Instruction manual

48
Bleed Volume per Makeup Volume is used to open the bleed valve allowing a programmed
volume of water out of the system after a programmed volume of makeup water has been added to
the system. This option can only be used if water meters are installed in both the bleed piping and
the makeup water piping.
Time per Makeup Volume is used to open the bleed valve for a programmed amount of time
after a programmed volume of makeup water has been added to the system. This option can only
be used if a water meter is installed on the makeup water line.
Cycles of Concentration is used to open the bleed valve when the ratio of the system conductivity
to the makeup water conductivity exceeds the programmed value. Select the option that matches
the number of different makeup water sources that you will have (up to 3). If you have only one
makeup source, you may control based on cycles of concentration even without a makeup
conductivity electrode connected (by entering the value of the makeup conductivity).
Other (4-20 mA input 4) is used to control the bleed relay based upon a signal from a transmitter
that is connected to 4-20 mA input number 4. This option is only possible if your controller is
equipped with the analog input option card.
Inhibitor Feed Mode
Click on the radio button of the option that you want to use.
Bleed and Feed mode will add inhibitor at the same time as the bleed valve opens, for the same
amount of time. A lockout timer will stop inhibitor feed if the feed time exceed the programmed
limit.
Feed After Bleed mode will add inhibitor after the bleed has finished, for a programmed
percentage of the bleed time.
Feed Based on Makeup Volume mode will add inhibitor for a programmed amount of time after
a specified volume of makeup water has entered the system. This option can only be used if a
water meter is installed in the makeup water line.
Feed as % of Time mode will add inhibitor for a programmed amount of time, after a
programmed amount of time has elapsed.
Other (4-20 mA input 5) is used to control the bleed relay based upon a signal from a transmitter
that is connected to 4-20 mA input number 5. This option is only possible if your controller is
equipped with the analog input option card.
Multiple Sources for the various feed modes above allow you to customize the feed time for
different makeup water sources. The controller recognizes the makeup water source by its
conductivity.
pH Control Mode
Click on the radio button of the option that matches your installation:
Direct pH Sensor should be selected if you will be controlling the pH relay based on a signal
from a pH electrode.
Other (4-20 mA input 6) should be selected if you will control the pH relay based on a signal
from a transmitter that is connected to 4-20 mA input 6. This option is only possible if your
controller is equipped with the analog input option card.