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SYSTEM OVERVIEW
2
pH Control Mode (Manual purifier and pH control)
Note: Requires option # 75004, 75005, 75006, or 75007 pH Acid Feed Pump and Tank System must be installed with the #75003
Digital Controller for this mode to function. Option # 75008 Auxiliary Relay Kit will be necessary if the Digital is used to control
the main circulation pump.
This mode adds to the Purifier mode by using an Acid feed pump that is user programmed for manual feed of diluted muriatic
acid. The Acid Feed Pump and Tank System come with AutoPilot and Stenner factory components. If the Stenner factory
components are used for the installation, follow their installation instructions. Otherwise, follow the instructions in this manual.
Total Control Mode - Pool Chemistry Controller (Automated purifier and pH control)
Note: Option #75001 Pool Chemistry Controller and the pH Control System must both be installed with the #75003 Digital
Controller for this mode to function.
These options activate the Total Control mode in which the purifier (ORP – defined below) and pH levels are monitored (using
sensors) and controlled automatically, to maintain proper levels. The system automatically enters the Total Control configuration
if it is able to communicate with the Pool Chemistry Controller. The system will display "Error purify off, Error acid off, Check
OpEC" if it is not able to communicate with the Pool Chemistry Controller. OpEC is the acronym for “O
RP pH Electronic
C
ontroller” and is the electronic control logic of the Pool Chemistry Controller. Under normal operating mode, the Total Control
display cycles between the “ORP” screen, the “pH” screen, and the “Salt level” screen.
Total Control Protection
The Total Control system does not generate chlorine or dispense acid if:
• A one-speed or two speed pump is not running,
• Flow (at the Manifold Tri-sensor or Flow Cell flow switch) is not detected,
• Salt is below 2000 ppm,
• Communications with the #75001 Pool Chemistry Controller is lost,
• A sensor error is detected,
• An overfeed condition is detected (if set to detect pH or ORP overfeed),
• An extended period of high pH condition is detected.
Also:
• The Total Control system does not dispense acid until after flow has been detected a minimum of three (3) minutes
after activation.
• The Total Control system does not generate chlorine or dispense acid one (1) minute prior to the Pump Program “Off”
time, when programmed for a One speed pump.
ORP (Oxidation Reduction Potential - measured in millivolts, mV)
ORP is a measurement of the amount of active oxidizer (chlorine) in the water. This system controls ORP by generating chlorine
when the ORP measurement falls below a user programmable set point, which should correspond with the desired free chlorine
level. A one-minute timer prevents the chlorine generation circuit from cycling on/off unless an error condition exists.
The first line of the ORP screen displays the measured ORP, followed by the ORP set point in parenthesi s (as show n b el ow ). The
ORP screen contains the text “On” only if chlorine is being generated. The ORP display range is 200 to 900mV.
The second line of the ORP screen indicates if the ORP is high or low, relative to the set point. If the measured ORP is equal to
the set point, a block █ with no text is displayed. If the measurement falls below the set point, the ▼ and Low are displayed and
chlorine is generated. If the measurement exceeds the set point, the ▲ and High are displayed and no chlorine is generated.
pH
The system controls pH by dispensing diluted mixture of water and muriatic acid (4:1 ratio recommended) when the pH rises
above a user programmable set po int, which should correspond with the desired pH leve l. To avoid overdosing, the system
dispenses acid in low incremen ts based on the difference between the set point and the measured pH.
The first line of the pH screen displays the measured pH, followed by the pH set point in parenthesis (as shown below). The pH
screen contains the text “On” only if acid is being dispensed. The pH display range is 4.00 to 9.90.
The second line of the pH screen indicates if the pH is high or low, relative to the set point. If the measured pH is equal to the set
point, a block █ with no text is displayed. If the measurement falls below the set point, the ▼ and Low are displayed and no acid
is fed. If the measurement exceeds the set point, the ▲ and High are displayed and acid is fed until set point is reached.
pH 4.00(7.50)
█▼▼▼▼▼▼▼ Low
pH 7.50(7.50)
█
pH 9.90(7.50) On
High ▲▲▲▲▲▲▲▲█
ORP 200(650)On.
█▼▼▼▼▼▼▼ Low
ORP 650(650)
█
ORP 900(650)
High ▲▲▲▲▲▲▲▲█