Test conditions/preparations (Step 1)

  1. Connect the WAECO filling station to the low pressure side (L.T.) and the high pressure side (H.T.) on the air conditioner’s service connection.
  2. On vehicles with mechanical a thermostat, it must be ensured that the thermostat setting is correct and it should be adjusted if necessary (setting values: final position clockwise, 1/4 turn back, then adjustment).
  3. Start the engine and set the engine speed at 1500 – 2000 rpm.
  4. Start the air conditioning system by pressing air conditioning button.
  5. Select fan level 2 or 3.
  6. Measure the temperature in the vehicle and in the workshop with the thermometer.


For outside temperatures above 28°C, the recirculation function must be selected (refer also to the vehicle manual) in order to prevent hot air from entering from the outside.

If the cabin temperature is lower
than the room temperature:

  • Let the air conditioner work under these conditions for 5 – 10 minutes.
  • Then carry out a performance check on the air conditioner.

If the cabin temperature is higher
than the outside temperature:

  • Open windows and doors. Wait until the indoor and outdoor temperatures have levelled off (or until a fairly even temperature level is achieved).
  • Close windows and doors.
  • Then carry out a performance check on the air conditioner.

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 UK Ltd.
Dometic House, The Brewery,
Blandford St. Mary
Dorset DT11 9LS

Tel +44 (0) 344 626 0135
Fax +44 (0) 344 626 0143
Mail automotive@dometic.co.uk
Net www.dometic.co.uk