A/C Service Station On Refrigerant Circuit, Connecting

WARNING: This page is about a different car, the 2022 Volkswagen ID.4 and 2021 Volkswagen ID.4. However, it is still accessible from the selected car via links, so may be relevant.

Special tools and workshop equipment required

Air Conditioning Service Unit R744 :VAS581009

Connecting

Work procedure may vary depending on the type of tools selected (the tool-specific operating instructions should therefore be followed).
The procedure must be performed as described in the operating instructions of the Air Conditioning Service Unit R744 :VAS581009 . Refer to Operating Instructions.
Depending on the procedure that is to be performed with the A/C Service Station, the refrigerant hoses on the A/C Service Station are either pre-filled or evacuated. Therefore, always follow the instructions that are shown on the A/C Service Station display. Refer to the A/C Service Station Operating Instructions.

The charging hoses are to be connected as follows to prevent the ingress of air or moisture into the refrigerant circuit:

-- Deactivate drive ready mode and switch off all electrical equipment.

-- Connect the A/C Service Station to the power supply.

-- Turn on the A/C Service Station and start operating it according to its operating instructions. Refer to the A/C Service Station Operating Instructions.

-- Remove the caps from the service connections (refer to the vehicle-specific refrigerant circuit). Refer to Refrigerant Circuit (vehicle-specific Service Information).

-- If the testing or measuring procedures are to be performed with the A/C Service Station, evacuate the refrigerant hoses of the A/C Service Station if necessary and fill with refrigerant. Refer to the A/C Service Station Operating Instructions.

-- Check the refrigerant circuit service connections for debris and corrosion and if necessary clean.

Dirt or a rough surface on the service connections due to corrosion can cause seal damage, which can then cause premature failure of the quick-release couplings.

-- Connect the quick-release couplings to the refrigerant circuit service connections.

CAUTION:

Risk of damaging the A/C compressor or the A/C service station.

A short circuit between the high and low pressure side is possible when opening the valves with the A/C system is on.

- Never open the valves in the high or low pressure side when the A/C system is on.

-- Install the hand wheel for the low pressure side quick-release coupling connection just far enough into the until the valve is securely opened inside the service connection (pay attention to the pressure gauge, do not put too much pressure on the valve).

-- Install the hand wheel for the high pressure side quick-release coupling connection just far enough until the valve is securely opened inside the service connection (pay attention to the pressure gauge, do not put too much pressure on the valve).

-- Perform the specified procedures on the refrigerant circuit using the A/C Service Station.

Refer to REFRIGERANT CIRCUIT, DISCHARGING .
Refer to REFRIGERANT CIRCUIT, EVACUATING .
Refer to REFRIGERANT CIRCUIT, CHARGING .
Refer to A/C SERVICE STATION, SWITCHING OFF AND DISCONNECTING FROM REFRIGERANT CIRCUIT
Refer to REFRIGERANT, ADDING TO INNER PRESSURE RESERVOIR .
Refer to A/C SERVICE STATION, DISCHARGING .