Great Wall hover, Руководство по обслуживанию

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CD Player and Air Conditioning System-15
Turn on the high-pressure valve on the manifold pressure gauge and inject the refrigerant to the system from high-pressure pipeline.
At this time, the attention shall be given to the readings of high-pressure meter and low-pressure meter, and make sure that these two
pressure all go up. If the refrigerant is being injected while the pressure does not go up, then the joints of the pipeline may be loosened
or the seals damaged, inject the refrigerant once more after finding out the cause and the fixing. When the increase of pressure stops,
turn off the high-pressure valve of the manifold pressure gauge and then start the engine
.
Operate the switch in a way as follows:
Turn the switch of air conditioner to “ON”
Regulate the temperature controller to the coolest position,
Enable the air conveying to the maximum,
Select the internal air circulation between the internal/external air circulation,
During this process, the door and windows will be all opened.
Adjust the engine’s speed to the specified free running speed.
Erect the refrigerant reservoir or gas bottle (have the refrigerant injected into the refrigerating system in a gas state), turn on the
low-pressure valve of the manifold pressure gauge.
When the compressor is at work, please do not turn on the high-pressure valve.
Before checking the refrigeration level, please confirm the injection volume of the refrigerant specified for air conditioning system.
When injecting the refrigerant, carefully observe the high-pressure side of the manifold pressure gauge and the flow condition of
the refrigerant (clear, foaming or turbid), all these could be viewed through the inspection window, by which the moment of stop
injecting the refrigerant can be reasonably judged(turning off the low-pressure valve).
air washing
off
off
tip screw driver
red
yellow
blue
refrigerant reservoir
high-pressure
low-pressure
off
low-pressure pipe
high-pressure pipe
refrigerant reservoir
yellow
red
blue
on