Gree GMV-280WM/E-X - Page 274

GREE GMV5E DC INVERTER VRF UNITS SERVICE MANUAL
270
Compressor
Precondition: No refrigerant exists in the pipeline system and the power supply has been disconnected.
Step
Diagram
Operation Procedure
4. Remove the
suction and
discharge pipes.
●Heat the suction and discharge
pipes by acetylene welding and then
remove the pipes.
●During welding, charge nitrogen into
the pipes. The pressure should be
controlled within 0.5±0.1 kgf/cm
2
(relative pressure).
●Avoid nearby materials from being
burnt during welding.
5. Remove the
compressor.
●Remove the compressor from the
chassis.
6. Install a new
compressor on the
chassis.
●Put the compressor in a proper
position.
●Use a wrench to screw the nuts on
the compressor.
●The compressor should not be
installed upside down.
7. Connect the
suction and
discharge pipes of
the compressor to
the pipeline system.
●Heat the suction and discharge
pipes by acetylene welding and then
install the pipes.
●During welding, charge nitrogen into
the pipes. The pressure should be
controlled within 0.5±0.1 kgf/cm
2
(relative pressure).
●Avoid nearby materials from being
burnt during welding.
8. Connect the power
line to the
compressor, and
install the electric
heating belt, top
temperature sensor,
and discharge air
temperature sensor.
●Put the power line in a proper
position.
●Use a screwdriver to screw the
power line.
●Install the electric heating belt, top
temperature sensor, and discharge
air temperature sensor.
●Put the sound-proof sponge back to
position.