GREE U-Match 5 SERIES UNIT SERVICE MANUAL
89
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
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.
6. Secure the electric box
and arrange the wires as
required.
●Put the electric box back in place
and tighten up the screws.
●Arrange the wires as original.
7. Check and install the
panels.
●Check whether each component
and connection wire is well
connected.
●If everything is OK, install the
upper, left and right panels.
Tighten up the screws.
