Evoqua WALLACE & TIERNAN SFC, Original Instruction Manual

Page: 215 / 288

SFC
Operation
6.
215
Setpoint? Due to modification of the
measuring range the setpoint of the
controller
is outside the measuring range. Reset the controller setpoint or adjust
the measuring range
Sensor temp? Error in the temperature
measurement of the sensor
measurement module/SiDiSens
Interruption in the temperature
sensor or cable Check the temperature sensor and
cable of the measurement module
Cl
2
comb? Free Cl
2
measurement via CAN bus
is not available
Check SiDiSens DES, check setup of
CAN bus
Cl
2
++? pH<6 or pH>8,75
pH measurement via CAN bus is not
available Check pH measurement, check
SiDiSens DES, check setup of CAN
bus
Cell ? In 3-electrode cells
Chlorine sensor not screwed in.
No grit cleaning.
Sensor, sensor cable or sensor
module defective.
Sensor measuring module µA
measuring range exceeded
With pH, F
-
and mV modules
Sensor, sensor cable or sensor
module defective
In membrane sensors
Sensor, sensor cable or sensor
module defective
Sensor measuring module µA
measuring range exceeded
In conductivity modules
Sensor, sensor cable or sensor
module defective
Screw in sensor correctly.
Check grit cleaning.
Check sensor, sensor cable or sensor
module, replace if necessary.
Select higher µA measuring range
Check the sensor, sensor cable and
sensor module, replace if necessary
Check the sensor, sensor cable and
sensor module, replace if necessary
Check the sensor, sensor cable or
sensor module, replace if necessary;
clean sensor
Error message Cause Remedy