Midea MWSC340A-FB3 - Start;Stop Process

Flooded type water cooled screw chiller (PCB Control)
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3. Start/stop process
1).cooling start
Power-on
Detect
fault
YES
Clear failure
Start on
Chilled pump on
Cooling pump on
cooling tower on
Water flow
switch
protection
Stop Clear failure
YES
NO
Water temp is ok.
Oil heating time is
enough
Stop time is enough
NO
Stand
by
YES
Compressor 25% SV on
Compressor Y-△ start
Compressor 50% SV on
25% SV off
Compressor 75% SV on
50% SV off
Energy adjust
Stand
by
unload
loading
Stop
Water
temp.
is ok
NO