Gree GMV-VQ680WM/C-X Service Manual page 366

Gree
5.1.15 Preparation for Removing and Installing Solenoid Valve
Steps:
(1) Use the power circuit breaker to switch off the power of the GMV6 HR VRF system.
(2) Make sure that the unit pipeline system is free of refrigerant.
(3) Remove the unit's upper and bottom panels by referring to 5.1.1 Removing the Unit
Panel.
Removing procedure
(1) Use a tool to remove the solenoid valve coil.
(2) Use a pipe cutter to cut off the solenoid valve inlet and outlet pipes and remove the valve
body.
(3) Use gas welding to heat the pressure switch connection port and pull out the solenoid
valve inlet and outlet pipes. Nitrogen protection should be applied during welding; the
nitrogen pressure is 0.5±0.1kgf/cm2 (relative pressure).
(4) Weld and take off the old solenoid valve inlet and outlet pipes from the pipeline.
Installation procedure
(1) Install the new solenoid valve to the exact position.
GMV6 HR DC Inverter VRF Units Service Manual
Cut-off point
364
Cut-off point