Gree GC201808-III, Service Manual

Page: 326 / 362

GREE GMV5 HR HEAT RECOVERY UNITS
322
Heat exchanging board
Precondition: No refrigerant exists in the pipeline system and the power supply has been disconnected.
Step Diagram Operation Procedure
1. Loosen the hooks at
the bottom of the
electric box and the
screws.
●Remove the upper and lower front
panels.
●Loosen the hooks at the bottom of
the electric box.
●Use a screwdriver to unscrew the
electric box.
2. Remove the electric
box.
●Disconnect internal and external
connecting lines of the electric box.
●Protect the internal parts during the
disassembly.
3. Disassemble the
heat exchanging board.
●Heat the connecting pipes of the
heat exchanging board by acetylene
welding and then remove the pipes.
Note: Avoid nearby parts from being
burnt during welding. The joints of
the board must be welded with
copper plated steel. Ensure welding
quality.
4. Remove the heat
exchanging board.
●Unscrew the support of the heat
exchanging board, and remove the
support and board.