Samsung AHU Series Service Manual page 26

Disassembly and Reassembly
No Parts
12 Ass'y 4way Valve 1) Purge the Coolant first.
2) Unscrew and remove 2mounting screws
3) Unscrew and remove 2 mounting screws
4) Separate the pipe from the Entrance/Exit
3-18
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Procedure
in muffler.
in Service Valve. (Use +Screw Driver)
using a welder.
When removing the compressor,
Heat Exchanger, and Pipe, purge the
Coolant inside the Compressor
completely and remove the pipe
with a welding flame.
Remark
Samsung Electronics