Filling With Leak Detection Additive When The Refrigerant Circuit Is Empty

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Fig 1: Identifying Leak Detection Additive Cartridge & One Unit

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

The cartridge -A- contains 15.4 ml of leak detection additive (one unit -B- corresponds to 2.5 ml).

-- Assemble the Leak Detection Kit VAS 6201A item -1- with the cartridge item -2- Leak Detection Kit - Cartridge VAS 6201/2.

Fig 2: Assembling Hand Pump VAS 6201 With Cartridge - VAS 6201/2

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Insert the Leak Detection Kit - Filler Tube VAS 6201/8 (refer to REFRIGERANT CIRCUIT, TRACING LEAKS, WITH Leak Detection System VAS 6196 OR Leak Detection Kit VAS 6201A OR SUCCEEDING MODEL ) into the hand pump.

-- Open the hand pump service valve.

Leak detection additive is best added to empty refrigerant circuit via opened connection.

Fig 3: Tightening Toggle On Hand Pump Until Leak Detection Additive Comes Out Of Tube

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Open an easily accessible connection point on refrigerant circuit

-- Cover area around connection point with foil or absorbent paper.

-- Hold tube upwards.

-- Tighten the toggle on the hand pump until the leak detection additive comes out of the tube.

-- Add 2.5 ± 0.5 ml (milliliter = cm³ ) of leak detection additive to the refrigerant circuit.

NOTE:

If leak detection additive was already added to the refrigerant circuit for an earlier repair, note the following: Only add new leak detection additive if the refrigerant oil will be replaced. If only a portion of the refrigerant oil was replaced, only add a proportionate amount of the leak detection additive. For example, if 100 ml of refrigerant oil was replaced in a vehicle with 250 ml, add only 1 ml (cm³ ) of leak detection additive.

-- Replace the O-rings on opened connection point.

-- Assemble refrigerant circuit

-- Apply a label near the service connection stating that leak detection additive was added to the refrigerant circuit.

-- Evacuate and recharge refrigerant circuit according to specification, refer to REFRIGERANT CIRCUIT WITH A/C SERVICE STATION, DRAINING and REFRIGERANT CIRCUIT WITH A/C SERVICE STATION, FILLING .

-- Start the A/C system.

NOTE:

The A/C system must run for at least 60 minutes so the additive distributes itself through the entire refrigerant circuit. The compressor must be running. Depending on the size of the leak, it may become visible within that time.

-- Find the leak in the refrigerant circuit with the UV lamp VAS 6196/4, refer to REFRIGERANT CIRCUIT, TRACING LEAKS, WITH LEAK DETECTION SYSTEM VAS 6196 OR LEAK DETECTION KIT VAS 6201A OR SUCCEEDING MODEL .

NOTE:

Remove existing leak detection additive in the engine compartment or from the refrigerant circuit components using Leak Detection Kit - Cleaning Solution VAS 6201/3.

Leak detection additive with filled refrigerant circuit, filling

NOTE:

A small quantity of leak detection additive remains in the service connection. Carefully remove this residual amount so a leaking area is not detected erroneously upon a later leak detection.

The cartridge -A- contains 15.4 ml of leak detection additive (one unit -B- corresponds to 2.5 ml).

Fig 4: Identifying Leak Detection Additive Cartridge & One Unit

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Switch off ignition.

Fig 5: Assembling Hand Pump VAS 6201 With Cartridge - VAS 6201/2

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Remove sealing cap from service connection of low pressure side in refrigerant circuit.

-- Assemble the Leak Detection Kit VAS 6201A item -1- with the cartridge item -2- Leak Detection Kit - Cartridge VAS 6201/2.

NOTE:

Make sure the hand pump hose is completely filled with leak detection additive.

-- Place the quick-release coupling on the low pressure side service connection and tighten the hand wheel to open the service coupling. Hold the hose upward and tighten the handle of the hand pump just enough until the leak detection additive starts to emerge from the tube.

-- Cover area around service connection on vehicle with foil or absorbent paper.

Fig 6: Adding Leak Detection Additive To Refrigerant Circuit

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Tighten the toggle on the hand pump to add 2.5 ± 0.5 ml (milliliter = cm³ ) of leak detection additive to the refrigerant circuit.

-- Close the service coupling and remove it from the service connection.

Fig 7: Identifying Leak Detection Additive Label

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Remove the rest of the leak detection additive from the service connection, for example with absorbent paper.

-- Seal service connection with sealing cap.

-- If necessary, clean area around service connection using cleaning agents.

-- Place a label next to the service connection stating that leak detection additive was added to the refrigerant circuit.

-- Start the A/C system.

NOTE:

Remove existing leak detection additive in the engine compartment or from the refrigerant circuit components using Leak Detection Kit - Cleaning Solution VAS 6201/3.