Chery S11 / Chery QQ. Manual - part 74

   Chery QQ Service Manual 

Secion 5    Operating Method of the Recovery Device for Refrigerant   

I. Recovery refrigerant from the refrigerating device 

When refrigerant is discharged from the refrigerating device at following cases, a recovery device 
should be used to recovery refrigerant: 
 
Before changing parts on refrigerant pipe. 
 
When water vapor or air enter refrigerant pipe.

 

 
When refrigerant is overcharged. 

 

 

Note:  

（

1 ） when using recovery device, you must follow the requirement in the 

specification. 

（

2）after recovery is finished, the discharged oil from compressor must be measured 

in order to charge the same amount of oil to refrigerating device later. 

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   Chery QQ Service Manual 

 

 

II. Operating method for recovery device 

1.  The manifold pressure meter set is installed on the spare valve. 

2. 

Refrigerant is recovered from the refrigerating device.

 

(1) The middle hose is connected to recovery device. 

(2) To operate recovery device. 

(3)  To open the manual high pressure and low pressure valves on the manifole pressure meter set. 

3.  Stop 

recovery device after recovery is finished. 

4. The manifold pressure meter set is disassembled from the spare valve. 

 
 

 

Section 6  Installation of

 

Air-conditioning System 

 

I. Preparation before installation 

The following items should be checked and adjusted before installation: 

（

1）engine ignition timing 

（

2）engine cooling system 

（

3）accumulator electrolyte and charging system 

（

4）carriage seal 

（

5）fuel system 

（

6）general conditions of vehicle 

 

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   Chery QQ Service Manual 

II. Preparation for parts of air conditioner 

Parts should be put according to the installation order after the package box for parts 

is open. At the same time, you must make sure that no part is missed or bad. When 

installing air conditioner, you must protect the fenders and seats with supplementary 

mats. 

   

Cautions during installation： 

（

1）the negative

 

lead of the accumulator should be removed. 

（

2）the air conditioner parts are fixed on engine with the supplied bolts according to 

required torque. 

（

3）when pipes and wire bundle for air conditioner are installed，

pipe and wire 

arrangement

 should be right in order to avoid to be interferred with surrounding parts. 

（

4）when pipes and hoses are connected, 2-3 drops of refrigerant should be dropped 

on the pipe socket nut. 

（

5）two wrenches should be used when pipe joints are fixed or unscrewed to make 

the pipe line be supported during fixing or unscrewing. 

（

6）the pipe socket nut should be fixed according to the required torque. 

（

7）plugs at connected places should not be removed before all parts are not installed 

properly. 

Note: The compressor is charged with a small amount of refrigerant before delivering 

to avoid the seal corruption. So it is necessory to remove the plug of the compressor 

carefully to let the refrigerant flow slowly. 

（

8）when using HFC-134a（R-134a）refrigerant, you must take the safety goggles and 

work carefully to avoid it to splash to your skin. 

（

9）HFC-134a（R-134a）can be put in hot water and keep it about 40℃(100℉). 

（

10）The air conditioning system should be installed according to the specification 

delivered with the spares. 

 

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   Chery QQ Service Manual 

Section 7 Recovery, Evacuation and Charge 

 

I. Recovery of refrigerant 

Refrigerant recovery unit must be used when the refrigerant for air conditioning is 

discharged. Directly discharging refrigerant into atmosphere will bring harmful effects 

on environment. 

Note: when using recovery unit, you must follow the operating instruction of the 

device. 

II. Evacuation 

（

1）air conditioning system must be evacuated with the vacuum pump whenever its 

joints are disconnected (exposed to air ). The air conditioning system should be 

connected to manifold pressure meter and it will take about 15 mins to evacuate air. 

Note: Do not evacuate air conditioning before refrigerant is recovered. 

 

（

2）connect the high/low pressure charge hoses for manifold pressure meter 

respectively as described in the following. 

High pressure charge hose—discharging hose of the compressor   

Low pressure charge hose—intaking hose of the compressor 

（

3）center charge hose of the manifole pressure meter is connected to vacuum pump. 

（

4）start the vacuum pump, then switch on the manual valve at the intaking side of 

manifold pressure meter（Lo）. 

If the system is not blocked, there is indication on high-pressure meter. 

When the indicator lights, switch on the manual valve at the other side（Hi）. 

（

5）if there is no leakage for about 10 mins, the low-pressure meter will indicate the 

vacuum pressure is lower than 760mmHg. 

Note:  

If vacuum is higher than 760mmHg, the manual valves should be turned off, the 

vacuum pump is stopped and the pointer swaying of low-pressure meter should be 

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