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.
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.
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