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Application of the flush kit with adaptersSAT 4009 > < Rinsing (cleaning) the refrigerant circuit using the refrigerant R134a

Leon Mk2

Connecting diagram of different rinsing circuits
Connecting diagram of different rinsing circuits
  Note
t  The arrows in the illustrations indicate the flow of refrigerant during rinsing (during rinsing, the refrigerant flows in the opposite direction to normal air-conditioning operation and for this reason the high-pressure side of the air-conditioning service station is connected to the low pressure side of the refrigerant circuit going to the compressor)
t  These basic circuit diagrams show a refrigerant circuit with a hose clip and collector tank and a refrigerant circuit with an expansion valve, liquid tank and second evaporator (optional additional equipment for certain vehicles)
t  Depending on the architecture of the air-conditioning service station, there may be retention valves between the refrigerant circuit and the air-conditioning service station (in order to establish the correct direction of refrigerant flow for rinsing)
Refrigerant circuit with restrictor and reservoir
  Note
For vehicles with a hose clip and collector tank, remove the hose clip and the collector tank and reconnect the pipes that were disconnected in order to remove the hose clip. The pipe connections from the removed collector tank are interconnected using two adapters and the filling tube (from the Adapter kit, for SEAT vehicles -SAT 4009-)
   
1 - Air conditioner service station
q   With electronic module and rinsing program, for example Air-conditioning service station with rinsing equipment -SAT 4006D- or Air-conditioning service station without rinsing equipment -SAT 4006C- with kit SAT 4009
q   If an AC service station without flushing programme is used, this procedure must be performed manually (evacuate, flush 3 times with at least 4 kg of refrigerant evacuate refrigerant again).
2 - Air-conditioning service station refrigerant hose
q   from the high-pressure side of the air-conditioning service station (red in most cases) to the connection on the vacuum side of the compressor on the refrigerant circuit (largest pipe)
3 - Connection adapters for the low pressure side of the refrigerant circuit
q   The versions are different depending on the vehicle.
q   Belong to the Adapter kit, set for SEAT vehicles -SAT 4009-
4 - Connection adapters for the low pressure side of the refrigerant circuit
q   The versions are different depending on the vehicle.
q   On the refrigerant pipe from the compressor to the collector tank
5 - Connection to reservoir
q   The versions are different depending on the vehicle.
q   On the refrigerant pipe from the compressor to the collector tank
6 - Adapter to bridge removed reservoir
q   The versions are different depending on the vehicle.
q   Belong to the Adapter kit, set for SEAT vehicles -SAT 4009- → Chapter
7 - Refrigerant filling hose
q   Belong to the Adapter kit, set for SEAT vehicles -SAT 4009-
8 - Adapter to bridge removed reservoir
q   The versions are different depending on the vehicle.
q   Belong to the Adapter kit, set for SEAT vehicles -SAT 4009-
9 - Connection to reservoir
q   The versions are different depending on the vehicle.
10 - Evaporator
11 - Location of restrictor
q   Hose clip removed
q   Remove the hose clip → Heating, air-conditioning or → Air-conditioning
12 - Bolted joint on the refrigerant pipe
q   After the hose clip is removed tighten → Heating, air-conditioning or → Air-conditioning
13 - Condenser
14 - Connection for the high pressure side of the refrigerant circuit
q   The versions are different depending on the vehicle.
15 - Connection adapters for the high pressure side of the refrigerant circuit
q   The versions are different depending on the vehicle.
q   Belong to the Adapter kit, set for SEAT vehicles -SAT 4009-
16 - Filling tube for refrigerant circuit rinsing equipment
q   From the connection to the high-pressure side from the compressor on the refrigerant circuit (thinnest diameter) to the input of the refrigerant circuit rinsing equipment.
17 - Rinsing device for refrigerant circuits
q   Structures may differ depending on the machine evolution, for example refrigerant circuit rinsing equipment -Kit SAT 4009- for machines preceding the-SAT 4006D-
q   with filter, observation window, safety valve, refrigerant reservoir, etc. (depending on version)
q   Depending on the air-conditioning service station and architecture and the refrigerant circuit rinsing equipment, there may be a retention valve fitted to the output of the refrigerant circuit rinsing equipment (used to establish the correct direction of refrigerant flow when rinsing).
18 - Air-conditioning service station refrigerant hose
q   From the low pressure side of the air-conditioning service station (usually painted blue) to the output of the refrigerant circuit rinsing equipment.

Refrigerant circuit with expansion valve, liquid tank and second evaporator
  Note
t  This diagram of basic circuits shows the refrigerant circuit with an expansion valve, liquid tank and second evaporator (additional optional equipment for certain vehicles).
t  On vehicles with expansion valve and receiver, the expansion valve is removed and an adapter installed in its place. Depending on the vehicle, the receiver is also removed and the pipe connections to the receiver are connected using two adapters and a filler hose.
t  For vehicles fitted with only one evaporator, the components from item „16“are not fitted or not needed.
   
1 - Air conditioner service station
q   With electronic module and rinsing program, for example Air-conditioning service station with rinsing equipment -SAT 4006D- or Air-conditioning service station without rinsing equipment -SAT 4006C- with kit SAT 4009
q   If an AC service station without flushing programme is used, this procedure must be performed manually (evacuate, flush 3 times with at least 4 kg of refrigerant evacuate refrigerant again).
2 - Air-conditioning service station refrigerant hose
q   from the high-pressure side of the air-conditioning service station (red in most cases) to the connection on the vacuum side of the compressor on the refrigerant circuit (largest pipe)
3 - Connection adapters for the low pressure side of the refrigerant circuit
q   The versions are different depending on the vehicle.
q   Belong to the Adapter kit, set for SEAT vehicles -SAT 4009- → Chapter
4 - Connection adapters for the low pressure side of the refrigerant circuit
q   The versions are different depending on the vehicle.
5 - Adapter for removed expansion valve
q   The versions are different depending on the vehicle.
q   Belong to the Adapter kit, set for SEAT vehicles -SAT 4009-
6 - Evaporator
7 - Connection to receiver
q   The versions are different depending on the vehicle.
q   There are no vehicles with a dehydrator cartridge in the condensation liquid tank or with a liquid tank included in the condenser → Heating, air-conditioning or → Air-conditioning.
8 - Adapter to bridge removed receiver
q   Not fitted to all vehicles
q   The versions are different depending on the vehicle.
q   Belong to the Adapter kit, set for SEAT vehicles -SAT 4009-
9 - Refrigerant filling hose
q   For example filling tube (belonging toAdapter kit, for SEAT vehicles -SAT 4009-)
10 - Condenser
q   If the condenser is fitted with a liquid tank including a dehydrator cartridge then this cartridge must be removed (reseal the liquid tank close to the condenser following removal) → Heating, air-conditioningor → Air-conditioning
q   If the liquid tank is directly fitted to the condenser, then it can be removed and the liquid tank replaced after rinsing → Heating, air-conditioning or → Air-conditioning
11 - Connection for the high pressure side of the refrigerant circuit
q   The versions are different depending on the vehicle.
12 - Connection adapters for the high pressure side of the refrigerant circuit
q   The versions are different depending on the vehicle.
q   Belong to the Adapter kit, set for SEAT vehicles -SAT 4009-
13 - Filling tube for refrigerant circuit rinsing equipment
q   From the connection to the high-pressure side from the compressor on the refrigerant circuit (thinnest diameter) to the input of the refrigerant circuit rinsing equipment.
14 - Rinsing device for refrigerant circuits
q   These are different versions and different structures, for examplerefrigerant circuit rinsing equipment
q   with filter, observation window, safety valve, refrigerant reservoir, etc. (depending on version)
q   Depending on the air-conditioning service station and architecture and the refrigerant circuit rinsing equipment, there may be a retention valve fitted to the output of the refrigerant circuit rinsing equipment (used to establish the correct direction of refrigerant flow when rinsing).
15 - Air-conditioning service station refrigerant hose
q   From the low pressure side of the air-conditioning service station (usually painted blue) to the output of the refrigerant circuit rinsing equipment.
16 - Adapter for sealing the output of the second evaporator
q   Only necessary for vehicles with the optional „second evaporator“
q   Belong to the Adapter kit, set for SEAT vehicles -SAT 4009-
17 - Adapter for sealing the output of the second evaporator
q   Only necessary for vehicles with the optional „second evaporator“
18 - Connection on the low pressure side of the refrigerant circuit to the second evaporator
q   The versions are different depending on the vehicle.
q   Only necessary for vehicles with the optional „second evaporator“
19 - Connection on the high pressure side of the refrigerant circuit to the second evaporator
q   The versions are different depending on the vehicle.
q   Only necessary for vehicles with the optional „second evaporator“
20 - Adapter for removed expansion valve on second evaporator
q   The versions are different depending on the vehicle.
q   Only necessary for vehicles with the optional „second evaporator“
q   Belong to the Adapter kit, set for SEAT vehicles -SAT 4009-
21 - Second evaporator
q   Only necessary for vehicles with the optional „second evaporator“

Rinsing circuit with electric compressor
When replacing the electric compressor without mechanical error (e.g. defective board), you have to determine the amount of refrigerant oil of the electric compressor.
Amount determined, e.g. 50 cm³
A new compressor will be filled with 150 cm³ refrigerant oil.
–  Pour off 90 cm³ with a new electric compressor. 10 cm³ are extra.
  Note
t  In order for the refrgierant oil to drain from the electric compressor, that latter must be rinsed.
t  This schematic diagram shows a refrigerant circuit with electric compressor.
   
1 - Air conditioner service station
  Note
Rinsing the electric compressor is carried out manually.
–  In event of refrigeran residues, extract them.
–  Empty the oil tank used by the air conditioning service station.
  Note
With its own air conditioning service station, first the oil is separated in the vacuum phase and then stored in the oil tank.
–  Adjust the amount of refrigerant on the air conditioning service station to 2 kg and oil quantity to 0.
–  Install the flushing kit for refrigerant circuits -VAS 6336/1- or the flushing kit for refrigerant circuits -VAS 6337/1- between the air conditioning service station and the refrigerant return line.
–  Allow the refirgerant to drain for 10 minutes. Then observe the vacuum indicator. If the vacuum is sustained, fill the circuit with 2 kg refrigerant R134a. Then extract the refrigerant, drin and repeat the procedure.
2 - Refrigerant line of the air conditioning service station
q   of the vacuum side of the air-conditioning service station (normally blue) to the outlet of the rinsing equipment for the refrigerant circuit
3 - Rinsing device for refrigerant circuits
q   Different versions and different design e.g. flushing kit for refrigerant circuits -VAS 6336/1- or flushing kit for refrigerant circuits -VAS 6337/1-.
q   with filter, observation window, safety valve, refrigerant reservoir, etc. (depending on version)
q   Depending on the air-conditioning service station and architecture and the refrigerant circuit rinsing equipment, there may be a retention valve fitted to the output of the refrigerant circuit rinsing equipment.
4 - Filling tube for refrigerant circuit rinsing equipment
q   From connecting the high-pressure side of the compressor at refrigerant circuit (smaller diameter) to inlet of the flushing kit for refrigerant circuits -VAS 6336/1- or flushing kit for refrigerant circuits -VAS 6337/1-.
5 - Adapter for the connection of the high-pressure side of the refrigerant circuit.
q   Adapter kit for VW / Audi commercial vehicle refrigerant circuits -VAS 6338/1-Adapter no. 6338/3.
6 - High-pressure side of the electric compressor refrigerant line
–  Remove the centring pin.
7 - Electric compressor
8 - Low-pressure side of the electric compressor refrigerant line
–  Remove the centring pin.
9 - Adapter for the connection of the low-pressure side of the refrigerant circuit.
q   Adapter kit for VW / Audi commercial vehicle refrigerant circuits -VAS 6338/1-Adapter no. 6338/6.
10 - Refrigerant line of the air conditioning service station
q   From the high-pressure side of the air-conditioning service station (normally red) to the connection on the vacuum side via the motor to the electric compressor.

   

Application of the flush kit with adaptersSAT 4009 > < Rinsing (cleaning) the refrigerant circuit using the refrigerant R134a