Pentair Swimming Pool Smart pH User Manual

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11830 Kemper Road  
Auburn, CA 95603  
1-800-273-4667 • 530-823-9898  
Fax: 530-823-9899  
 
1.1 IMPORTANT SAFETY INFORMATION  
PLEASE READ THIS USER MANUAL completely before installing or operating the equipment. The Smart  
pHTM is a Class 1 product for protection against electric shock and a Type 1 product with regards to disconnection of  
the control circuits.  
Observe the following safety precautions:  
Do not permit anyone untrained or under the age of 18 to use this product.  
Unit must be properly connected to earth ground.  
Never apply power when front panel is not secured in the closed position.  
Never service unit with power applied, always turn OFF main circuit breaker to unit and all  
equipment when servicing.  
Touching the controller’s internal parts could result in injury and or damage to the controller. In case of a  
malfunction, only a qualified technician should repair the controller.  
Risk of Electric Shock. Connect only to a grounding type receptacle protected by a ground-fault circuit  
interrupter (GFCI).  
Do not bury cord. Route cord to eliminate abuse from heater exhaust, lawn mowers, hedge  
trimmers, and other equipment.  
Be careful not to damage any of the insulation on wires or the power cord. Should the cord be damaged  
return it to your dealer for a replacement. Continued use could result in fire or electric shock.  
To reduce the risk of electric shock, do not use an extension cord to connect unit to electric supply;  
provide a properly located GFCI.  
Never remove or install any cables between the circuit cards when power is applied, damage to the  
components may occur.  
!
WARNING  
CHEMICAL BURN HAZARD - Make sure pumps are OFF before drilling into pipes. Securely fasten all  
electrical, water and chemical lines. Locate chemical feed pumps and chemical storage tanks in a safe and secure area.  
Never turn chemical feed pumps ON when any valves are closed. The feed lines can blow off and spray full strength  
chemicals causeing damage to property and cause serious injury or death.  
WARRANTY  
Acu-Trol, Inc. warrants the Smart pHTM to be free from defects in manufacturing and workmanship for a period of  
ONE (1) YEAR from the date of manufacture for the electronic module. All sensors and flow cells have a ONE (1)  
YEAR from the date of manufacture. Other equipment is covered by the individual manufacturer’s own warranty.  
During the warranty period, any defective parts will be repaired or replaced when necessary by Acu-Trol, Inc.  
This warranty does not cover: (a) the buyers’ labor or any servicing fees related to replacement of the Product; (b)  
damage resulting from the use of this Product in other than its normal manner; (c) damage from misuse, accident or  
neglect; (d) damage from improper testing, operation, or installation; (e) not operating the Product on a dedicated  
(separate) circuit or under conditions other than those recommended or at voltages or amperages other than the  
voltage or amperage indicated on the Product; and (f) acts of Mother Nature (i.e. lightning, electrical storms, floods,  
etc.). In addition, attempting to service or modify the Product will render this Warranty Void. Defective parts should  
be returned immediately to the local Acu-Trol dealer, any parts returned to the factory require a return of material  
authorization code to subsequently generate an RMA (Return Material Authorization form). An Acu-Trol Technician  
will analyze the returned part and determine the cause of failure and process accordingly.  
WARRANTY CARD MUST BE COMPLETED AND RETURNED AT ONCE TO BE KEPT ON FILE  
3
Smart pH  
 
TM  
1.4 SMART PH OVERVIEW  
SUMMARY: The Smart pH is a microprocessor based, modular automation system capable of  
continuous local monitoring and control of the pH water chemistry for pool and spa  
applications. The Smart pH will maintain the pH levels (either increasing pH using base  
or decreasing pH using acid) of your water system automatically. The Smart pH will  
only increase or decrease the pH. The Smart pH is recommended for use with a  
chlorine generator or an erosion type feeder. You can also use the Smart pH when hand  
feeding liquid chlorine (base) or muratic acid as the chlorine will increase the pH and  
the acid will decrease the pH. The Smart pH can also control CO2 gas systems with the  
same efficiency as an acid feed controller. (For specific information on installation refer  
to documentation supplied with CO2 chemical feeder).  
RELAY:  
SENSORS:  
The Smart pH has one relay module to control the pH levels.  
The Smart pH can measure inputs from one pH sensor.  
VOLTAGE: The Smart pH can only work on an input voltage of 110 VAC.  
CHAPTER 2,  
INSTALLATION  
2.1 PREPARATION  
Receipt Inspection: Upon receiving the controller from shipping, check the carton carefully. Report any dam-  
aged items directly to the shipping company. Examine the package content list below and verify that all items are  
present. Please contact your local Acu-Trol dealer if any items are missing or have been damaged. Use care when  
unpacking equipment to avoid damage or loss of small parts.  
2.2 PACKAGE CONTENTS  
1.  
2.  
3.  
4.  
5.  
Smart pH Controller  
Mounting Hardware  
pH Sensor "T" Assembly  
pH Sensor  
Flow Switch Assembly  
Smart  
ter Chemistry Cpo H  
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5
Smart pH  
4
 
INSTALLATION SUMMARY  
1.  
2.  
3.  
4.  
Identify new and existing equipment to be connected.  
All controlled equipment must be 110 VAC (see Section 2.5.2)  
Mount the Smart pH away from direct sunlight and on a flat vertical surface.  
Connect the supply voltage with main breaker off (must be a separate dedicated circuit GFCI).  
!
CAUTION  
Keep the Smart pH out of direct sunlight or inside a room if possible.  
MOUNTING THE SMART PHTM  
Select a location for mounting the Smart pH that will meet the following recommendations.  
1.  
2.  
At least ten (10) feet from open water.  
Close enough for the supplied power cord (6') to reach the supply voltage. The controller will not operate  
properly without a solid earth ground connection.  
3.  
4.  
Supply power must be routed to the Smart pH in accordance with all national, state, and local codes.  
Keep the Smart pH out of direct sunlight and inside a room if possible, a shade screen should be  
used for outdoor installations.  
5.  
6.  
7.  
8.  
9.  
The installation surface must be solid and vertical. Do not mount the controller in a horizontal position.  
Maintain adequate clearance for opening the enclosure.  
The environment should be free of chemical fumes and excessive heat.  
Mount as far as possible from sources of electrical interference.  
Hold the controller against the mounting surface with a closed lid and mark the location of the mounting  
brackets on the wall. Prepare holes as necessary and secure controller using hardware provided.  
10. Make sure the controller box is not distorted by an uneven mounting surface.  
1.85"  
3.30"  
8.3"  
Figure 1. Mounting Dimensions  
WARNING  
Proper and safe operation requires an earth ground connection. All electrical work must be per-  
formed by a licensed electrican and must conform to all national, state, and local codes.  
5
Smart pH  
 
ELECTRICAL SPECIFICATIONS  
The following electrical specifications tabled below must not be exceeded.  
ITEM  
DESCRIPTION  
LIMIT  
Input Voltage  
Input Current  
Input current  
Temperature  
Maximum Input AC Voltage  
Maximum Input Current  
125 VAC  
5 AMPS (AC)  
5 AMPS (AC)  
30° - 110° F  
Maximum Current for Single Relay  
Minimum/Maximum Operating Temperature  
Standby Current Current with Relay OFF, LED ON  
Current with Relay OFF, LED OFF  
50 mA (AC) Typical  
30 mA (AC) Typical  
Sensor Range  
pH  
4.22 - 9.78  
CONNECTING THE 110VAC POWER SUPPLY  
For cord connected installations wait to plug the cord in as the last step in the installation. For hard-wired instal-  
lations make sure the circuit breaker is off and turn it on as the last step in the installation. Acu-Trol recommends  
having a licensed electrician perform the installation to ensure all national, state, and local codes are met.  
RELAY BOARD CONTROL VOLTAGE SETTING  
The relay comes set from the factory for 110 VAC control voltage. Changing the jumper on the relay will allow  
for different control voltages of 24V or for a Dry Contact Switch (see Fig. 2)  
Factory Set-  
ting  
24 VAC  
Dry Contact  
Switch  
Figure 2. Relay Jumper Settings  
CHEMICAL FEED PUMP LOCATION  
If the feed pump has not been previously installed, follow the instructions included with the chemical feed  
pump. Some chemical feed pumps include a power cord and are ready to plug in. If a "pigtail" has been ordered with  
the Smart pH, simply plug the pump power cord into the "pigtail". If a "pigtail" is not installed the power cord from  
the pump will need to be modified. The list below provides overall installation recommendations:  
1.  
2.  
3.  
4.  
Mount at least 10 feet from open water.  
Install the pump below the level of the Smart pH and away from any other equipment or systems.  
Install close enough to the Smart pH for the feed pump power cords to reach.  
If a plug is already on the pump, simply plug in the pump to the Smart pH "pigtail". If  
pigtails are not installed, you will need to hardwire the pump to the Smart pH relay board.  
Route the supply power wires to the Smart pH through the lower fitting and attach to the appropriate  
relay terminals on the relay circuit board (see Section 5, "Wiring Diagram). If the wire ends were striped  
and not ferruled make sure that no frays of wire are out of the connector as this may lead to a short.  
PVC conduit can also be used (in accordance with all national, state, and local codes).  
When installing metal conduit into the controller, a ground LUG should be used (in accordance with all  
national, state, and local codes) to connect the conduit to the relay board ground.  
5.  
6.  
7.  
Smart pH  
6
 
PLUMBING INSTALLATION  
Install the flow sensor and the pH sensor using the following steps:  
1.  
Turn off all power to the system, close all isolation valves and then release any air from the  
system by turning the release valve on top of the system filter.  
2.  
The flow sensor and pH sensor "T's" must be installed after the filter but, before the chemical injector  
Install the flow sensor before the pH sensor. The flow sensor "T" has an arrow on it. The arrow  
indicates water flow direction.  
3.  
Remove the protective cap from the pH sensor. Using the "T" with the sensor adapter, install the sensor  
into the adapter. Push the sensor into the adapter until it hits the bottom of the "T"  
(see Fig 5). Tighten the sensor adapter (hand tighten only).  
4.  
5.  
Allow for sufficient drying time of the PVC glue (minimum recommendation of 24 hrs).  
Close the air release valve on top of the filter. Open any isolation valves and check the system for leaks.  
®
cu-Trol  
Smart pH  
PROGRAMMABLE CONTROLLERS  
Water Chemistry Controller  
Set Point  
pH  
POWER  
pH  
pH  
Turn “Set Point” knob to the  
far left or right to trigger pH  
reading function  
CAUTION  
(see manual for details)  
The flow switch and the pH sen-  
sor must be installed before the  
chemical injectors. Installing the  
flow switch and pH sensor after the  
chemical injectors will cause the  
Smart pH to give false readings.  
CHEMICAL  
FEED  
BALANCED  
HIGH  
-
LOW  
CHEMICAL  
FEEDER PUMP  
Disconnect power source before servicing unit  
SMART pH  
FILTER  
PUMP  
HEATER  
Figure 3. Plumbing Installation Diagram  
pH  
Sensor  
PUSH SENSOR  
INTO "T" UNTIL  
IT STOPS  
WATER  
FLOW  
FLOW SENSOR "T" MUST BE  
INSTALLED IN THIS DIRECTION  
PVC "T"  
Figure 4. Flow Sensor Installation  
Figure 5. pH Sensor Installation  
7
Smart pH  
 
SENSOR WIRING  
pH SENSOR  
Open front panel by removing the top two screws completely and unscrewing the lower two screws about half  
way. The front cover will now fold down like a shelf for easy access to the wiring connections and dipswitches.  
Route the sensor wires through the small strain relief into the Smart pH and to the appropriate connectors  
(green terminal bar) in the Smart pH (see Fig. 6).  
The polarity (+ and -) of the pH sensor must be observed. The pH sensor wire (+) is clear, and the pH sensor  
wire (-) is green. Leave excess wire outside the controller enclosure. Do not stuff excess wire inside the  
controller as this may cause excess strain on sensor and relay connections. Do not cut the sensor wire. If the  
cable is longer than needed, it should be coiled neatly and attached under the controller enclosure.  
WARNING  
Sensors are shipped with a protective cap covering the electrode tip to protect the sensing element. Sensors should be  
kept in the protective cap until ready for installation, if the cotton in the protective cap becomes dry, wet it with tap  
water. During shipment, air bubbles may have entered the electrode, carefully shake the electrode downward (like a  
thermometer) to dispel the air from the sensing elements inside the electrode. Before using the sensor, remove the cap.  
INSIDE  
THE  
FLOW  
pH  
Figure 6. Smart pH Sensor and Flow Switch Wiring  
FLOW SENSOR  
The flow sensor is used to indicate that there is flow and that it is OK to feed chemicals . The Smart pH will not  
allow chemicals to feed if the water flow is not on and detected.  
Route the sensor wires through the small strain relief into the Smart pH and to the appropriate connectors  
(green terminal bar) in the Smart pH (see Fig. 5).  
Do not stuff excess wire inside the controller as this may cause excess strain on sensor and relay connections.  
Do not cut the sensor wires.  
If the cable is longer than needed, it should be coiled neatly and attached under the controller enclosure.  
Smart pH  
8
 
2.9 SETTING THE DIP SWITCHES  
1. Set the switches on the DIP Switch as to your requirements. (See fig 7.)  
SWITCH  
Up  
Acid Feed  
No Overfeed Limit 1 hr. Overfeed Limit  
Down  
Base Feed  
1
2
3
4
OPEN  
Do not change  
Do not change  
6
5
Proportional Off  
Proportional On, 5%  
of Set Point  
4
3
2
1
5
6
1 Min. Cycle Time 3 Min. Cycle Time  
5% of the Cycle  
Time.  
20% of the Cycle  
Time.  
DIP SWITCHES IN THE DOWN POSITION  
(FACTORY SETTING)  
Figure 7. DIP Switch Settings  
Descriptions:  
Acid Feed:  
OR  
DIP Switch 1 (up) will turn on the chemical feeder when the "High" LED side is on.  
Base Feed:  
Overfeed:  
DIP Switch 1 (down) will turn on the chemical feeder when the "Low" LED side is on.  
The unit will enter overfeed mode when the feed time has exceeded the setting of DIP  
Switch 2. When in overfeed mode, the Low, Neutral, and High LED’s will flash.  
Proportional: DIP Switch 4 will set a variable time length calculated to turn the chemical feeders on  
and off so that the pH level does not overshoot.  
Cycle Time:  
Use DIP Switch 5 to have a one (1) minute cycle time (up) or a three (3) minute cycle  
time. The On Time + Off Time = Cycle Time.  
On time:  
Dip Switch 6 determines whether the chemical feeder can be on for 5% of the On Time or  
whether it is 20% of the On Time (This can help the unit from overfeeding on small bodies of  
water or spas).  
FINISHING AND TESTING  
Once the controller system has been installed with applicable sensors and modules, allow the Smart pH system  
to acclimate to the body of water for 24 hours.  
1. After all wire connections are complete, close the panel and tighten the enclosure screws.  
2. Turn on the main breaker and turn on the Smart pH.  
3. Verify that the controller is active and that LED’s are working.  
OPERATIONS  
SMART PHTM BASIC OPERATION  
When the pH level is .2 or greater above the set point the HIGH LED will be on.  
When the pH level is .2 or greater below the set point the LOW LED will be on  
When the pH level is .05 to .2 above the set point the HIGH LED and the BALANCED LED will be on.  
When the pH level is between +/- .05 from the set point the BALANCED LED will be on.  
When the pH level is .05 to .2 below the set point the LOW LED and BALANCED LED will be on.  
9
Smart pH  
 
POWER Indicator  
Indicates when power is  
provided to the unit  
®
cu-Trol  
Smart pH  
PROGRAMMABLE CONTROLLERS  
Water Chemistry Controller  
Set Point  
pH  
POWER  
CHEMICAL FEED  
Indicator  
lights green, indicating  
that chemicals are  
flowing  
pH  
pH  
Turn “Set Point” knob to the  
far left or right to trigger pH  
reading function  
HIGH Indicator  
lights red, indicating  
system pH is high  
(see manual for details)  
CHEMICAL  
FEED  
BALANCED  
LOW  
HIGH  
BALANCED Indicator  
lights green, indicating  
set point has been  
reached  
LOW Indicator  
lights red, indicating  
pHis low  
-
Disconnect power source before servicing unit  
Figure 6. Smart pH Basic Operation  
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 Check chemical tank and  
even after turning control make sure it is not empty  
down  
Check power connection  
between the Smart pH and  
the chemical controller  
pH Sensor  
pH Sensor  
Flow Switch  
Reading never matching  
hand check  
Clean sensor, check ground Check total alkalinity  
on input power  
Readings never matching Short (+) (-) on sensor,  
hand check  
Sensor may need to be  
cleaned  
pH = 7.0. Remove sensor  
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  
Smart pH  
10  
 
DIAGRAMS  
120VAC SUPPLY POWER WIRING  
PIGTAIL TO  
CHEMICAL  
FEEDER PUMP  
(120VAC)  
TO  
120VAC  
SUPPLY  
POWER  
11  
Smart pH  
 
EXPLODED VIEW  
5
2
3
6
4
(4)  
4A  
PARTS LIST  
Dia. #  
Description  
Part #  
1
2
3
4
4A  
4B  
5
Knob with O-Ring...............................................................................................754000030  
Top Half Replacement, Complete .......................................................................714000030  
Relay Module......................................................................................................714000050  
Bottom Half Replacement, Complete .................................................................714000040  
Cables, (1) Power Cable, 6' and (1) Pigtail, blue, 6"...........................................754000020  
Mounting Feet (4) with Screws (4) .....................................................................715000000  
Sensor, pH ...........................................................................................................744000020  
Sensor, Flow Switch............................................................................................744000030  
6
Smart pH  
12  
 
Acu-Trol, Inc.  
11830 Kemper Road  
Auburn, CA 95603  
400000360 REV. A 6/11/2007  
For Technical Support Call 800-273-  
 

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