hints and other useful Copyright information. Multi-step Instruction consisting of several Software and data are the property of MAHLE or its operation steps. Instruction consisting of one step. suppliers and protected against copying by copyright One-step operation laws, international agreements and other national legal ...
Basic rules product. The disclaimer of liability does not apply to damages caused by intent or gross negligence on the part of MAHLE. The contractor is bound to ensure that all electrical equipment and operating material is set up, modified...
Such mixtures are a potential hazard and may lead • to fire or explosions and thus cause damage or Position the ACX2281 on all four wheels on a flat, vibration- injury. proof surface so that proper operation of the scales is •...
• Inspect the outside diameter of the white sample filter element position. Never lay the ACX2281 on its side, as oil could before and after each use of this unit. As soon as red spots then escape from the vacuum pump or the built in compressor begin to appear on any portion of the white element outside could be damaged.
ACX2281. The refrigerant oil collected in the process is drained into the used oil bottle at the ACX2281. • Vacuum phase: A vacuum is generated in the vehicle air con- ditioning system.
Description of unit | ACX2281 | 9 en Product description Application ACX2281 is suitable for vehicles with a conventional engine as well as for hybrid and electric vehicles. ACX2281 features all the functions required for vehicle A/C service. • The following functions can be implemented: •...
10 | ACX2281 | Description of unit Description of unit Fig. 2: Rear View Service Hoses Fig. 1: Front Right View Vent Rear Handle Hose Storage Tool Tray Status indicator light LCD display Low Pressure Gauge High Pressure Gauge Front Cover...
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Description of unit | ACX2281 | 11 en Fig. 4: Internal components Accumulator/Oil separator Combo filter Compressor Vacuum pump Refrigerant tank HS compressor oil separator Manifold...
12 | ACX2281 | Description of unit To select a function in the menu, press the text name of the function and the selection occurs when finger is released. The selected entry is highlighted with a different color (from blue to gray) and the menu screen pages changes.
5.4.2 Locking caster brakes Rolling of the ACX2281 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.
Description of unit | ACX2281 | 14 en Refrigerant Identification unit The refrigerant identification unit permits precise determination of the type of refrigerant as to prevent cross contamination by other refrigerants. Only after successful identification of refrigerant, service may begin on the vehicle.
15 | ACX2180 | Equipment installation 6 Equipment installation Unpacking ACX2281 Warning – Risk of personal injury! Incorrect handling could cause equipment to • Slowly lower the unit from pallet by means of the rear overturn. wheels (Fig. 12). The manufacturer disclaims all responsibility for...
Set the ACX2281 on a flat, vibration proof surface. — Gas weight check (vacuums entire Actuate the caster brake to stop the ACX2281 from rolling. refrigerant circuit to ensure no Connect the power supply cable to the power supply. contaminants are in system prior to Switch on the main switch.
Firmly connect the service quick-release couplings to the service hoses. Wear protective goggles. Wear protective gloves. Before the ACX2281 can be used, the internal refrigerant bottle must be filled with liquid refrigerant. Use only R1234yf refrigerant. A menu-driven refrigerant check is performed before filling the internal refrigerant bottle.
In the instance where only a LP coupling is available for A/C The ACX2281 is only to be operated with R1234yf service, the ACX2281 will charge the system with 50% of the refrigerant. Check with refrigerant is used for the vehicle total charge amount with the vehicle A/C compressor off.
19| ACX2281 | A/C System service 9 A/C system service This process may need to be repeated a number of times Refrigerant identification unit depending on the amount of pressure inside the hoses. 9.1.1 Refrigerant analysis After all pressure has been released, connect low side Oil contamination will damage the refrigerant coupler to Parking/flush adapter and open valve.
A/C System service | ACX2281 | 20 en Automatic cycle setup Manual cycle setup Access to automatic cycles is available through the main Access to manual cycles is available through the main menu by menu by selecting AUTOMATIC. selecting MANUAL CYCLES.
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 ACX2281 Vacuum process 1 From the main menu, select MANUAL, and then deselect all options except for VACUUM.
When servicing a vehicle, the type of oil in the vehicle's A/C system should be noted to prevent a cross- contamination inside the ACX2281. If a PAG system is serviced and another vehicle with a POE system is to be serviced next, a flush routine must be performed to prevent a cross-contamination of the oils.
Also, if there is an insufficient quantity, the ACX2281 may not be able to operate efficiently. In the event of an excessive quantity, there may not be space for the refrigerant recovered from the vehicle air conditioning system.
Maintenance | ACX2281 | 24 en 10.3 Self test 10.6 Long life pump test This test is designed to check the internal ACX2281 circuit for any leaks. The Long Life Pump function equipped on the ACX2281 enables the unit to optimize the vacuum pump oil use and To perform Self test: avoid the need to replace after every 60 hours of operation.
Each filter is marked with a unique code. This code must be entered when replacing the filter. It is not possible to operate the ACX2281 if the same code is re-used. It is advisable to keep a supply of filters in stock to avoid downtimes due to the unit being disabled.
3. Pull the paper out of the housing as shown in Fig. 30 and White sample filter close the lid. 10.11 Periodic checks The ACX2281 service station must be checked over regularly as set by local legislation. The following checks should be performed to ensure safe and reliable operation: —...
Description Order number Refrigerant identification unit 360 82944 00 White sample filter 360 82958 00 Additional spare/replacement parts are available through the service centers authorized by MAHLE or by its reseller. Contact technical support for replacement parts not listed above.
Maintenance | ACX2281 | 34 en 12.4 Other checks/maintenance/repairs Other checks/maintenance/repairs Result of check Maintenance Technician Date Maintenance technician identification (pass/fail) signature and stamp...