Technical data
Heater type - full-flow with separate regulation of two flows
Compressor - scroll type MSC90
Dual pressure sensor, kPa
- high pressure switch
- ON -> OFF 2 940
- OFF -> ON 2 350
- low pressure switch
- ON -> OFF 196
- OFF-> ON 221
refrigerant
- type - R-134a (HFC- 134a)
- weight, g - 660-700
Basic data for adjustments and monitoring
The frequency of rotation of the crankshaft idling, min-1
- engine 4G1 — 750+100
- - engine 4G9 — 700+100
Increased idle speed, min-1
- air conditioning off
- engine 4G1 —750+100
- engine 4G9 — 700+100
- air conditioning included
- engine 4G1 — 850+100
- engine 4G9 — 800+100
Electric fan resistor resistance, Ohm
- LO — 2,30
- ML — 1,10
- MN - 0.40
Axial clearance of the electromagnetic clutch of the air conditioner compressor, mm - 0.4-0.65
Lubricant
Each time the air conditioning circuit is disconnected - SUN PAG 56 (on demand)
Air conditioning compressor - SUN PAG 56 (120 g)
General information
The car has an air conditioning system (forced ventilation and heating) with separate regulation of air flow to the head and foot area of the driver and passenger and bypassing the air conditioner evaporator, which is characterized by high efficiency and low noise.
The air conditioning system, in general, is similar to the standard one, however, it uses a new refrigerant, adopted in connection with the introduction of international restrictions on the use of freons. The system also includes an air filter.
Security measures
Because R-134a refrigerant is a fluorocarbon (HFC in which chlorine atoms are replaced by hydrogen atoms), then it does not have a harmful effect on the ozone layer of the atmosphere.
R-134a refrigerant is a clear, colorless substance in both liquid and gaseous phases. Since the boiling point of the refrigerant at atmospheric pressure is -29.8°C, then under normal conditions of temperature and pressure, it is in a gaseous state.
This gas is heavier than air and is not flammable or explosive.
At normal temperature and atmospheric pressure, the rate of evaporation of R-134a liquid refrigerant is so high that any object that comes into contact with it freezes. Therefore, special care must be taken when handling liquid refrigerant to avoid contact with the skin and especially the eyes. Always wear safety goggles when servicing the air conditioner cooling system. Also keep a bottle of clean, sterile mineral oil handy. If liquid refrigerant gets into your eyes, rinse immediately with a few drops of mineral oil. The oil quickly absorbs the R-134a refrigerant.
Then rinse your eyes with plenty of cold water. Even if after these procedures the irritation has stopped, seek medical help immediately.
When charging the system with refrigerant, in most cases moderate heating of the refrigerant cylinder is required to create an increased pressure in the cylinder compared to the pressure in the air conditioning system.
For this purpose, a bucket or tank is usually used, filled with warm water with a temperature not exceeding +40°C. Do not use a blowtorch, torch, etc. to heat the refrigerant cylinder, as the pressure and temperature of the refrigerant may then exceed the above limit temperature. Do not weld or hot-steam clean parts in close proximity to air conditioning components and hoses.