Smart pH 10
Smart pH
Water Chemistry Controller
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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