Desiccant Bag/Dryer Cartridge, Removing And Installing: Installing
WARNING: This page is about a different car, the 2021 Audi S4 and 2021 Audi A4 Quattro. However, it is still accessible from the selected car via links, so may be relevant.
Install in reverse order of removal and note the following:
- Check the receiver/dryer -item 7-, if there is contamination, clean the refrigerant circuit or replace the condenser, if necessary. Refer to A/C System, General Information or REFRIGERANT CIRCUIT, CLEANING .
- Check the receiver/dryer and the threads on the condenser via the opening for damage. Refer to -item 6-, OVERVIEW - CONDENSER .
- Replace the plug -A- and then both O-ring seals (included in the delivery of the dryer. Refer to OVERVIEW - CONDENSER and Parts Information).
- Coat the O-ring seals lightly with refrigerant oil prior to installation. Refer to REFRIGERANT CIRCUIT SEALS .
- Check the O-ring seals for proper seating in grooves of the respective components.
- Keep the desiccant bag sealed in its air-tight package as long as possible. Open the package just before installing the dryer cartridge in the receiver/dryer of the condenser. After opening the dryer cartridge absorbs moisture from the surrounding air in a very short time and becomes unusable. Refer to OVERVIEW - CONDENSER .
-- Remove the desiccant bag from its package and insert in the receiver/dryer. Refer to OVERVIEW - CONDENSER .
-- Install the plug -A- with the O-ring. Refer to OVERVIEW - CONDENSER .
-- Evacuate and charge the refrigerant circuit. Refer to Refrigerant Circuit or Working with A/C Service Station (1 Of 2) / Working with A/C Service Station (2 Of 2) .
-- Start the A/C system after charging the refrigerant circuit. Refer to A/C SYSTEM, STARTING AFTER CHARGING REFRIGERANT CIRCUIT .