Hyundai Accent

Repair and car operation

Hyundai Accent
+ 1. Maintenance instruction
+ 2. Engine
+ 3. Greasing system
+ 4. Cooling system
+ 5. Control, decrease in toxicity
+ 6. Fuel system
+ 7. Ignition system
+ 8. Coupling
+ 9. Transmission
+ 10. Axes and power shafts
+ 11. Suspension bracket
+ 12. Steering
+ 13. Brake system
+ 14. Body
- 15. Central air
   15.1. Specifications
   15.2. Instruction on coolant application
   15.3. Remarks at replacement of elements of central air of air
   15.4. Connection of elements of central air of air
   15.5. Check of elements of central air established on the car
   15.6. Installation of manometers for pressure measurement
   15.7. Pumping of atmospheric air from central air
   15.8. Charging of central air of air
   15.9. Check of level of a coolant
   15.10. Verification of operational characteristics
   15.11. Oil for greasing of the compressor of the conditioner
   15.12. Relay check
   15.13. Conditioner compressor
   15.14. Plug of coupling and pulley of the compressor of the conditioner
   15.15. Coil of initiation of coupling
   15.16. Compressor check on the car
   15.17. Sensor of threefold (double) pressure
   15.18. Fan and condenser
   15.19. Evaporator
   15.20. Check of the thermostatic sensor (termistor)
   15.21. Air filter of the evaporator
   15.22. Heating and ventilation block
   15.23. Heater block
   15.24. Fan
   15.25. Search and elimination of malfunctions
+ 16. Electric equipment
+ 17. Appendix
+ 18. Electroschemes

15.17. Sensor of threefold (double) pressure

The sensor of threefold (double) pressure represents the combined switch of low pressure (to check quantity of a coolant), average pressure (for turning on of the fan of the condenser) and a high pressure (for overheat prevention).

The sensor is established in an exhaust pipe and when pressure becomes approximately equal 200 kPas or less, the condenser fan, thus excepting a compressor overheat is switched off. When pressure reaches 1400 kPas, the condenser fan is switched off, consumption of energy by it thus is prevented. When pressure reaches 3214 kPas, the compressor is switched off.


1. Discharge air central air.
2. Disconnect the socket from the threefold (double) sensor of pressure.
3. Turn out the threefold (double) sensor of pressure.


1. Installation is carried out to sequences, return to removal.
2. Pump out, charge and check air central air.