Samsung Electronics 250
Piping Diagram
High Pressure Protection
▪ Purpose
Prevent abnormal high pressure to protect the system and compressors.
▪ Concept
▪ Control specifications in detail
4th step Comp trip: Compressors stop and an error is triggered (E407).
Compressor Trip (E407)
※ High Pressure < 30 k gf /cm
2
,g : Compressor Trip release
Hz Hold area
Hz Down area
HP Down area
Normal operation
Hz Hold release
Hz D own release
HP Down release
Compressor Trip (E407)
※ High Pressure < 30 k gf /cm
2
,g : Compressor Trip release
Hz Hold area
Hz Down area
HP Down area
Normal operation
Hz Hold release
Hz D own release
HP Down release
※ T.HP = Target Hig h Pressure
36
37
38
40
High Pressure (k gf /cm
2
,g )
32
& (T.HP + 4)
40
High Pressure (k gf /cm
2
,g )
30
& (T.HP + 3)
28
& (T.HP + 1.5)
Cooling
Heating
7-3 Functions (cont.)
7-3-2-5 Protective control
7-3-2 Control (cont.)
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