Gree GMV-120WM/B-F

GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL
238
5. Install a new electric
expansion valve.
●
Weld the connecting 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±0.1 kgf/cm2
(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 original
position and screw it.
●
Connect all lines.
7. Check and install the
front panels.
●Check various parts and connecting
lines.
●
If no problem is found, hook the
front panels and tighten the screws.