Notes for Maintenance of Air Conditioning System
1.When handling refrigerant the following precautions must be observed
Do not handle refrigerant in an enclosed area or near an open flame.
Always Read more Automotive Air Condition System Inspection/Test
1.Function
In idle state such as in slow traffic or during stop, the engine output is small.
In this state, driving the compressor applies overload to the engine, which results in overheating or engine Read more Automotive Air Condition System Idle-up Control
1.Function
The dual A/C and the refrigeration cycle with rear cooler have evaporators and expansion valves for front and rear. These make the refrigerant circulate using a compressor.
To control two Read more Automotive Air Condition System Dual A/C (Rear Cooler) Control
1.Function
A pressure switch is installed on the high-pressure side of the refrigeration cycle. When the switch detects abnormal pressure in the refrigeration cycle, it stops the compressor to prevent Read more Automotive Air Condition System Pressure Switch Control
Outline
1.Description
To operate the A/C normally or to reduce the damage to the components when a malfunction occurs, the signals from each sensor or switch are sent to the A/C amplifier in order Read more Automotive Air Condition System Control
1.Function
When the evaporator becomes frosted, no air passes between the fins. In this condition, the heat exchange rate reduces, which results in insufficient cooling capability. The refrigerant does Read more Automotive Air Condition System EPR (Evaporator Pressure Regulator)
1.Function
An expansion valve injects the high-temperature and high-pressure liquid refrigerant, which has passed through the receiver, from the small hole to cause the refrigerant to expand suddenly Read more Automotive Air Condition System Expansion Valve (Box Type)
1.Description
In recent vehicles, a sub-cool type condenser is used to improve the cooling capability.
2.Operation
In the refrigeration cycle of the sub-cool condenser, a modulator functions as a receiver/dryer Read more Automotive Air Condition System Sub-Cool Type Condenser
1.Receiver/dryer
A receiver is a device to store the refrigerant liquidized by the condenser temporarily, and it supplies the required amount of refrigerant to the evaporator.
A dryer has a desiccant Read more Automotive Air Condition System Receiver Dryer and Sight-Glass
1.Function
A magnetic clutch is driven by engine through the drive belt. The magnetic clutch is a device to connect the engine and the compressor. The magnetic clutch stops and drives the compressor as Read more Automotive Air Condition System Magnetic Clutch