Evoqua Wallace & Tiernan Depolox 3 plus, Manual, Page: 87 / 157

WT.050.560.001.UA.IM.0714 73
Depolox
®
3 plus ReSIDUAl ANAlYZeR
eVoQUA W3T140188
Inserting the Membrane Sensor for Ozone Oz7 into the Flow-Through Adapter
1. Push the sensor through the cover into the flow-through adapter until
it touches the inflow mating connector. It may be necessary to position
the flow-through adapter cover correctly by turning it.
NOTE: Remove air bubbles from the surface of the membrane, bubbles
on the membrane will interfere with the measurement!
2. Connect the measuring signal cable to the OZ7.
Storing the Membrane Sensor for Ozone Oz7
1. Lift elastomer seal and unscrew membrane cap.
2. Wash the membrane cap and electrode finger with clean (distilled) water.
3. Allow the electrode finger and the cap to dry in a dust-free place.
4. Then screw the dry membrane cap loosely onto the electrode shaft.
NOTE: Ensure that the membrane never touches the measuring electrode.
Restarting: Refer to “Commissioning the membrane sensor for ozone
OZ7”.
Error in Membrane Sensor for Ozone Oz7
Trouble-shoot and debug if the output signal is too low or irregular:
1. Remove air bubbles on the membrane (e.g. tap the inflow mating
connector); air bubbles prevent the ozone from diffusing through the
membrane and distort the measurement.
NOTE: Air bubbles on the remaining parts of the sensor are normal after
initial commissioning or restarting; they disapate after one or two days.
2. Replenish electrolyte.
3. Open membrane sensor. To do this, push the elastomer seal to one
side to permit the inflow of air and unscrew the membrane cap. Pour
out the electrolyte.
4. Wash the electrode finger and the membrane cap with clean (distilled)
water and allow to air dry.
For further procedure, see “Commissioning the membrane sensor for
ozone OZ7”.