Chery A15. Manual - part 132

 

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. 

(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.

 

 

5. Methods of Refrigerant Oil Charging 
There are two methods for refrigerant oil 
charging: direct charging method and vacuum 
inhaling method. 

 

1）Direct charging 
Remove the oil charging plug 1, and charge 
the specified model of refrigerant oil. 

 

2）Vacuum inhaling 
Vacuumize the refrigeration system to 30psi, 
and then start to charge the refrigerant oil, the 
procedures of which are as follows: 

(1) Turn off the high-pressure manual valve, 

and turn off the auxiliary valve. 

(2) Remove the high-pressure side hose from 

the manifold pressure gauge, and insert 
the hose into the oil cup. 

(3) Turn off the auxiliary valve to inhale the 

refrigerant oil into the refrigeration system 
from the oil cup. 

(4) When the refrigeration oils in the cup are 

nearly evacuated, immediately turn off the 

 

Vacuumizing and Charging the Refrigeration Oil

Oil cup 

High-pressure pipe 

High-pressure manual valve

Low-pressure side hose

Air return 

Air exhaust 

auxiliary valve

High-pressure side hose 

Low-pressure manual valve

High-pressure gauge 

Low-pressure gauge

Vacuum pump

 

 

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auxiliary valve so as to prevent the air 
from being inhaled into the system. 

(5) Connect the high-pressure side hose joint 

to the manifold pressure gauge, turn on the 
high-pressure manual valve, and start up 
the vacuum pump to vacuumize the 
high-pressure side hose. And turn on the 
auxiliary valve to vacuumize for the 
system to 30psi, 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. 

 

3）

Type & amount of refrigerant oil charged

Regulated amount: SP10 type, 150ml. 

It is unnecessary to charge the refrigerant oil 
into the newly-mounted A/C system, and it is 
required to complement some refrigerant oil 
only when a certain part is needed to repair or 
when the vehicle is driven to a specified 
mileage.  

The amount of implementing oil required 
when replacing parts is as follows: Evaporator 
and condenser: 30ml. Drier: 20ml. and pipe: 
10ml.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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6. Methods of Refrigerant Vacuumizing 

(2) 

Turn on the high- and low-pressure valves 
of manifold pressure gauge, and start up 
the vacuum gauge. 

It is difficult to pump out the water from the 
refrigeration system when vacuumizing. But 
the vacuumizing can reduce the fluidization 
point of water after the vacuum is generated in 
the refrigeration system, which enables the 
water to boil at the lower temperature, and 
pump  out  it  in  the  form  of  steam  from  the 
system. 
Conduct the leak check firstly before 
vacuumizing. If vacuumizing without the leak 
check, it is difficult to find out the leaking 
position after vaccumizing when there is a 
certain leakage phenomenon.   
The purpose of vacuumizing is to further check 
the air tightness of the refrigeration system 
under the vacuum condition, and prepare for 
the system’s refrigerant charging. Its 
procedures are as follows: 
(1) Connect the high-pressure gauge hose to 

the high-pressure service valve joint of 
refrigerant tank, shown in the figure below, 
connect the low-pressure gauge hose to the 
low-pressure service valve joints on the 
pipe from the evaporator to the A/C 
compressor, and connect the intermediate 
hose to the interface of vacuum pump.

 

 

 

 

 

 

 

 

 

 

Vacuumizing 

1-

 Connect to low-pressure service valve hose

   

2-

 Connect to high-pressure service valve hose

 

3-Low-pressure gauge

   

4-High-pressure gauge

   

5-Low-pressure manual valve

   

6-High-pressure manual valve

   

7-Vacuum pump

   

 

 
 
 

 

 

On

 

On

 

On

 

Low
pressu

High 
pressure 

(3) The vacuum pump works for at least 15 

min to make the vacuum reading of 
low-pressure gauge below 30psi . If the 
vacuum reading can’t be obtained, turn off 
the manual valves at the high- and 
low-pressure sides, stop vacuumizing, and 
check the leaking position. 

(4) Turn off the valves, and the gauge needle 

doesn’t return back within 10 min, which it 
is called the vacuum leakage check method. 
If the vacuum down, it shows that there is a 
leaking position which can be found out by 
using a leakage detector. 

(5) 

If the gauge needle doesn’t considerably 

 

 

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return back within 10 min, it indicates that 
the system is normal and the refrigerant can 
be charged into the system. 

(6) Restart the vacuum pump, and turn on the 

low-pressure valve of the manifold 
pressure gauge to continuously vacuumize 
15 min. Then, turn off the low-pressure 
valve to stop vacuumizing, and prepare for 
charging the refrigerant. 

 
7. Refrigerant Recycling Equipment Operation Guide 
Recycle the refrigerant from the 
refrigeration device 
When the refrigerant is removed from the 
refrigeration device under the following 
conditions, a recycling receiver shall be 
applied to recycle the refrigerant.   
Before the components on the refrigerant pipe 
are replaced. 
When moisture or air enters into the 
refrigerant pipe. 
When excessive refrigerants are charged into 
the system. 

 

 

WARNING: 

(1) 

When the recycling receiver is required, take care to operate it according to the 

requirements of device manufacturer's instructions. 

(2) After the completion of recycling work, measure the level of compressor oil recycled so 

that the same quantity of oils are added to the refrigeration device in the future. 

Operation guide for refrigerant recycling receiver 

1.  Install the manifold pressure gauge kit on the service valve. 

2.  Recycle the refrigerant from the refrigeration device. 

(a)  Connect the intermediate hose to the recycling receiver. 

(b)  Operate the recycling receiver. 

(c)  Open the manual high- and low-pressure valves on the refrigeration pressure gauge kit. 

1.  After the completion of recycling work, turn off the recycling receiver. 
2.    Remove the manifold pressure gauge kit from the service valve.

 

DRAINED 
OIL 
QUANTITY 

OIL BOTTLE 

 

 

 

 

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