Get Air conditioning system -> 1.5.8 Renewing desiccant cartridge / desiccant bag with no need to clean refrigerant circuit Guide for Volkswagen Touran 4 Door Second Generation (2015-2022)

Arteon 2018 ➤ , Atlas 2017 ➤ , CC 2012 ➤ , Caddy 2016 ➤ , Crafter 201 ...

Air conditioning systems with refrigerant R1234yf - General information - Edition 07.2017

Note

If for instance 50 cm³refrigerant oil was poured out of the de‐

♦

fective air conditioner compressor, and 100 cm³oil was pour‐

ed out of the replacement air conditioner compressor (a small

quantity of refrigerant oil remains in the air conditioner com‐

pressor), pour 50 cm³refrigerant oil into the replacement air

conditioner compressor (the refrigerant oil previously poured

from the air conditioner compressor spare part may be used).

♦ Different refrigerant oils and volumes for different air condi‐

tioner compressors ⇒ Heating, air conditioning; Rep. gr. 00 ;

Technical data .

♦ If quite a large amount of refrigerant oil was poured out of the

defective air conditioner compressor (more than approx. 50

cm ³), the remaining refrigerant oil can also be poured in the

evaporator or reservoir/receiver/inner heat exchanger ⇒ Heat‐

ing, air conditioning; Rep. gr. 87 ; Refrigerant circuit; System

overview - refrigerant circuit .

All

– Renew restrictor (only if installed in this refrigerant circuit).

– Assemble the refrigerant circuit, evacuate and charge

⇒ page 129 .

1.5.5

Renewing air conditioner compressor

due to leaks or internal damage

♦ Observe the general information about renewing components

⇒ “1.5.1 General information about renewing components”,

page 79

Vehicles with high-voltage system (hybrid vehicles)

– Observe the risk category of the high-voltage system ⇒ Rep.

gr. 00 ; Risk category of the high-voltage system .

– Observe safety precautions when working on the high-voltage

system

⇒ “1.5 Safety measures for working on vehicles with high-volt‐

age system”, page 3 .

– Observe safety precautions when working in the vicinity of

high-voltage components

⇒ “1.6 Safety precautions when working in the vicinity of high-

voltage components”, page 4 .

All vehicles

Renew air conditioner compressor e.g. owing to noise from the

air conditioner compressor or lack of performance.

– Drain refrigerant circuit ⇒ page 129 .

– Remove air conditioner compressor ⇒ Heating, air condition‐

ing; Rep. gr. 87 ; Air conditioner compressor .

– Clean refrigerant circuit (flush with R1234yf refrigerant)

⇒ “1.6 Cleaning refrigerant circuit”, page 92 .

1. Refrigerant circuit

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Arteon 2018 ➤ , Atlas 2017 ➤ , CC 2012 ➤ , Caddy 2016 ➤ , Crafter 201 ...

Air conditioning systems with refrigerant R1234yf - General information - Edition 07.2017

Note

♦ In the event of internal damage (to the air conditioner com‐

pressor), check the refrigerant hoses and condenser. If con‐

taminated by swarf, for example, clean ^lt^khe refrigerant hoses

and condenser (flush with R1234yf refrigerant

⇒ “1.6 Cleaning refrigerant circuit”, page 92 ); renew refrig‐

erant hoses if necessary.

♦ On certain vehicles (e.g. vehicles with 2 evaporators), the vol‐

ume of refrigerant oil in the refrigerant circuit may be greater

than the volume in the replacement air conditioner compres‐

sor. Replenish the refrigerant circuit on these vehicles with the

amount of refrigerant oil necessary ⇒ Heating, air condition‐

ing; Rep. gr. 00 ; Technical data (vehicle-specific workshop

manual).

♦ In the event of a fault in the electronics of an electrical air con‐

ditioning compressor (e.g. control unit for air conditioning com‐

pressor - J842- defective), the refrigerant circuit need not be

flushed. In this case, the air conditioner compressor is to be

renewed without there being a requirement to clean the re‐

frigerant circuit

⇒ “1.5.4 Renewing air conditioner compressor with no need to

clean refrigerant circuit”, page 85

– Renew desiccant bag/desiccant cartridge (reservoir/receiver)

⇒ Heating, air conditioning; Rep. gr. 87 ; Refrigerant circuit;

System overview - refrigerant circuit .

– Check expansion valve for contamination or corrosion, renew

if necessary ⇒ Heating, air conditioning; Rep. gr. 87 ; Refrig‐

erant circuit; System overview - refrigerant circuit .

– Assemble the refrigerant circuit, evacuate and charge

⇒ page 129 .

1.5.6

Renewing desiccant cartridge / receiver

after cleaning refrigerant circuit

Note

Installed in the receiver is usually a desiccant cartridge or desic‐

cant bag (depending on the layout of the refrigerant circuit) ⇒

Heating, air conditioning; Rep. gr. 87 ; Refrigerant circuit; System

overview - refrigerant circuit

♦ Observe the general information about renewing components

⇒ “1.5.1 General information about renewing components”,

page 79

Note

Clean the refrigerant circuit. In other words, flush with R1234yf

refrigerant ⇒ “1.6 Cleaning refrigerant circuit”, page 92 .

For example due to moisture ingress (the refrigerant circuit was

open for too long) or contamination

– Drain refrigerant circuit ⇒ page 129 .

– Remove air conditioner compressor ⇒ Heating, air condition‐

ing; Rep. gr. 87 ; Air conditioner compressor .

Rep. gr.87 - Air conditioning system

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Air conditioning system -> 1.5.8 Renewing desiccant cartridge / desiccant bag with no need to clean refrigerant circuit for Your Volkswagen Touran 4 Door Second Generation (2015-2022)

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