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5.4 Bleed
Menu
The Bleed Menu provides the following settings: Set Point, Dead Band, Bleed Mode, Bleed Vol,
Makeup Vol, HOA. The Bleed menu will be indicated on the display by one of the following: (The
'A' indicates that the output is being controlled automatically.)
Hint: For easiest programming, program Bleed Mode first, then step through the rest of the bleed
parameters. The modes are defined as follows:
H
High Set Point
High set point is the default setting, where the bleed relay activates when the conductivity
rises above the set point value.
L
Low Set Point
Low set point, or reverse set point, is where the bleed relay activates when the conductivity
drops below the set point value.
B
Bleed Volume on Makeup Volume
In bleed volume on makeup volume, a flow of a programmable volume of makeup water
triggers the relay to activate, and it stays activated until the bleed water meter detects the
programmed volume of water.
Bleed A
OFF
Indicates that the bleed output is currently OFF.
Bleed A
10:00
Indicates the length of time that the Bleed output has been ON.
Bleed A
NO FLOW
Indicates that bleed control has been suspended because there is presently no flow past the flow
switch.
Bleed A
LOCKOUT
Indicates that the output is currently locked out due to a biocide add or biocide lockout.
Bleed A
TIMEOUT
Indicates that the bleed output has been on longer than the Time Limit.
Set Point
This is the conductivity value at which the bleed solenoid valve is turned ON. The factory default setting for the
WCT controller is for the Bleed output to turn on when the conductivity is higher than the set point. This may be
changed at the Control Direction screen.
Dead Band
This is the conductivity value that when combined with the set point determines when the bleed output turns OFF.
Assuming that the control direction is set for normal operation (High Set Point) the bleed output will turn off when
the conductivity drops below the set point minus the Dead Band. For example: The set point is 1500 µS/cm and the
Dead Band is 200 µS/cm. The bleed output turns ON when the conductivity reading is greater than 1500 but does
not turn OFF until the conductivity drops below 1300.
Time Limit
This menu allows you to set a maximum amount of time for the bleed. The limit time is programmed in hours and
minutes and can be set between 1 minute and 8 hrs: 20 minutes. If the time limit is set to zero, then the valve may
be open indefinitely. If the maximum time is exceeded, the bleed valve will close and will not re-open until the
"Reset Timer" menu is reset by an operator.
Reset Timer
Only appears if the time limit above has been exceeded. Use the up or down arrow to change "N" to "Y", then press
ENTER.
Bleed Vol
This menu is only displayed if the Bleed Mode is set to BD Vol on MU Vol.
Use the arrow keys to select the volume of water to bleed once the relay is triggered.
Makeup Vol
This menu is only displayed if the Bleed Mode is set to BD Vol on MU Vol.
Use the arrow keys to select the volume of makeup water required to trigger the bleed relay.
Bleed Mode
H / L / B
This menu allows you to set the bleed mode as described above. Press ENTER and then use the Up or Down arrow
keys to select between High Set Point, Low Set Point or BD Vol on MU Vol.
H O A
The "Hand Off Auto" screen allows you to select the operating mode of the bleed output. In Hand (manual) mode,
the output is turned on immediately for a maximum of 10 minutes. If you walk away the output will return to Auto
mode at the end of that time. In Off mode the output will stay Off indefinitely. In Auto mode the bleed output will
respond to changes in conductivity based on the set point. The HOA mode of the bleed output is indicated on the
bleed status lines.
