Pentair Smart pH, Installation Manual

Smart pH 

10

Smart pH

Water Chemistry Controller

 INT

ELLIGENC

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IN

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ID

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ACU-TROL

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ID

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www.acu-trol.com     Made in USA     110 VAC,  5A

Disconnect power source before servicing unit

Turn “Set Point” knob to the 

far left or right to trigger pH

reading function

(see manual for details)

POWER

HIGH

BALANCED

LOW

CHEMICAL 

FEED

pH

pH

pH

Set Point

cu-Trol

PROGRAMMABLE   CONTROLLERS

®

Figure 6. Smart pH Basic Operation 

POWER Indicator

Indicates when power is 

provided to the unit

CHEMICAL FEED 

Indicator

lights green, indicating 

that chemicals are 

flowing

LOW Indicator

lights red, indicating

pH

is low

HIGH Indicator

lights red, indicating 

system pH is high

BALANCED Indicator

lights green, indicating

set point has been 

reached

STARTUP

SETTING pH

Measure the pH using a standard test kit. If not already done, close up the front cover of the Smart pH. When the 

knob (potentiometer) is turned all the way to the right or left the units Low, Balanced, and High LED’s will begin to 

flash simultaneously. Count the number of flashes on each LED. This will be the reading of the pH probe being moni-

tored. For example, for a pH reading of 6.23 the Low LED will flash 6 times, the Neutral LED will flash 2 times and 

the High LED will flash 3 times. The LED’s will all go off for approximately 2 seconds and then restart again until the 

knob is moved back into the set point range. Chemical feeding will stop when the Smart pH detects there is no flow. 

See Chapter 6, "Setup Check Out Sheets" for help with start up.

 The Smart pH is not an absolute measuring de-

vice. If the pH of the system is too high turn the knob to the left and monitor over some period of time. If the pH is too 

low turn the knob to the right and then monitor over time. Monitor the ph readings by using the hand check method 

and adjust the Smart pH to achieve the desired reading. Normally the probes should read +/- .5 of the hand check, if 

out of this range the probe may need to be cleaned (See "Cleaning Probe", Section 4.2).

TROUBLESHOOTING 

PART

PROBLEM

SOLUTION #1

SOLUTION #2

pH Levels

High pH won't come down 

even after turning control 

down

Check chemical tank and 

make sure it is not empty

Check power connection 

between the Smart pH and 

the chemical controller

pH Sensor

Reading never matching 

hand check

Clean sensor, check ground 

on input power

Check total alkalinity

pH Sensor

Readings never matching 

hand check

Short (+) (-) on sensor, 

pH = 7.0. Remove sensor

Sensor may need to be 

cleaned

Flow Switch

Not working

Check continuity when flow 

is present

LED's Flashing Overfeed alarm ON

1 hour or none only

Make sure feeder is working 

properly