Geely EC715 2009, Workshop Manual

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Inside and Outside
Circulation Valve Leakage
1. Switch to outside circulation.
2. Outside circulation closing valve
catching or not closed.
3. Inside and outside circulation motor
malfunction
4. Air-conditioning control module
malfunction
1. Switch to the inside circulation.
2. Adjust the outside circulation mechanism.
3. Replace the inside and outside circulation motor.
4. Replace the inside and outside circulation
mechanism.
5. Replace the air-conditioning control module.
8.2.7.10 Air-conditioning Refrigerant Recovery and Filling
Air-conditioning (A/C) system, operating efficiency and service life depend on the the cooling system chemical stability. When the
cooling system is contaminated by foreign matter (such as dust, air or moisture), the pollutants will change the refrigerant and
compressor oil 100 PG stability. and, also affect the relationship between pressure and temperature, reduce work efficiency, and
may lead to abnormal wear of internal components corrosion. Please ensure that the system chemical stability as following:
1. Before open joints, wipe the oil around the joints, reducing the possibility of oil entering into the system.
2. Disconnect the connector, immediately using a cap, plug, or tape to seal joints at both ends to prevent oil, foreign matter and
moisture entering.
3. Keep all the tools clean, dry, including the manifold pressure gage components, and all replacement parts.
4. With clean, dry delivery devices and containers to add 100 PG refrigerant oil, ensure the refrigerant oil is not affected by moisture.
5. During operation, minimize the time the air-conditioning system exposed to air.
6. Empty and fill the air-conditioning system after exposing to air. All repairs must be dried and sealed before leaving the factory.
Only open the sealed parts before the upcoming installation. All parts should be at room temperature to prevent moisture
condensation in the air entering into the system, and re-seal all the parts as soon as possible.
Bleed air-conditioning system, add lubricant, emptying and filling process
Warning!
Refer to "Breathing R-134a Warning" in "Warnings and Notices". Other relevant health and safety information can be
obtained from refrigerant and lubricant manufacturers.
Warning!
Refer to "Protective Goggles and Glove Warning" in "Warnings and Notices".
Filling air-conditioning systems, bleeding, emptying and re-filling process can be done within one connection. During the recovery
and evacuation, refrigerant must be filtered in order to ensure the air-conditioning system refrigerant clean and dry.
1. Do not use R-12 filling machine for filling R-134a system. The two systems refrigerant and refrigerant oil are not compatible and
must not mix, even a small amount is not allowed, mixed with residual refrigerant may damage the equipment.
2. Do not use different-diameter joints in order to ensure airtight within the system.
Filling Machine Installation and Maintenance
There are a lot filling machine types. All filling machines implement air-conditioning system bleeding, refrigerant recovery, system
evacuation, adding refrigerant oil and cooling agent filling tasks. Refer to the filling machine manual, grasp the initial setup and
maintenance procedures.
8-38 Automatic Air-conditioning Heating, Ventilation and A/C System
EC718/EC718RV EC715/EC715RV 10/2009