Get Air conditioning system -> 1.2.8 Liquid receiver 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

♦ The reservoir collects the vaporised and gaseous mixture

coming from the evaporator to ensure the air conditioner com‐

pressor receives only gaseous refrigerant. The vapour be‐

comes gaseous refrigerant.

♦ Refrigerant oil flowing in the circuit does not remain in the res‐

ervoir because an oil extraction hole has been provided.

♦ Any moisture ingress into the refrigerant circuit during assem‐

bly is trapped by a filter (desiccant bag) in the reservoir.

♦ Gaseous refrigerant with oil is drawn in by the air conditioner

compressor.

Note

♦ Renew the reservoir if the refrigerant circuit has been open for

an extended period of time and moisture has entered or if re‐

quired to do so owing to a specific complaint ⇒ page 79 .

♦ Do not remove sealing plugs -A- and -B- until just before in‐

stallation.

♦ A dryer kept in an unsealed reservoir is saturated with mois‐

ture after a short time and cannot be used.

♦ When installing, observe arrow indicating direction of flow if

applicable.

1.2.7

Heat exchanger for heat pump mode

The gaseous or vaporous refrigerant compressed by the air con‐

ditioning compressor is liquefied in the heat exchanger -A-. The

heat that is given off in the process is picked-up by the coolant

flowing through the system ⇒ Heating, air conditioning; Rep. gr.

87 ; Refrigerant circuit; System overview - refrigerant circuit .

1.2.8

Liquid receiver

In certain operating conditions (e.g. in heat pump mode), the re‐

ceiver (e.g. on the condenser) is not integrated in the refrigerant

circuit. The receiver -B- collects the refrigerant, temporarily stores

any excess should a certain amount of refrigerant not be required

and then feeds it in a steady flow to the expansion valve (in front

of the evaporator in the heater and air conditioning unit) or to the

heat exchanger in the coolant circuit of the high voltage system

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

tem overview - refrigerant circuit .

1. Refrigerant circuit

GETth

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

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

1.2.9

Restrictor

Restrictor in front of evaporator

Note

Currently, there is no air conditioning system with a restrictor in‐

stalled in front of the evaporator.

♦ The restrictor creates a constriction. This restriction limits the

flow, separating the high pressure and low pressure sides in

the refrigerant circuit. Upstream of the restrictor, the refriger‐

ant is warm due to the high pressure. Downstream of the

restrictor, the refrigerant is cold due to the low pressure. Up‐

stream of the constriction is a strainer to catch dirt and down‐

stream of the constriction is a strainer to atomise the

refrigerant before it enters the evaporator.

Note

♦ Arrow -A- on the restrictor points to the evaporator.

♦ Renew every time the refrigerant circuit is opened.

♦ Note different versions; refer to the various customer service

information ⇒ Electronic parts catalogue .

Restrictor in front of heat exchanger for high-voltage battery (chill‐

er)

The restrictor creates a constriction. This restriction limits the flow,

separating the high pressure and low pressure sides in the re‐

frigerant circuit. Upstream of the restrictor, the refrigerant is warm

due to the high pressure. Downstream of the restrictor, the refrig‐

erant is cold due to the low pressure.

Note

♦ The illustration shows a refrigerant line -A- with a permanently

installed restrictor -B- (without strainer).

♦ The diameter of the shown restrictor hole -B- is

approx. 0.7 mm. Depending on the refrigerant line version, this

restrictor is permanently installed or it can be removed. For the

removable version a strainer may be fitted to prevent the re‐

strictor hole from being blocked by suspended particles.

♦ Check for soiling before installing and clean or renew as nec‐

essary.

♦ Observe different versions.

Rep. gr.87 - Air conditioning system

GETth

Air conditioning system -> 1.2.8 Liquid receiver for Your Volkswagen Touran 4 Door Second Generation (2015-2022)

Related Topics

Air conditioning system

Popular Owner Manuals

Latest Owner Manuals