ASC 2500 G Low Emission

  • ASC 2500 G Low Emission
ASC 2500 G Low Emission

Eco-friendly technology for use with R 134a: the ASC 2500 G Low Emission recovers almost 100% of the refrigerant during A/C service.

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Product Description

Environmentally sound and profitable

Eco-friendly technology for use with R 134a: the ASC 2500 G Low Emission recovers almost 100 % of the refrigerant during A/C service. How does it manage to do so? Refrigerant loss mainly occurs in the phase when the refrigerator oil is forced out from the used oil container. The ASC 2500 G Low Emission uses a pressure-tight container. Moreover, the refrigerant escaping during used oil discharging is collected in the used oil container, recovered and returned to the refrigerant tank. The result is a refrigerant loss rate of close to zero percent! The accurate identification of the amount of recovered refrigerant also allows conclusions to be drawn about the tightness of the air conditioner (diagnosis tool).

ASC 2500G in detail
  1. Swivel and tilt manometer panel – easy to read from every angle
  2. Data printer to be activated as required, with multiple print-out and paper feed options
  3. Large, high-quality keypad for reliable data entry
  4. Patented, professional feeding system for fresh oil and UV additive
  5. High-contrast LED display for process supervision from a long distance
  6. 3 separate weighing cells for oil management (used oil / fresh oil / UV additive) are a distinctive feature of the fully automatic unit
  7. Large display for easy readability and reliable data entry
  8. Refrigerant tank with preassembled condenser and fan for accurate indication of the recovered amount of refrigerant
  9. Special, 8-bearing weighing platform with high-capacity weighing cell (100 kg load capacity). User friendly: no calibration needed
  1. Service-friendly low-emission vacuum pump with 60-hour oil change interval
  2. Increased pressure due to heating band on the refrigerant tank, for complete charging of the A/C system even at high ambient temperature
  3. Patented, low-emission used oil container prevents refrigerant loss during used oil purging; the refrigerant recovered with the used oil is supplied to the refrigerant tank and included in the weighing
  4. Optional accessory: flushing kit for the service hoses and the manifold of the ASC. Especially recommendable where the ASC is also used on hybrid vehicles, to switch to non-conducting POE oil
  5. USB interface included as standard on all ASC G-series A/C service units: convenient software and database updates by USB stick
    NEW: 4 steps to a truly complete discharge – now made visible on the new display

Close to 100 % discharge in four steps

Most A/C service units available in the market today are using three major process steps: refrigerant recovery via the compressor, evacuation of the refrigerant circuit via the vacuum pump, and refrigerant recharging. WAECO ASC Low Emission service units are using an additional process step to ensure that close to 100 % of the refrigerant can be recovered.

In this process step the vacuum pump teams up with the compressor to recover also the residual amount of refrigerant contained in the oil. This additional step – indicated by the orange ECO LED on the new operator display – gives two major advantages. First, there’s virtually no refrigerant lost or escaping into the environment. Second, the exact amount of the recovered refrigerant can be identified in the subsequent weighing. This avoids misinterpretation with regard to the tightness of the A/C system, which would otherwise lead to unnecessary troubleshooting and costly repairs.

ASC 2500G manometer panel

The 4 steps of the WAECO Low Emission service process

Refrigerant recovery: The refrigerant is recovered from the vehicles A/C system with the help of the compressor of the A/C service unit.

Used oil drainage: The vacuum pump teams up with the compressor to recover also the residual amount of refrigerant contained in the oil, also during the drainage of the used oil. No refrigerant lost or escaping into the environment.

Vacuum phase: The vacuum pump is switched on automatically and ensures deep down evacuation of the A/C system. Since the vacuum pump is connected to the internal container of the Low Emission service unit, the refrigerant does not escape into the environment now, but is collected in the internal container.

Refrigerant recharging: The A/C system is charged with the vehicle-specific amount of refrigerant from the tank of the A/C service unit.

Please note that the sustainable and economical use of R 134a will be an issue of growing importance in the future!
The EU directive about the shortage of available R 134a resources has already been in force since 1st January 2015.


The new F-gas regulation of the European Union has been in force since January 1st 2015. Aiming at a reduction of the use of fluorinated greenhouse gases, it regulates, among other things, the import quantities for the marketing of R 134a refrigerant. One thing is for sure already: R 134a is going to run short and will become very expensive. Refrigerant loss will be something no workshop can afford in the future.

Invest in a low-emission service unit now to be able to offer your customers an attractive and cost-efficient A/C service in the long run. Dometic WAECO’s well engineered low-emission concept keeps you a step ahead of your competitors.

Phase-down timetable for R 134a

Years Reduction
2015 100%
2016 – 2017 93%
2018 – 2020 63%
2021 – 2023 45%
2024 – 2026 31%
2027 – 2029 24%
2030 21%
Phase-down timetable for R 134a
Phase-down timetable for R 134a

Also great as a diagnosis tool

The ASC 2500 G Low Emission integrates all refrigerant storage components on the weighing platform. That means the complete amount of refrigerant contained in the unit can be recorded and the amount of the recovered refrigerant can be exactly determined. This in turn will tell the operator about potential leaks in the A/C system. The accurate diagnosis function of the ASC 2500 G Low Emission is also very useful with regard to decreasing refrigerant charging amounts on modern-day vehicles. In the compact car segment we already see models with charging amounts of less than 300 g (e.g. Daihatsu Cuore). Older A/C service units won’t be able to charge these systems with the required accuracy. Excessive or insufficient charging would entail major problems.

ASC 2500 G Low Emission in workshop
  • Sturdy metal housing
  • Charging cylinder storage capacity: 16 kg, vacuum pump capacity: 5 cars/h
  • Humidity free storage and feeding system for fresh oil and UV additive including test bottles
  • Print-out of important service data, several print-outs possible
  • Fully automatic refrigerant recycling, oil and additive management
  • Automatic vacuum check
  • Automatic charging of leak detection additive
  • Integrated refrigerant charging and recovery amount management
  • Integrated charging amount database
  • Complies with SAE J 2099 and SAE J 2788
  • Close to 100 % refrigerant recovery
  • Virtually 0 % service emission thanks to patented used oil container and Low Emission concept
  • Personalised charging amount database
  • Operator guidance via large display
  • Swivel and tilt manometer panel (patented)
  • Swivel-mount display and information unit (patented)
  • Heated charging cylinder for high-speed charging, heat-up also possible during the charging process
  • Special, 8-bearing weighing platform
  • Special air conditioner flush function
  • Large recessed tray for tools
  • Also suitable for hybrid vehicles if the optional flushing kit for the ASC’s internal circuit was installed
  • Patented used oil container
  • USB interface
  • Soft graphic display

Individual user code

To prevent unauthorised use of WAECO A/C service units, up to 10 user names can be programmed in combination with individual PIN codes.

Personalised charging amount database

ASC-series units give you the option to create a personalised charging amount database for 100 different vehicles.

Low Emission

Virtually no refrigerant escaping into the environment and identification of the exact amount of the recovered refrigerant in the weighing procedure avoids unnecessary troubleshooting.

USB interface

Via the USB port you can simply update the software of the service unit. Or export important data to a USB stick for further processing on a laptop or PC.

Product data

Power Supply

220/240 V – 50/60 Hz

Suitable for refrigerant

R 134a

Purity of recovered refrigerant according to SAE J 2099


Refrigerant recovery rate in kg/h


Vacuum pump capacity

5 cars/h

Performance of the hermetic compressor in kW


Dry filter capacity in kg


Refrigerant recycling rate

Close to 100 %

Can be used as diagnosis tool


Charging cylinder/useful capacity (kg)


Charging amount indicated by


Refrigerant analysis




Purging of non-condensable gases

automatic / electronic

Purging of used oil




Vacuum check


Nitrogen leak check


Injection of leak detection additive


Injection of oil into the A/C system


Refrigerant charging


High/low pressure indicated by


Vacuum indicated on


Total process control via display


Option to set the evacuation time


Protocol print-out with printer


USB connection for software- and database updates




Service hoses (SAE standard), 3 m


Service hoses (SAE standard), 8 m


Valve adapter for WAECO refrigerant bottles


Operating instructions


Adapter for 500 ml fresh oil and UV tracer dye bottle


Used oil container (500 ml)


Hermetically closed used oil container


Heated refrigerant tank / fluid pump

yes / no

Dust cover


Goggles / safety gloves


Test bottles UV additive for approx. 10 applications


Bottle of fresh PAG oil ISO 46, 500 ml


Bottle of fresh PAG oil ISO 100, 500 ml


Bottle of fresh POE oil SE 55, 500 ml


Dimensions (W x H x D, in mm)

560 x 1300 x 650

Weight (kg)




Professional standard

ASC by WAECO is, and has been for years, the abbreviation for excellent quality and cutting-edge technology in A/C service equipment. The series is constantly improved and complemented to meet future requirements. All ASC service units are state of the art and fully automatic

Be a successfull A/C professional

Use our comprehensive range of equipment for service and repairs on automotive A/C systems to make your company an efficient and successful A/C workshop. Polar bear Eddie supports you with useful information and advertising material that will keep you an Eddie nose length ahead of your competitors!


Dometic WAECO International GmbH
Hollefeldstraße 63
D-48282 Emsdetten

Tel +49 (0) 2572 879-0
Fax +49 (0) 2572 879-300