Flooded type water cooled screw chiller (PCB Control)
35
2).cooling stop
4.
Sensors
1).Temperature sensors
The temperature sensors that unit use are all NTC thermistors, including chilled leaving water
temperature, chilled entering water temperature, discharge temperature, EXV discharge temperature.
NO.
Name
Type
Remark
code
1
Chilled entering water temp.
NTC,10k@25
℃
Emerson
202301300703
2
Chilled leaving water temp.
NTC,10k@25
℃
Emerson
202301300703
3
Cooling entering water temp.
NTC,10k@25
℃
4
Cooling leaving water temp.
NTC,10k@25
℃
5
Discharge temp.
6
EXV discharge temp.
NTC,10k@25
℃
Carel
202301300561
Thermistors
For PTC thermistors, resistances vary with various temperatures.
Location
Motor thermistor locates in the motor winding and is connected to the compressor protection module
which will cut off the main power when motor winding temperature exceeds 110 °C. Water temperature
thermistors are installed in wells on chilled water inlet/outlet and cooling water inlet/outlet. Refer to the
stop
Running time
is enough
NO
Stand
by
YES
Unload to 50% step
Unload to 25% step
Compressor off
Compressor 25%SV off
Cooling tower off
Cooing pump off
Chilled pump off
