Gree GMV5

GREE Photovoltaic Direct-driven Inverter Multi VRF Units
289
Removal procedure of electronic expansion valve
Note: Before removing the electronic expansion valve, make sure no refrigerant is inside the pipeline
and power has been disconnected.
Step
Diagram
Operation Procedure
3. Disassemble
the electric
expansion valve.
●Remove the coil from the
electric expansion valve.
●Heat the connection pipes
of the electric expansion
valve by welding and remove
the pipes. Note: Avoid nearby
parts from being burnt during
welding.
4. Remove the
electric
expansion valve.
●Remove the electric
expansion valve.
5. Install a new
electric
expansion valve.
●Weld the connection pipes
with the electric expansion
valve;
●Before welding, cover the
valve with wet cloth.
●During welding, charge
nitrogen into the pipes. The
pressure should be controlled
within
0.5±0.1kgf/cm
2
(relative pressure). Note:
Avoid nearby
parts from
being burnt during welding.
●Install the coil on the electric
expansion valve.
6. Fix and wire
the electric box.
●Put the electric box back to
the original position and
screw it;
●Connect wires same as the
original.