Dongfeng DFA1101GZ5AD6J-907. Manual — part 59
Air-conditioner and Heater
BF-19
Air Flowing Direction
Note: The specific operate method refer to its maintenance tool manual.
Air-conditioner and Heater
BF-20
Check the Leakage of the Refrigerant
Operational procedure
In order to be convenient for checking the leakage of the refrirator, please follow the method
below:
1.Start the engine;
2.Start the air-conditioner;
3.Adjust the fan switch to the "4" position;
4.Set the temperature to the lowest;
5.Then operate the refrigerating system for more than 5 min-
utes.
The checking of the refrigrant leakage should be after the
stop of the engine immediately. Begin from the high-pressure
pipe. That is because after the stop of the circulation, the pres-
sure of the high-pressure pipe will be down, and the pressure of
the low-pressure pipe will be up, but it is easier to check the
leakage at the high pressure condition.
Check
Clean the checking part with a piece of cloth before checking the fitting of the pipe carefuly.
Compressor:check the shaft seal, the hole of the bolt, and the around of the electromagnetic clutch.
Oil storage container:check the pressure-protecting switch,fuse plug and fuse pin.
Check the around of the maintenance valve, make sure the valve core is tightening, the maintenance bonnet
must be connected on the valve(avoid leakage), and check if there is anything in the bonnet.
Evaporator:after the stop of the engine, put the device into the outlet pipe immediately, staying for more than
10 seconds.
Air-conditioner and Heater
BF-21
Make sure the quantity of the filled refrigerant
As for the quantity of the filled refrigerant, you can measure by inspecting the flow of the refrigerant from
the window, and read the pressure gauge of the high and low pressure pipe.
Procedure
Air-conditioner and Heater
BF-22
Air-conditioning System
1.Evaporator assy
2.Evaporator lower bracket
3.Evaporator exhaust pipe
4.Bracket assy--evaporator inlet and outlet pipe
5.Pipe assy--connecting evaporator and conden-
sator
6.Pipe assy--connecting evaporator and com-
pressor
7.Pipe assy--connecting compressor and con-
densator
8.Compressor assy--with clutch
9.Condensator assy--with drier and bracket
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