72-910-02
REV. P
13
4.3.2 Conductivity Set Point
Set this value to the highest conductivity point the controller will allow before a bleed and feed
cycle begins. When the system conductivity reaches this set point the bleed and feed control
outputs will energize. When the system conductivity falls to the conductivity set point minus 5%
the bleed and feed cycle will terminate and the control outputs will de-energize.
The Conductivity Set Point can be changed with the [Up]/[Down] buttons once in programming
mode. The maximum setting is 9999 uS/cm. To save the set point, press the Mode [m] button.
The set point differential is fixed at 5% below the set point. For example,
if the set point is set to 1000uS/cm the bleed and feed outputs will energize at
1000uS/cm and de-energize at 950uS/cm.
4.4 Alarm Conditions
Flow Alarm
With a loss of flow the two (red) LED’s will flash and the display will read “Err Flo.” The
outputs will de-energize. This alarm will reset automatically with the resumption of flow.
Feed Limit Timer Alarm
When the Feed Limit time is exceeded the two red LED’s and the blue LED will flash and
the display will read “Err Lit” and the Feed relay will de-energize. This alarm is reset by:
pressing the M (Mode) button, a flow cycle, or conductivity reaching the set point and
differential.
Bleed Limit Timer Alarm
When the Bleed Limit time is exceeded the two red LED’s and the green LED will flash and
the display will read “Err Lit”. This alarm is reset by: pressing the M (Mode) button, a flow
cycle, or conductivity reaching the set point and differential. This will not de-energize the
bleed relay, only reset the timer.
Bleed and Feed Limit Timer Alarm
When the Bleed and Feed Limit time is exceeded, all the LED’s will flash and the display
will read “Err Lit”. This alarm is reset by pressing the M (Mode) button, a flow cycle, or
conductivity reaching the set point and differential.
Bleed Limit Alarms: will not de-energize the Bleed relay.
Conductivity Over Range Alarm – (Rising Set Point)
If the conductivity is over 9,999uS/cm, all the LED’s will flash and the display will read “Err
9,999” and the Bleed relay will remain on. This alarm is reset by pressing the M (Mode)
button once the conductivity is within range.
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