A/C System Evacuation; A/C System Recharge - Chery A1 2009 Service Manual

1. Connect the refrigerant recovery/recycling station
to the vehicles high and low side A/C line
connectors.
NOTE: The refrigerant recovery/recycling station
connectors are connected to the vehicle in the fol-
lowing way:
• BLUE connector (1) is connected to the A/C low side
fitting.
• RED connector (2) is connected to the A/C high side
fitting.

A/C System Evacuation

CAUTION:
Do NOT run the engine with a vacuum pump in operation or with a vacuum present within the A/C
system. Failure to follow this caution will result in serious A/C compressor damage.
NOTE :
Special effort must be used to prevent moisture from entering the A/C system oil. Moisture in the oil is very difficult
to remove and will cause a reliability problem with the A/C compressor.
If the refrigerant system has been open to the atmosphere, it must be evacuated before the system can be filled.
Moisture and air mixed with the refrigerant will raise the compressor high pressure above acceptable operating lev-
els. This will reduce the performance of the A/C system and damage the A/C compressor. Moisture will boil at near
room temperature when exposed to vacuum.
NOTE :
When connecting the service equipment coupling to the line fitting, verify that the valve of the coupling is fully closed.
This will reduce the amount of effort required to make the connection.
To evacuate the refrigerant system:
1. With the engine OFF, connect a suitable charging station, refrigerant recovery machine or a manifold gauge set
with vacuum pump and refrigerant recovery equipment. Do not operate the engine with a vacuum on the A/C
system.
2. Open the suction and discharge valves and start the vacuum pump. The vacuum pump should run a minimum
of 45 minutes prior to charge to eliminate all moisture in system. When the suction gauge reads to the lowest
degree of vacuum possible for 30 minutes, close all valves and turn off vacuum pump. If the system fails to
reach specified vacuum, the refrigerant system likely has a leak that must be corrected. If the refrigerant system
maintains specified vacuum for at least 30 minutes, start the vacuum pump, open the suction and discharge
valves. Then allow the system to evacuate an additional 10 minutes.
3. Close all valves.
4. Turn off and disconnect the vacuum pump.
5. Charge the refrigerant system.

A/C System Recharge

After all refrigerant system leaks have been repaired and the refrigerant system has been evacuated, a refrigerant
charge can be injected into the system.
CAUTION:
A small amount of refrigerant oil is removed from the A/C system each time the refrigerant system
is recovered and evacuated. Before charging the A/C system, you MUST replenish any oil lost dur-
ing the recovery process.
1. Evacuate the refrigerant system (See A/C System Evacuation and Recharge in Section 13 Heating & Air Con-
ditioning).
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ON-VEHICLE SERVICE
Chery Automobile Co., Ltd.
PZSM130027