Volkswagen Touran Service Manual: Refrigerant Circuit with Restrictor and Reservoir
Arrows point in direction of refrigerant flow. |
A-Low pressure side of refrigerant circuit. |
B-High pressure side of refrigerant circuit. |

Component |
Aggregate state of refrigerant |
Pressure bar (psi) positive pressure |
Temperature
in degrees Celsius (Fahrenheit) |
-1-
A/C compressor B-side |
Gas |
up to 20 (290 psi) |
up to 70 (158) |
-2-
Condenser |
From gas to vapor to
fluid |
up to 20 (290 psi) |
up to 70 (158) |
-3-
Restrictor |
From fluid to vapor |
B-side to 20 (290 psi),
A-side greater than 1.5 (21.8 psi) |
B-side up to 60 (140 psi),
A-side warmer than -4 (25) |
-4-
Evaporator |
From vapor to gas |
Greater than 1.5 (21.8
psi) |
Warmer than -4 (25) |
-5-
Reservoir |
Gas |
|
|
-6-
A/C compressor A-side |
Gas |
|
|
Pressures on A-side are maintained at approximately 2 bar (29 psi)
by "regulating" A/C compressor also at various engine speeds. However,
this applies only within the performance range of the A/C compressor; if
the performance limits of the A/C compressor are exceeded. Refer to
→ Chapter "Pressures, Checking". |

Note
In vehicles with A/C Compressor Regulator Valve -N280-, the pressure
is modified on the low pressure side by the valve. |
A-Low pressure side of refrigerant circuit.
B-High pressure side of refrigerant circuit.
Component
A ...
Indicators on pressure gauge
1 -
Temperature scale for refrigerant R134a CF3CH2F or
CH2FCF3.
2 -
...
Other materials:
Volkswagen Touran Owners Manual. Introduction
This chapter contains information on the following subjects:
→ Indicator lamps
→ Catalytic converter
→ Diesel particulate filter
Additional information and warnings:
Changing gear
Filling the tank
Fuel
Engine oil
...
Volkswagen Touran Service Manual. Wear Spots
Wear spots are caused by a hard stop with locked wheels
whereby the rubber compound is abraded from the contact patch.
When the tires slide across the road surface, frictional
heat is generated which reduces the abrasion resistance on the
...
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