Gree LSQWF65M/N-M - Removal and Installation of Shell and Tube Exchanger

AIR COOLED SCROLL CHILLER MAINTENANCE
42
Removal and Installation of Shell and Tube Exchanger
Remarks: when inspect the water system and confirm that the shell and tube exchanger is damaged and needs to be
replaced, cut off the power of the unit and reclaim the refrigerant.
Step Illustration Handling Instruction
1. Loosen the water
inlet and outlet.
Remove the external
front panel of shell
tube.
z Drain the pipe.
z Remove the pipeline
connected with shell
tube.
z Remove the sheet metal
at the lower side of tne
unit.
3. Unsolder the tube
connecting the heat
exchanger (there
may be different heat
exchangers for
different units, so
connection position
of each connection
pipe must be marked
during welding to
avoid blow-by of the
system by error
connection.
z Wrap the welding place
of connection between
copper pipe of shell
tube and tube with wet
cloth.
z Remove the 4 pieces of
pipeline with the
welding gun.
4. Unscrew the 4
bolts fixing the heat
exchanger support.
z Unscrew the 4 screws
fixing the shell tube
with the spanner.
z Pull out the shell tube.
5. Replace the new
shell tube and
connect its pipeline
properly.
z Replace the new shell
tube with the same
model.
z Wrap the welding place
of connection between
copper pipe of shell
tube and tube with wet
cloth. Weld the pipline.
z Connect the water
pipeline.
z Install the sheet metal.