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OPERATIONAL GUIDE
An overwiev of pH and ORP proportional control is presented in the graph below.
LEDs status STATUS SERVICE pH/Chlorine (controlling and pump off) (controlling and pump run)
The alarm relay is energized (no alarms).
Analog outputs follow the assigned parameters based on settings (BL121, BL123).
Reagent pumps are disabled:
• immediately after power-on for a period of time defined in pH / ORP Startup dosing delay
• when acid pump is OFF (manually controlled)
• if one or more high / low alarms and / or process errors are active
• when the Hold Input or Remote Hold events are active
• pump operation has exceeded time set in the Overtime safety timer selection
• upon entering Setup
Manual / Auto Pump Control for pH or Chlorine Control
Each pump can be set to MANUAL control by selecting the On 10s / OFF options.
When On 10s is selected the pump runs continuously for 10s. To increase the time up to 90 seconds, press the Add 10s
button. The remaining time is displayed next to the selected pump in the menu. Pressing the OFF button will stop the pump.
To return to the automatic mode, select Auto for each pump. In Auto mode the pumps will be activated when the measurement
reaches the set point value.
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