GREE U-Match 6 SERIES UNIT SERVICE MANUAL
103
Removal of electronic expansion valve
Note: Before removing the electronic expansion valve, make sure there is no refrigerant in the pipeline and power is cut off.
Step Picture Work instruction
2. Remove the electric box.
The connection wires inside and outside
the electric box should be removed.
When removing the electric box, be careful
to protect the components.
3. Remove the electronic
expansion valve.
Take off the coil of electronic expansion
valve.
Loosen the connection pipe of electronic
expansion valve by welding. Then remove
the connection pipe.
Note: When welding the pipe, do not let
the flame bunt the other components.
4. Take out the electronic
expansion valve.
Take out the electronic expansion valve
5. Install the new electronic
expansion valve.
Weld the connection pipe of electronic
expansion valve.
When welding the electronic expansion
valve, the valve should be wrapped with
wet cloth.
Nitrogen welding: the pressure of nitrogen
is 0.5±0.1kgf/ c ㎡ (relative pressure).
Note: When welding the pipes, do not let
the flame burn the other components.
Install the coil of electronic expansion
valve.
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