Xylem Fixed speed booster sets programming manual/Electronic control board SM30 - Manual (Page 39)

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4 SENSOR F.S. Sensor full scale: this is defined by
the type of sensor chosen.
Pressure
0-10 bar
0-16 bar
0-25 bar
0-50 bar
Level
Ultrasound: 0-15 m
Piezometric: 0-10 m
Temperature
-200 + 850 °C
Flow
DN80 3.62-181 mc/h
DN100 5.65-283 mc/h
DN125 8.84-442 mc/h
DN150 12.7-637 mc/h
DN200 22.6-1131 mc/h
DN250 35.3-1727 mc/h
0-10 bar
0-16 bar
0-25 bar
0-50 bar
Ultras 0-15 m
Piezom 0-10 m
0-10.00 bar
5 LACK OF WATER Device used to check low level/low
pressure with
probes/float/minimum pressure
switch connected to the dedicated
terminals HIGH (22), LOW(23) and
COM(24).
NO PROBES
PR.SW/FLOAT SW
THREE PROBES PR.SW/FLOA
T SW
6 PROBES SENSIVITY Regulating probe sensitivity
according to water conductivity.
5-100 kOhm 50 kOhm
7 FEEDBACK Setting the analog signal used as
system feedback.
If AI1 or AI2 is selected, in case of a
sensor fault feedback is
automatically provided by the
alternative sensor. AI1
AI2
AI1/AI2 AI1/AI2
Regulating probe sensitivity Regulating probe sensitivity Regulating probe sensitivity Regulating probe sensitivity
Regulation is obtained by setting the sensitivity value. For a new regulation, proceed as follows:
Check that the water level covers the probes.
Ensure that L.O.W. AL.DELAY is set at zero.
Vary the sensitivity level slightly until the red “LOW WATER” led is lit and the respective alarm message
appears.
Slightly increase the numerical value of sensitivity until the red “LOW WATER” led goes out.