Great Wall Florid, Service Manual

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207 Air Conditioning System
Air Conditioning System's Structure Diagram and Fundamentals
Air Conditioning System Overview
Basic composition
Composed of air conditioner, compressor assembly, condenser
assembly, pipeline, defroster system, heating & ventilation
system, etc. The air conditioner also includes evaporator and
blower components.
Function
This system is a manually controlled air conditioning
system, with steam compression as its cooling method.
Residual heat water warming is the heating method the
engine adopts. Inner & outer circulation, blowing mode,
and cold & warm temperature adjustment are all controlled
by individual cables from the air conditioning controller. It
achieves ventilation, warming, and cooling integration.
Caution: While starting the compressor, you must open
the air regulation knob first, otherwise it cannot start.
Operation
The compressor is driven directly by the engine. High
temperature and high pressure refrigerant vapor exhausted
from the compressor will pass through the high pressure
pipe into the condenser, dissipate the heat via temperature
difference, and then form a high pressure liquid. High
pressure liquid passes through the accumulating dehydrator
into the expansion valve, and after passing through the
throttle valve, it becomes a low pressure liquid. Heat
exchange via the evaporator will cool down the room’s air,
and then the refrigerant inside the system will become a low
temperature and low pressure vapor, which is then sucked
into the compressor and compressed into high temperature
and high pressure air again. Thus a cooling cycle is formed.
The circulation continues, which maintains a comfortable
temperature inside the vehicle.
Expansion valve
Compressor
Condenser fan
Condenser
Pipeline
Air conditioner
Accumulating
dehydrator