Walchem WebMaster ONE Instruction Manual page 112

Day of Week: Click on the check box next to the days of the week during which you want a relay
activation to occur. If a box is checked and you don't want an addition that day, click it to un-
check the box.
Time: Type in the text boxes the hour and minute for the addition to occur. Use the arrow for the
pull down menu to select between AM and PM.
On Time: Type in the text box the amount of time that you want the relay to be activated. Any
value between 1 and 1440 is acceptable.
For Bi-Weekly or Monthly Modes, repeat this process for each week in the cycle.
Daily Schedule
(only appears if the Relay Control Mode is selected as Daily)
Additions: Click on the check box next to the additions that you want to occur every day. For
example, if you want to activate the relay 4 times per day, check Additions A through D. If a
check is in a box and you don't want that addition to happen, click on the box to un-check it.
Time: Type in the text boxes the hour and minute for the addition to occur. Use the arrow for the
pull down menu to select between AM and PM.
On Time: Type in the text box the amount of time that you want the relay output to be active
when it makes its addition. Any value between 1 and 1440 is acceptable.
Assign Bleed Lockout Relay
If you want to lockout bleed after the biocide addition, click on the arrow for the pull down menu
and select the relay you have configured as the bleed relay (normally R1).
Bleed Lockout Time
If you want to lockout bleed after the biocide addition, type the desired lockout time (in minutes)
in this text box.
Prebleed Type
If you want to bleed the system to drop the conductivity prior to the biocide addition, click on the
radio button and select the method of prebleed desired.
Select Not Used if no prebleed is desired.
Select Time Based to open the bleed valve for a fixed amount of time prior to each
biocide addition.
Select Conductivity Based to bleed until a conductivity set point is achieved prior to each
biocide addition.
Assign Prebleed Relay (only appears if Prebleed is Used)
Click on the arrow of the pull down menu to select which relay is used for the Bleed function
(normally R1).
Assign Prebleed Conductivity Input (only appears if Prebleed is Conductivity Based)
Click on the arrow of the pull down menu to select the sensor input which is used for system
conductivity (normally S1).
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