Custom Auto Wiring & Electrical HP1545 by Matt Strong

Author:Matt Strong
Language: eng
Format: epub
Publisher: Penguin Random House LLC
Published: 2010-02-28T16:00:00+00:00

On this vehicle, the A/C system turns on by moving the switch to any of three positions. This tells the system how much cold the driver wants, and where to send it. Green/blue is cold and red is hot regarding the temperature control knob. It also should engage the compressor clutch in all three positions. The fan switch just starts the fan blowing at the speed the driver selects. It is the same fan as used when the heater is turned on.

Accumulator—Accumulators are used on systems that use an orifice tube to meter refrigerants into the evaporator. It is connected directly to the evaporator outlet and stores excess liquid refrigerant. Introduction of liquid refrigerant into a compressor can do serious damage. Compressors are designed to compress gas, not liquid. The chief role of the accumulator is to isolate the compressor from any damaging liquid refrigerant. Accumulators, like receiver/dryers, also remove debris and moisture from the system. It is a good idea to replace the accumulator each time the system is opened up for major repair and anytime moisture and/or debris is of concern. Moisture is enemy number one for your A/C system. Moisture in a system mixes with refrigerant and forms a corrosive acid. When in doubt, it may be to your advantage to change the accumulator or receiver in your system. While this may be expensive, it will greatly extend the life of your air conditioning system.

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