GREE GMV5E DC INVERTER VRF UNITS SERVICE MANUAL
281
Heat exchanging board
Precondition: No refrigerant exists in the pipeline system and the power supply has been disconnected.
Step
Diagram
Operation Procedure
5. Install a new heat
exchanging board.
●Screw the support of the heat
exchanging board and fix the board
onto the chassis.
●Put the heat exchanging board
based on the position of the suction
and discharge pipes and weld the
pipes with the heat exchanging board.
●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.
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.
