Chery B11. Manual — part 125

Chery B11 Service Manual

Air Conditioner-23

(737mmHg), and then vacuumize 15 min again so as to remove the air entering into the

system together with the oils. In this case, the refrigeration oils are in the high-pressure side,

and the oils will return back to the compressor after the operation of the system.

Refrigeration oil charge

Specified quantity: SP10 model, 150ml. It is unnecessary to charge the refrigeration oil into the

newly-mounted A/C system, and it is required to complement some refrigeration oils only when a

certain part is needed to repair or when the vehicle is driven a specified mileage. The quantity of

implementing oil required when replacing parts is as follows:

Evaporator and condenser: 30ml. Drier: 20ml. and pipe: 10ml.

Chery B11 Service Manual

Air Conditioner-24

Section 14 Leak Check of Refrigeration System

Three effective methods can be used to check the air tightness of refrigeration system: check with

electronic leak detector, soap solution and halogen leak detector.

(I)

Check with Electronic Leak Detector

As shown in the figure, connect the power supply connector 2 of electronic leak detector 1 to the

power supply, and move probe 3 slowly (30 mm/s), which should be placed 3 mm away from the

check point. And if any alarming sound is emitted, it means there is a leak phenomenon occurred

at that place. If the leakage occurs at the joints of refrigeration pipes, the relevant O-rings shall be

replaced.

(II) Check with Soap Solution

Apply the soap solution to the possible leak

position.

Observe whether air bubbles appear. If there are air

bubbles, it indicates a leaking accident occurs.

Check with Electronic Leak Detector.

(III) Check with Halogen Leak Detector

As shown in the right figure, the halogen leak

detector is in principle a propane blowtorch.

The inspection procedure is described below:

(1) Check the liquid propane capacity in the

reservoir.

(2) Tighten the propane reservoir 16 to the leak

detector.

(3) Insert a lighting match into lighting device 9,

and then slowly turn the adjusting handle 14 in

the counterclockwise direction till the torch is

lit.

1-Electronic leak detector. 2-Power supply connector.

3-Probe

Check with Halogen Leak Detector

1-Upper limit of flame. 2-Lower limit of flame. 3-Suck
pipe. 4-Rough filter. 5-Cover. 6-Combustion chamber.
7-Flame ring. 8-Screw for flame ring. 9-Lighting device.
10-Spraying hole. 11-Base. 12-Nozzle. 13-Valve body.
14-Adjusting handle. 15-Reservior nozzle. 16-Propane
reservoir

Chery B11 Service Manual

Air Conditioner-25

(4)

Adjust the flame to smallest. The smaller the flame, the more sensitive to the leak of

refrigerant.

(5) Move suck pipe 3 to the possible leak position.

(6)

Observe the change of flame color. The flame has no color if there is no leakage. The flame

is tint green if there is very small leakage or be blue if there is relatively big leakage, and it

will become purple if there is too much leakage.

Chery B11 Service Manual

Air Conditioner-26

Section 15 Driven Belt Check

Check the driven belt tension

1

Check the installation of the driven belt

Check whether the belt is correctly engaged with its

pulley, shown in the figure.

2

Check the tension of the belt

Tension of driven belt under 98N (10kg/22.0P)

Check value: 7.0 to 9.5 mm

Adjusting value:

New belt: 6.0~7.0mm

Old belt: 8.0~9.0mm

● “New belt” means a belt that is used less than 5

min on the engine operating.

● “Old belt” means a belt that is used no less than 5

min on the engine operating.

● After the installation of driven belt, check if it is

installed correctly as described above.

Right

Wrong