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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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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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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