252) Open the doors of both the analyzing module and the control module.3) Remove old sensor from flow cella) Unplug the sensor's wires from the sensor, by grabbing the connector at the top end of thesensor and unscrewing the connector.b) Unscrew the sensor from the flow cellc) Pull the sensor up until its glass tube clears the hole.4) Install new Sensora) Open the replacement sensor's box, and remove the sensor by the metal connector.b) Remove the plastic cap on the glass end of the probec) Hold the sensor by its metal connector, with the glass tube pointing down, and insert the glasstube into the flow cell.d) Screw the probe into place. DO NOT OVERTIGHTENe) Attach the sensor wire onto the probe.Replacing the Temperature Probe1) Turn off the inlet and outlet water to the flow cell and the power to the analyzer.2) Open the doors of both the analyzing module and the control module.3) Remove the four (4) wires from the temperature probe in the control module.4) Remove old sensor from reading cell:a) Unscrew the compression fitting from the temperature probeb) Pull the probe up until it clears the fitting.5) Install new sensor:a) Insert the temperature probe into the fittingb) Screw the compression fitting around the probe.c) Connect wires to amp, pH, Temp module following color coding5.1.6 Troubleshooting5.2 Turbidity Measurements5.2.1 InstallationIf the WaterGuard system was ordered with the Turbidity pre-installed some of these steps may havebeen completed in the factory.Supplied Components