Audi 80/90/Coupe

since 1986-1991 of release

Repair and car operation



Audi 80/90/Coupe
+ 1.2. Car identification
+ 2. Engines, carburetors
3. Greasing system
+ 4. Cooling system
+ 5. Fuel system
+ 6. Exhaust system
+ 7. Ignition system
+ 8. Transmission
+ 9. Suspension brackets, wheels
+ 10. Brake system
+ 11. Steering
+ 12. Body, salon
- 13. Central air
   13.2. Pressure switches
   13.3. Valve of descent of water
   13.4. Wedge-shaped belt of the compressor of the conditioner
   13.5. Check of vacuum system
   13.6. Places of connections of lines of a coolant, throttle
   13.7. Conditioner compressor
   13.8. Coupling of the compressor of the conditioner
+ 14. Electric equipment







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13. Central air

13.1. Conditioner

GENERAL INFORMATION

System of cooling of the conditioner

And – area of low pressure
In – area of a high pressure
1. Throttle
ring consolidation: internal diameter of 9.3 mm
thickness of 1.8 mm
inhaling moment: 10.0 N of m.
3. Valve of a high pressure
4. Switch of a high pressure of a coolant
color of the case: yellow or green
working pressure:
it is closed: 13.1–17.5 bar
opens: 10.6–15.0 bar
ring consolidation: internal diameter of 9.3 mm
thickness of 1.8 mm
inhaling moment: 10.0 N of m.
5. Switch of a high pressure of the conditioner (5 cylinder engine)
red case
opens: 28.2 bar-31.0 bar
it is closed: 10.3 bar-17.3 bar
ring consolidation: internal diameter of 9.3 mm
thickness of 1.8 mm
inhaling moment: 10.0 N of m.
6. The serving valve of a high pressure (the 5-cylinder engine)
treats the switch of a high pressure of the conditioner
it is used for descent and a charging of system of cooling of the conditioner
7. Condenser
ring consolidation on an entrance: internal diameter of 14.0 mm
thickness of 1.8 mm
ring consolidation on an exit: internal diameter of 7.5 mm
thickness of 1.8 mm
the inhaling moment on an entrance: 26.5 N of m.
the inhaling moment on an exit: 16.5 N of m.
8. Switch of a high pressure of the conditioner (the 4-cylinder engine)
9. The serving valve of a high pressure (the 4-cylinder engine)
treats the switch of a high pressure of the conditioner
it is used for descent and a charging of system of cooling of the conditioner
10. Conditioner compressor
ring consolidation of connection with the line of low pressure: internal diameter of 17.2 mm
thickness of 1.8 mm
ring consolidation of connection with the line of a high pressure: internal diameter of 14.0 mm
thickness of 1.8 mm
moment of an inhaling of connection with the line of low pressure: 42 N of m.
moment of an inhaling of connection with the line of a high pressure: 26.5 N of m.
11. Coupling of the compressor of the conditioner
12. The serving valve of low pressure
it is used for descent and a charging of system of cooling
13. Cap
14. Store
ring consolidation on an entrance: internal diameter of 17.2 mm
thickness of 1.8 mm
on an exit: internal diameter of 17.2 mm
thickness of 1.8 mm
the inhaling moment on an entrance: 42.0 N of m.
on an exit: 42.0 N of m.
15. Switch of low pressure of a coolant of the conditioner
working pressure:
it is closed: 1.45–1.6 bar
opens: 2.9–3.2 bar
ring consolidation: internal diameter of 9.3 mm
thickness of 1.8 mm
inhaling moment: 5.5 N of m.
16. Valve of low pressure
17. Evaporator
ring consolidation on an entrance: internal diameter of 10.8 mm
thickness of 1.8 mm
on an exit: internal diameter of 17.2 mm
thickness of 1.8 mm
inhaling moment: 16 N of m.

Prevention

When you remove the condenser in cars equipped 5цилиндровым the engine, first of all, unscrew the line of a coolant conducting from the evaporator to the condenser.


Elements of management of the conditioner

1. Hatch of supply of fresh air and
air retsirkulyatsiya
2. External temperature sensor
3. Vacuum amplifier
it is intended for supply of fresh air in the hatch and for an air retsirkulyatsiya
4. Dashboard air inlet
5. Bilateral valve
it is intended for supply of fresh air in the hatch and for an air retsirkulyatsiya
6. Delivery fan of fresh air
7. Panel of the central air inlet and control system
8. Switch of supply of fresh air and retsirkulyatsiya mode
9. Switch of the air conditioner
10. Control unit conditioner
11. Ropes
connection on the control unit
connections with folding zaslonka
12. Openings for heating of feet
13. Consecutive resistance of the delivery fan

Prevention

The devices described here, are located in a compartment of the engine and supplement elements of central air of air.

For replacement of the faulty vacuum block it is necessary to remove a heater, first of all.


Scheme of an arrangement of components

1. External temperature sensor
removal and installation:
uncover the ventilating hatch and a ware box
2. Hatch of supply of fresh air
3. The temperature sensor (on a cover)
4. The vacuum block of an operating zaslonka (having blown in feet and glasses)
Vacuum hoses
5. Connecting nest
for vacuum hoses and epektrichesky contacts of a heater
6. An opening for обдува feet
7. Vacuum block
ensures functioning of the central air zaslonka (a zaslonka regulating intake of air in openings for обдува feet and glasses)

8. Adjusting engine
regulates the provision of a zaslonka of control of temperature (by means of a feedback potentiometer)
feedback potentiometer
9. Vacuum block
ensures functioning of an air zaslonka retsirkulirouyemogo/fresh air
10. The engine of the fan forcing fresh air
11. Heater
together with the evaporator
12. Control unit
regulates operation of the delivery fan
13. Switch of low pressure
it is intended for ensuring functioning of system of cooling