Steps to set up or recalibrate airflow for the ozone system:
Notes: If the gauge readings show the needle in the green range and the SCFH ball is in the range
appropriate for the ozone generator, these steps are unnecessary. It does not matter what steps
were involved in achieving the gauge result, the steps below are one way of achieving them.
Steps following the #symbol are intended for installations using an oxygen concentrator.
#Disconnect the braided oxygen tubing from the bottom of the gauge mounted underneath the ozone
generator.
•Turn on water flow through the venturi injector and look to the airflow (floating ball) gauge on the
underside of the ozone generator. Turn the black knob counter-clockwise (open) completely; the needle on the round gauge should be at zero
due to no restriction.
oThe floating ball will show how much airflow is being generated by the suction of the venturi.
•Adjust only the bypass valve at the venturi injector to raise or lower the airflow gauge’s floating ball to just above our target airflow. We want
to generate suction above our target airflow rate.
oCD10 & CD10/AD adjust only the injector bypass valve until 6-7 SCFH displayed on airflow gauge
oCD12 & CD12/AD adjust only the injector bypass valve until 10-11 SCFH displayed on airflow gauge
oIf the airflow gauge’s ball remains at zero no matter the adjustments, proceed to the section regarding No suction at venturi. Afterwards,
return to set up airflow again.
oIf the airflow gauge’s ball rises above 1 SCFH but cannot rise up to above the target SCFH reading, proceed to the section below regarding
Finding an air leak. Afterwards, return to set up airflow again.
#Plug the oxygen concentrator’s power cord into a wall outlet and set the oxygen concentrator’s airflow gauge (not the ozone generator’s gauge)
to the optimal flow rate while the tubing is still disconnected from the gauge.
oCD10 & CD10/AD adjust oxygen concentrator’s flow gauge to 4 SCFH
oCD12 & CD12/AD adjust oxygen concentrator’s flow gauge to 8 SCFH
oIf the oxygen concentrator’s gauge will not rise up to the desired SCFH, there is an issue within the oxygen concentrator. Consult the
associated manual for assistance resolving the issue. Afterwards, return to set up airflow again.
#Reconnect the oxygen tubing to the underside of the gauge assembly. Leave the oxygen concentrator powered.
•With water flowing through the venturi, close (turn clock-wise) the black knob on the ozone generator’s gauge assembly to lower the airflow
reading to the target SCFH. Confirm the needle of the round vacuum gauge moves to the left into the green range.
oCD10 & CD10/AD - 4 SCFH
oCD12 & CD12/AD - 8 SCFH
oIf the needle does not move left into the green, slightly increase the suction at the venturi (close the bypass valve more) and/or reduce the
output of the oxygen concentrator (if installed) to move the needle comfortably into the green range.
"It is more important to have the needle well into the green range of the gauge rather than having optimal SCFH readings, the installation
will be fine if you within the acceptable SCFH range listed above.
"If the needle still will not move to the left after adjustments in the previous step, confirm there is no air leaks by referring to the Finding
an air leak section below. Afterwards, return to set up airflow.
oIf the needle moves into the green range but the SCFH is too low, restart this step by making more adjustments to increase suction at the
venturi, and reducing oxygen concentrator flow (if installed). If the SCFH is still too low, there are a few options:
"Confirm there are no leaks by referring to the Finding an air leak section below. Afterwards, return to set up airflow.
"If no leaks are found, remove a possible throttle in the ozone line. Remove the secondary check valve underneath the ozone generator
assuming a vacuum break assembly (pictured in the Finding an air leak section) is installed.
"Increase water flow or pressure to the pipe where the injector is plumbed by driving up a variable speed pump or routing more water
through the bypass that sends water to the venturi (while still maintaining minimum flow rates for any installed heater).
"Attempt to run the system with a lower vacuum setting than normal: Bring the SCFH up to acceptable levels and if the needle of the
vacuum gauge is still to the left of zero, reconnect all tubing and power cords to default positions and refer to Resetting the vacuum
switch section below.
"Change the injector manifold to a lower flow rate / pressure model. Consult your distributor or CWT regarding this.
#Reconnect the power cord for the oxygen concentrator back to the AIF box where it was originally installed.
•Confirm the system turns off and on whenever water flow is given to the venturi injector.
oIf the system does not turn off when the vacuum is denied, increase vacuum on the system by moving the needle farther into the green range.
"If this does not work, refer to Resetting the vacuum switch section below.
