VOLKSWAGEN GOLF IV
since 1997 of release
Repair and car operation
Foltsvagen Golf 4
+ 1. Maintenance instruction
+ 2. Engine
+ 3. Cooling system
+ 4. Fuel system
+ 5. Exhaust system
- 6. Ventilation and heating system
6.1. Removal and installation snuffled supply of air
6.2. Installation of the lever of the central zaslonka
6.3. Removal and installation of the fan of a heater and additional resistor
6.4. Removal and installation of cables of management by heating and ventilation system
+ 6.5. Zaslonka regulating temperature of air submitted to salon
6.6. Removal and control unit installation by a heater
6.7. Ventilation of salon of the car
6.8. Executive engine of the valve of a retsirkulyatsiya of air
6.9. Air central air
6.10. Arms of the compressor of the conditioner
+ 7. Coupling
+ 8. Transmission
+ 9. Suspension brackets and power shafts
+ 10. Steering
+ 11. Wheels and tires
+ 12. Brake system
+ 13. Body
+ 14. Electric equipment and electroschemes
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Scheme of central air of air
Central air deletes excessive heat and moisture from salon according to the basic physical principles. The coolant circulating in the form of liquid in that part of system where the high pressure is supported, evaporates and turns into gas on a site of low pressure. At expansion of gas there is a cooling, being accompanied heat selection from the air submitted by the fan to passenger salon and fall of its temperature. Further in process of passing via the condenser the coolant gives absorbed heat to air. The cycle of selection of heat proceeds infinitely long in process of coolant circulation on the closed contour. From the air submitted to salon, there is a moisture removal owing to condensation on the evaporator of the refrigerating chamber.
Central air of air represents potential danger. At its service observance of certain rules is required. Performance of the majority of operations on repair and service of central air needs the special equipment and certain skills of work.
Ventilation of a body is provided with a way of formation of a through stream of air. Fresh air gets in the car through an air inlet located before a windscreen. The stream of air comes to light via the final channels located on each side of a body about back shock-absorbers.
The size of a stream of air is regulated by the four-high-speed fan.
The system of heating of air of the mixed type is intended for fast response to change of air temperature in salon and reduction of a pulsation of temperature of warmed-up air. Cooling liquid of system of cooling of the engine constantly circulates in a radiator of a heater and the stream of cooling liquid is not regulated. An adjustable factor is air temperature which changes the mixing zaslonka defining amount of air, a heater passing through a radiator before its hit in car salon.
For a hit exception in salon of the car of fresh air there is a mode of a retsirkulyatsiya of air.
Precautionary measures at service of central air of air
Central air refuels a coolant "R12 Freon", and details of system are under working pressure over 300 atmospheres. A source of the increased danger at improper maintenance of system by unprepared technicians and when using the inadequate equipment is the high pressure and chemical influence of a coolant.
The automobile coolant "R12 Freon" possesses dangerous impact on environment. For protection of environment the Volkswagen firm orders to use at central air depressurization the equipment on utilization and the processing, supplied with the certificate of insurance laboratory (UL).