PROGRAMMING AND OPERATION
pH Control Mode (Manually adjusted pH control and Purifier)
Note: Optional pH Control Acid Tank & Pump #’s 75004, 75005, 75006, or 75007 must be installed for this mode to function.
The Digital Unit must be initially programmed through the Installer Menu (Select System mode – see pg. 35), to the pH Control mode. In this mode, the Purifier and pH control are adjusted manually. The display toggles from the Purifier display to the pH Feed Display (then the Acid Meter but only when the acid pump is actually feeding).
The total volume of acid dispensed is available in the “Test Pool Pilot” mode, which is reset through the Maintenance Menu and can indicate when more acid needs to be added to the tank.
pH Feed Rate Start up
Adjust the Purifier levels as described on pg. 29. The pH Control is adjusted by assigning the amount of acid that is to be delivered by a feed rate pump with a user programmable fixed rate between “Acid Feed Off” to “330 oz/day” (10,000 ml/day). If the acid feed rate is not known, follow these instructions:
1.Test and record your starting pH level. See Basic Water Chemistry on pg. 7.
2.Press the Up or Down Arrow, while the display is in the pH Feed Display. The display will then show the current Feed Rate setting.
3.Adjust the Acid Feed rate to 5 oz per day per 10,000 gallons (148 mL per day per 38,000 liters) of pool volume.
4.After adjusting the acid feed rate to the desired value, press “Select”.
5.Test the pH the following day and adjust the Acid Feed rate higher or lower as needed.
6.Repeat until your desired pH level is maintained.
This will require periodic testing and adjusting as chlorine and pH demand changes.
pH Programming
Follow the instructions from the Purifier mode for programming start up. In addition, enter the Installer Menu and program the following:
•Press MENU, press ∆ or ∇ until “Installer menu” is displayed, then press and hold SELECT for approximately 13 seconds to enter Installer menu.
•Press ∆ or ∇ until “Select system” is displayed, then press SELECT (Purifier is the factory setting).
•Press ∆ or ∇ to program “Select system” to ”pH control”, then press SELECT.
•Press ∆ or ∇ until “Set Relay 1” is displayed, then press SELECT (Relay not used is the factory setting)
•Press ∆ or ∇ to program “Set Relay 1” to “Acid pump” (controlling the Acid pump through the Digital Relay) or “One speed pump” (controlling the Acid pump through the #75008 Auxiliary Relay Kit) depending on the configuration.
Total Control Mode - Pool Chemistry Control (PCC) Mode
Note: Optional Pool Chemistry Controller #75001and pH Control Acid Tank & Pump #’s 75004, 75005, 75006, or 75007 must be installed for this mode to function.
The Digital Unit can be programmed to the Total Control option in which the purifier and pH levels are monitored and controlled automatically. In this mode, ORP (purifier) and pH sensors are used to constantly test the pool water and determine whether chlorine or muriatic acid is needed to maintain proper levels. The system automatically enters the Total Control configuration if the Digital unit is able to communicate with the Pool Chemistry Controller. The system will display “Error Purifier Off” if the Digital unit is not able to communicate with the Pool Chemistry Controller. Ensure the wire interface is properly connected between the Digital unit and the Pool Chemistry Controller.
The Total Control display cycles between the ORP display, pH display, and the Salt/Time of Day/Temperature display.
The pH and ORP adjustment “set points” are accessible when the ORP or pH “measurement - set point” is on the display. To access through the ORP or pH display, press the arrow up or down, while the respective mode is displayed. This will then change to the specific menu to allow reprogramming the set points. To retain the new setting, press Select when finished.
Total Control Programming
Follow the Programming
Set pH overfeed, Set pH min, Set pH max, Calibrate pH, Enable / Disable ORP, and Set ORP overfeed.
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