Related Manuals for Waeco AirCon Service ASC 7.3
Summary of Contents for Waeco AirCon Service ASC 7.3
- Page 1 ASC 7.3, 7.4 A/C service unit Operating Manual............
- Page 2 EN Copyright © 2025 Dometic Group. The visual appearance of the contents of this manual is protected by copyright and design law. The underlying technical design and the products contained herein may be protected by design, patent or pending patent. The trademarks mentioned in this manual belong to Dometic Sweden AB.
- Page 3 EN English Important notes..................................3 Cyber security................................... 3 Target Group.....................................3 Hotline..................................... 3 Explanation of symbols................................3 Safety instructions..................................4 Warnings on the A/C service unit..............................5 Scope of Delivery..................................6 Accessories....................................6 Intended use..................................... 6 Technical description..................................7 Overview of the A/C service unit..............................8 Using the display..................................
- Page 4 EN NOTE Supplementary information for operating the product. 6 Safety instructions WARNING! Failure to obey these warnings could result in death or serious injury. Observe national work safety regulations. Observe the safety instructions in this operating manual. The A/C service unit may only be used by personnel who are able to demonstrate the appropriate specialist training and are familiar with the operation and basic principles of the A/C service unit, of air conditioning systems and of refrigerants.
- Page 5 EN Do not carry out maintenance work on the vehicle air conditioning system when the engine is at operating temperature. When perform- ing maintenance on the vehicle air conditioner, the surface temperature of attachment parts or surrounding parts must be less than the re- frigerant's flashpoint: •...
- Page 6 EN 8 Scope of Delivery The A/C service unit was tested for leaks before shipping. After delivery, check that all the parts listed below are present and undamaged. If any parts are missing or damaged, notify the company responsible for transport immediately. Description A/C service unit NOTICE! Damage hazard...
- Page 7 EN Dometic reserves the right to change product appearance and product specifications. 11 Technical description 11.1 Safety devices • Pressure monitor: Switches the compressor off if normal operating pressure is exceeded. • Pressure relief valves: Additional safety mechanism to protect lines or vessels from bursting if the pressure continues to rise despite the safety pressure monitor.
- Page 8 EN 12 Overview of the A/C service unit Display Keypad Front cover Front wheels with wheel stops USB port Printer (optional) Service coupling for low pressure connection (blue) Service coupling for high pressure connection (red) Main switch...
- Page 9 EN Drained oil receptacle NOTE The drained oil receptacle must be installed. Otherwise the A/C service unit does not start correctly. 13 Using the display The display shows status information and, if applicable, the name of menus you can open. Settings and values are entered in the corresponding menus.
- Page 10 EN To enter values or text use the keypad of the device and the cursor keys. To switch between upper and lower case press the key. To delete a character press the key. To delete the current line press and hold down the key.
- Page 11 EN 14.2 Setting the language and date and time The A/C service unit displays the language and date and time setting menu. Date and time are required for logging of the service procedures. The date and the time are printed along with the company data on every service log. The chosen language is highlighted.
- Page 12 EN 14.3 Selecting the refrigerant On initial start-up the A/C service unit displays the refrigerant selection menu. The chosen refrigerant is highlighted. NOTE The adjustment of the refrigerant is a one-off process. Choose the desired refrigerant. Press to confirm. Follow the instructions on the display. The A/C service unit sets up the refrigerant: •...
- Page 13 EN The chosen length is highlighted. 1. Enter the hose length in centimetres. 2. Press to select and confirm. 14.5 Entering the company data The company data is printed out with every service log. You can enter four lines, each with up to 30 characters. The display shows the number already entered letters.
- Page 14 EN 1. Enter the name, the address, the country, and the telephone number of the company. 2. Press to select and confirm. 14.6 Editing default values The A/C service unit has preset values for the most important service tasks. The default values appear automatically when you select the respective menu.
- Page 15 EN Push the containers into the snap locks: • Container Oil1 for fresh oil/UV tracer (13) • Container Oil2 for fresh oil/UV tracer (12) • Drained oil receptacle (11) 14.8 Setting the container size Fresh oil and UV contrast agent can be kept in containers of 150 mL, 250 mL or 500 mL (accessories). You must enter the size of the container in the A/C service unit.
- Page 16 EN 3. Choose the corresponding container sizes. 4. Press to continue. 5. Perform a hybrid flushing after changing the oil type. 14.9 Filling up the internal refrigerant container When the A/C service unit is started for the first time, the A/C service unit displays Error 12, because the internal refrigerant vessel must be filled from an external refrigerant vessel with at least 2000 g of refrigerant.
- Page 17 EN 5. Enter the required amount and press to confirm. The internal refrigerant vessel is filled. When the filling process is finished, this will be confirmed by an acoustic signal. 6. Follow the instructions on the display. 7. When the process is completed disconnect the external refrigerant vessel from the A/C service unit. The A/C service unit is now ready for operation.
- Page 18 EN • Evacuating the system • Leak test/vacuum check • Filling with new oil to the required quantity • Filling with UV additive • Filling of refrigerant After each process has been performed a service report is printed. Subsequent actions are only initiated once the preceding action has been com- pleted successfully.
- Page 19 EN NOTE The USB flash drive must be formatted with the FAT32 file system. Each report is saved in two formats: • As an HTML file (to be opened with any internet browser) • As an XLS file (to be opened with Microsoft Excel) The report may contain a logo (e.g.
- Page 20 EN 15.4 Testing the air conditioning system without refrigerant service NOTE The air conditioning system can only be tested on vehicles with a low pressure port and a high pressure port or with a low pres- sure port only. If you only test the function of a vehicle air conditioning system without drawing off and recycling the refrigerant, the vehicle air conditioning sys- tem would lack the refrigerant remaining in the service hoses of the air conditioner after the test.
- Page 21 EN When used in Client Mode the ASC Wi‑Fi is connected to your existing Wi‑Fi network and you can use all devices connected to this network to connect to the A/C service unit. The A/C service unit always starts in the Access Point Mode. To change into the Client Mode (Connecting to the A/C service unit in Client Mode on page 23).
- Page 22 EN Connecting to the A/C service unit in Access Point Mode 1. If you use a device with an active SIM card (e.g., a cell phone) enable the “airplane mode” on your device. 2. Ensure Wi‑Fi is enabled on your device. 3.
- Page 23 EN On a tablet and on a cell phone the menu bar is placed at the bottom. Icon Command Function Sensors Shows the A/C service unit's current operating values. Send task Creates a task and sends it to the A/C service unit Task history Shows all finished tasks.
- Page 24 EN Creating and processing a task in the A/C service unit Instead of creating a task in the A/C service unit you can create a task via the browser and send it to the A/C service unit. 1. Enter the requested values like data plate, client name, etc. 2.
- Page 25 EN 15.6 Free Selection The Free Selection menu is used to perform air conditioning maintenance step-by-step. You can perform the same processes as in the Short Selection menu but also omit individual procedures. In addition, it is possible to enter the values for each individual process using the keypad. You can also enter the vehicle data for the service report in this menu.
- Page 26 EN 5. If desired, deactivate a phase by setting the corresponding amount values to 0. 6. Press to continue. 7. Follow the instructions on the display. When the process is sucessfully completed, you can save a service report: Export CSV • To save a csv file on a flash drive press the Print service report •...
- Page 27 EN 16 Service tasks 16.1 Leak test Check the A/C service semiannually for leaks in accordance with the applicable legal requirements. Use an electronic leak detector for this pur- pose. 16.2 Resetting the counters Aer you have finished one or more service tasks you must reset the respective counters. The following counters can be reset: •...
- Page 28 EN 16.3 Resetting the oil scales NOTE In order for the oil quantities and the UV additive to be measured correctly, the zero point of the scales must be checked regularly and reset if necessary. Resetting is necessary: • If the quantity in a container deviates by more than 10 mL from the target value •...
- Page 29 EN 3. Follow the instructions on the display. The service hoses will now be drained and the A/C service unit's basic menu will be activated. The compressor has produced a slight internal vacuum so that the filter can be replaced with minimal refrigerant loss. 4.
- Page 30 EN 8. Insert the new dryer and tighten the screw to max. 15 Nm. 9. Reconnect the power plug. 10. Switch on the A/C service unit. The inverter performs a self-test. 11. Reset the Refrigerant extracted from system counter (Resetting the counters on page 27).
- Page 31 EN 4. Follow the instructions on the display. 16.6 Changing the vacuum pump oil WARNING! Electrocution hazard Touching uninsulated parts may result in serious injury. Switch off the A/C service unit and unplug it from the power supply before open- ing the housing.
- Page 32 EN 4. Unscrew the oil filling plug (G). 5. To drain the oil, unscrew the oil drain plug (J). 6. Once the oil has been completely drained from the pump housing, screw the oil drain plug (J) back in. 7. Top up with new vacuum pump oil to the middle of the sight glass (H) and screw the oil filling plug (G) back in. 8.
- Page 33 EN 6. Press to update the software or database. The A/C service unit shows the progress of the update. After the update the A/C service unit sets the default settings. The A/C service unit then restarts and the standby menu appears. 7.
- Page 34 EN After 12 months or 40 h After 150 kg To do After 60 months or 24 months Check the Filter Gasanalyzer (if installed) and replace if necessary Calibrate the pressure transducer Check the digital manometers via reference Exchange the coarse filter Exchange Low Emission waste oil bottle Check the service coupler function Check the service hose...
- Page 35 EN Problem Possible cause Suggested remedy The display shows Printer not in line! Message indicates a printer fault. Check if there is paper in the printer. Carry on? Check if the printer is switched on (yellow LED must be lit constantly). Check that the cover is closed properly.
- Page 36 EN Disposing of used fluids • Used oil is hazardous waste. • Do not mix used oil with other fluids. • Prior to disposal keep used oil in suitable containers. Disposing of packaging material • Dispose of the cardboard packaging material with other waste paper. •...
- Page 37 EN ASC 7.4 0.32 kW Hermetic compressor output 150 kg Dryer filter output 60 h Vacuum pump oil service life 28 kg Filling cylinder accumulator capacity 62 dB(A) Noise emission* ± 15 g Accuracy of the electronic scale for refrigerant ± 1 g Accuracy of the electronic scale for old/new oil ±...
- Page 38 EN 19.1 Flowchart ASC 7.3/ASC 7.4...
- Page 39 EN Legend...
- Page 40 EN Item Description Oil bottle Oil bottle UV-dye bottle UV-dye bottle Refrigerant tank Oil separator compressor Main Destiller Used-oil bottle Compressor Coarse filter Dryer filter Main valve manifold LE valve manifold N2 valve manifold Vacuum pump High pressure safety switch Pressure sensor HP Pressure sensor LP Check valve refrigerant tank...
- Page 41 EN Item Description Solenoid valve AU L7/12 Refrigerant hose Refrigerant hose Solenoid valve RE...
- Page 42 EN 19.2 Circuit diagram...
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