Geely CK Series 2007 Workshop Manual page 321

Have a focus inspection on the following area:
a. Each pipe union joint and valve connection.
b. All hose, especially near the pipe union.
c. Compressor shaft seal, front and rear cover, gasket, oil fill plug.
d. Area on the surface of the condenser and evaporator that is scratched, bruised or damaged.
e. Expansion valve inlet and outlet connection and temperature sensor element and the welding position.
3. Check the Refrigerant
Observing from the sight glass, you may understand the refrigerant status and analyze the possible faults:
Conditions observed
Clear, no air bubble, A/C emits cool wind
Clear, no air bubble, A/C emits warm wind
Occational air bubble. Expansion valve is frosted
Occational air bubble.
Clear, there is oil stripe on the glass
Foamy and turbid
4. Check Other Parts
Other parts needed to be checked and their check points:
Checked Part
Evaporator Condenser
Electromagnetic Clutch
Compressor Belt
Wire
Hose
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There shall be no dirt and rust on the radiator that hinder the heat
exchange;
The radiator surface has no damage, fissure and hidden trouble that may
cause refrigerant leakage.
Clutch operation is normal. When switched on, the compressor shall
operate, clutch can not slip.
Belt tension of 250N is normal, belt is not broken and damaged.
The electromagnetic clutch and blower power cable shall be not damaged
and overheated; the connection shall be reliable, and the protective
grommet through the metal plate shall be kept good and without damage.
Refrigerant hose and condenser pipe shall be secured and shall not be
damaged by approaching the other overheated parts, moving parts and
sharp parts.
Possible problems
Refrigeration system is normal
Refrigerant leaked, there is leakage in the system
There is water mixed in the refrigeration system
Insufficient refrigerant or air mixed in the system
Outlet is not cold, no refrigerant
Excessive freezing oil
Check Points