AK110 CHEMICAL CONTROLLER ILLUSTRATED PARTS LIST ..................................................130
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IMPORTANT WARNING AND SAFETY INSTRUCTIONS
SERIOUS BODILY INJURY OR DEATH CAN RESULT IF THIS PRODUCT IS NOT INSTALLED
AND USED CORRECTLY.
INSTALLERS, POOL OPERATORS AND POOL OWNERS MUST READ THESE WARNINGS AND
ALL INSTRUCTIONS BEFORE USING THIS PRODUCT.
Most states and local codes regulate the construction, installation, and operation of
public pools and spas, and the construction of residential pools and spas. It is important
to comply with these codes, many of which directly regulate the installation and use
of this product. Consult your local building and health codes for more information.
IMPORTANT NOTICE - Attention Installer: This Installation and User’s Guide
(“Guide”) contains important information about the installation, operation and safe use
of this product. This Guide should be given to the owner and/or operator of this product.
DO NOT INSTALL THE AK110 CHEMICAL CONTROLLER WHERE IT CAN BE READILY
ACCESSIBLE T O THE PUBLIC.
Before installing this product, read and follow all warning notices and instructions in this
Guide. Failure to follow warnings and instructions can result in severe injury, death, or
property damage. Call (800) 831-7133 for additional free copies of these instructions.
RISK OF ELECTRICAL SHOCK OR ELECTROCUTION:
BEFORE WORKING ON THE AK110 CHEMICAL CONTROLLER: Always disconnect power to the
AK110 controller at the circuit breaker before servicing. Failure to do so could
result in death or serious injury to service person, pool users or others due to electric
shock.
BE SURE TO DISCONNECT ALL SUPPLY CONNECTIONS BEFORE SERVICING.
This product must be installed by a licensed or certified electrician or a qualified pool professional in accordance
with the National Electrical Code (NEC), NFPA 70 or the Canadian Electrical Code (CEC), CSA C22.2. All
applicable local installation codes and ordinances must also be adhered to. Improper installation will create an
electrical hazard which could result in death or serious injury to pool users, installers or others due to electrical
shock, and may also cause damage to property.
BEFORE USING YOUR POOL, SPA OR HOT TUB, CHECK THE
pH AND SANITIZER LEVELS OF THE WATER
.
Do not permit children to operate this equipment.
When mixing acid with water, ALWAYS ADD ACID TO WATER. NEVER ADD WATER TO ACID.
When adding any chemical to the pool/spa, be sure to follow the manufacturer’s instructions
thoroughly.
DO NOT MIX SODIUM HYPOCHLORITE AND MURATIC ACID
Risk of electrical shock. Connect AK110 Chemical Controller to a ground-fault interrupter-circuit
(GFCI). Contact a qualified electrician if you cannot verify that the receptacle is protected by a
GFCI.
IF “CLEAR OVERFEED LIMIT” SETTING IS SET TO 24 HOURS, DO NOT SET “FEED TIME”
GREATER THAN 20 HOURS AS THIS WILL VOID NSF CERTIFICATION.
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IMPORTANT WARNING AND SAFETY INSTRUCTIONS
WARNING CHEMICAL BURN HAZARD: Make sure all pumps are switched off at the main circuit
breakers at the house before drilling into any pipes. Securely fasten all electrical, water and
chemical lines. Locate chemical feed pumps and chemical storage tanks in a safe and secure
area.
Strictly follow the acid manuf acturers safety and handling protocols including hand, body and eye protection
when transferring or handling acid. Safety precautions should be used when handling Muriatic acid to
control pH water lev els. Muriatic acid can cause serious body injury and damage pool equipment. Extra
care must be taken when installing, maintaining and operating acid pump feed systems. Acid is dangerous to
handle and should be properly contained, transported, poured, stored, and dispensed.
Check the pH and sanitizer levels of the water before use.
Periodically use an independent pH and Chlorine test kit to verify that pH and chlorine is at a
safe level. If the pH and Oxidation Reduction Potential (ORP) or Flow Cell sensors are broken,
depleted or dirty with oils, lotions, or other contaminants, they can report inaccurate results to the
system causing incorrect water chemistry, which could harm people or equipment.
Check the main status display each day to ensure there are no Alarm messages.
See “Troubleshooting” section for more information.installing, maintaining and operating acid
pump feed systems. Acid is dangerous to handle and should be properly contained, transported,
poured, stored, and dispensed.
GENERAL WARNINGS AND SAFETY PRECATIONS
PLEASE READ THIS USER MANUAL completely before installing or operating the equipment. The Controller Pool and Spa Chemical Controller is a Class 1 product for protection against electric shock and a Type 1 product with regards to disconnection of the control circuits.
Be sure to observe the following safety precautions:
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.
CHEMICAL HAZARD CONDITION
DO NOT TURN CHEMICAL FEED PUMPS ON WHEN BOTH FLOW
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!
WARNING
CELL VALVES ARE CLOSED.
AK110 Pool and Spa Chemical Controller Overview
The AK110PS Pool and Spa Chemical Controller ("Controller") is a microprocessor based modular automation system
capable of continuous local or remote monitoring and control of water chemistry for pool and spa applications. The
Controller will maintain the pH and sanitizer levels of your water system automatically. Customized applications are
MODULAR: The Controller is designed to grow with the needs of the customer. There are optional modules that can
be installed as the need arises without having to remove the Controller from the wall.
INTERFACE: The Controller uses a built-in keypad with 16 buttons, and an easy to read 80 character liquid crystal
The Controller features easy to use display menus for on screen navigation.
MEMORY:
In case of power loss, all set-points and programming are retained in nonvolatile memory. These values will
be protected for a minimum ten (10) years without having power applied.
DATA RECORDING: The Controller has the ability to record data at 2 hour time intervals. Over 1 month of data can be
recorded before filling up the memory. When the memory is full the new data will overwrite the oldest data.
RELAYS: The Controller can control up to three (3) relays. There are various types of relay configurations available to
different types of load requirements.
DISPLAYS: The Controller can display measurements, relay ON/OFF states, length of time that relays have been on
and the alarm status.
SENSORS: The Controller can measure readings and control based on inputs from the following sensors: temperature,
digital flow,
pH, ORP, and AKColor PPM.
VOLTAGE: The Controller includes a switch to select the input voltage of 110 or 220 VAC (single or dual phase).
HEALTH: The Controller can be configured to maintain the bacteriological and physiological requirements of state and
local health departments. In addition, the Controller has the capability to be configured such that equipment can be
protected from the effects of improper water balance.
internal 56K modem and a phone line, or a wireless modem and an internet connection. This feature allows a user
remote access to Controller operations using an MS Windows Based PC and the Acu-Com Software. The Acu-Com
Software is a full featured software package that allows the operator to download recorded data, monitor system
inputs in real time and provides a graphing option that allows for detailed analysis of water system parameters and
performance. In addition, AcuManage II, an online database management system will display data from any internet
enabled Controller.
REMOTE PAGING: With the optional modem installed, the Controller can be programmed to dial out to electronic
paging systems for notifying operators of an alarm condition.
REMOTE EMAILING: With the optional wireless modem installed, the Controller can be programmed to send an email
notifying operators of an alarm condition.
SECURITY: The Controller provides two level security protection based on passwords for both local and remote
interaction.
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SECTION 2
INSTALLATION
Installation Preparation
Inspection: Upon receiving the Controller check the carton carefully.
present. Contact Customer Support (800) 831.7133 if any items are missing or have been damaged. Use care when
unpacking equipment to avoid damage or loss of small parts. Verify that the fuses are the correct values and that the
voltage select switch is in the proper position.
Installation Summary
The following steps are required to install the Controller:
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Mounting Instructions
!
!
Select a location for mounting the Controller, meeting the following recommendations:
1. Mount at least ten (10) feet from open water.
2. Mount close enough for the supplied power cord to reach the supply voltage. The Controller will not operate
properly without a solid earth ground connection.
WARNING
Proper and safe operation requires an earth ground connection.
3. Supply power must be routed to the Controller in accordance with the applicable codes in the area; the
supplied power cord is not code in some areas.
4. The installation surface must be solid and vertical. Do not mount the Controller in a horizontal position.
WARNING
Keep the Controller out of direct sunlight, inside a room if possible.
Direct sunlight on the Controller will result in inaccurate readings.
A shade screen should be used for outdoor installations.
5. Maintain adequate clearance for opening the front panel enclosure.
If the Controller is connected to 220 VAC the voltage selection switch must be changed
to 220 VAC before connecting power to the unit or damage will occur.
Note: It is not possible to power the AK110 Chemical Controller with 110 VAC,
and control 220 VAC loads or vise versa.
Connecting Power
For cord connected installations wait to plug the cord in as the last step in the installation. For hard-wired installations
make sure the circuit breaker is off and turn it on as the last step in the installation. Have a licensed electrician perform
the installation to ensure the local codes are met.
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Electrical Loads
!
The Controller with revision F and greater relay board has the capability of utilizing up to three (3) modular relay boards
that can be purchased in a number of configurations. The Controller is shipped from the factory with three (3) 110 VAC
Normally Open modules installed (Part# 724000050). Listed below are the different types of relay modules that can
be purchased and their function. The correct ones must be ordered based on the load requirements. Check with your
distributor for the proper relay modules for your application.
Factory Setting
for input power
115 VAC
Setting for input
power 24VAC
Dry (Switch)
White = No Jumper
Grey = Jumper
Relay Modules
Part # FUNCTION
724000050 For control of 110 VAC Normally Open Circuits
(most applications will use this model).
724000060 For control of 110 VAC Normally Closed Circuits.
724000440 For control of 110 VAC Single Pole, Double Throw Circuits, with common white and no ground.
The wiring on each board may be different depending on the model that you purchase. Look on the board, check with
your distributor or call Pentair Customer Support at 800-831-7133 with any questions.
WARNING
Do not change relay modules when power is applied.
This type of damage is not covered in the warranty.
Do not connect any load not rated for the supply voltage to any of these relays.
TOTAL COMBINED LOADS MUST BE LESS THAN FIVE (5) AMPS
FOR ALL THREE RELAYS.
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RELAY BOARD
115
Relay 1: Configured for pH control.
Relay 2: Configured for ORP control.
Relay 3: User configured.
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Chemical Feed Pump Location
If unit has not been previously installed, follow the instructions included with the chemical feed pump. Some loads
include power cords already connected to the load and are ready to plug in. If “pigtails” have been ordered with the
Controller simply plug the power cord into the appropriate "pigtail". If "pigtails" are not installed the power cord from
the pump will need to be modified. The list below provides installation recommendations:
1. Mount at least 10 feet from open water.
2. Install the pump below the level of the Controller and away from any other equipment or systems.
This is to reduce any damage to other equipment should the pump leak.
3. Install close enough to the Controller for the feed pump power cords to reach.
4. If "pigtails" are included simply plug in the pumps to the appropriate "pigtail". If pigtails are not installed,
cut the electric plugs from the feed pumps and strip and ferrule the ends.
5. Route the power cords to the Controller through the lower fittings and attach to the appropriate relay
terminals on the relay circuit board. 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.
7. When installing metal conduit into the Controller, a ground LUG should be used to connect the conduit to
the relay board ground.
Heater Installation
The Controller third relay can control a heater, turning it on and off based on the temperature settings you have
programmed in to the Controller. The heater control portion of the Controller can be used to maintain a constant
temperature or maintain a temperature during operating hours. Even though the Controller is a very accurate and
reliable device, for safety, always use the over-temp device on your heater to prevent overheating.
1. Always install any heater according to the manufacturer's instructions.
2. Mount the Controller at least 10 feet from open water.
3. Install close enough to the Controller for the wiring connections to reach.
4. DO NOT attempt to power the heater with the Controller controller.
5. A heater unit must always be independently powered, either through a separate cord, or through an
6. Always use the over-temp device on the heater to prevent overheating.
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Plumbing Installation
!
WARNING
Be sure to have a licensed plumber perform all plumbing; this is important, as they will
be familiar with all of the codes in the local area.
Follow the instructions that came with the AK1200 flow cell. This section gives the basic principles to be applied for any
specific installation, which are listed as follows:
1. Turn OFF all equipment including the filtration system.
2. Determine a suitable location for the flow cell. Which should be located where water spillage will not
damage surroundings.
3. Securely mount the flow cell.
4. Install the supply and return lines for each flow cell. Drillandtap¼”holesforthe½”exibletubingorhardplumb the flow cell.
A. Locate where the water will be supplied from and returned for each flow cell. The most common
location for the water inlet to the flow cell is after the main filter and the outlet after the heater.
B. If there is no suitable location the cell inlet can be after the main pump and the outlet before the main
pump. This method may cause a suction in the flow cell and damage to the sensors. If any chemicals
10. Check for leaks and verify the flow sensor indicates flow.
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Plumbing Installation
!
WARNING
Do not inject acid directly in to the AK1200 ow cell.
Injecting acid in this way may damage the existing pool equipment.
Pool
Pump
Water
Return
Sample
Test
Supply
Preferred Plumbing Routes
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SECTION 3
HARDWARE
Modules
Modules are the electronic controls and components that make up the Controller.
Each module has a specific function or functions that tell the Controller what information to accept and what
information to display. The modular design of the Controller enables it to interface with many types of modules
including Sensor, Communication, and Relay modules.
Sensor Modules
Sensor modules determine the types of sensors signals the control can recieve. There are three sensor modules
currently available for the Controller.
AK111: pH, ORP, temp and heater control. Calculated PPM can also be displayed (Part# 724000010).
AK112: pH, AKColor(PPM), heater control (Part# 724000380)
The Controller has the ability to work with several types of communication modules. The Controller can communicate
with a PC through an RS232 cable, a standard modem, or a wireless modem.
Wireless Modem: The wireless modem allows the Controller to be accessed over the internet from any PC.
Wireless modems are a perfect solution for installations without phone lines. Please note that the wireless
modem and the standard modem can not be installed in the same Controller.
Relay Modules
The Controller is able to automate nearly any device in your pump room. The Controller uses a relay module to turn
electricity to the device on and off. Each Controller can control up to 3 relay modules. Each relay module can control
one device. Relay modules are available in seven different models. The type of relay module used depends on the
load requirements of the device that is controlled with the relay module. To determine the load requirements, please
consult the instruction manual or the device manufacturer. Any combination of the seven models of relay modules can
CONTACTS: These relays act as a dry contact switch only and have no connection to the input VAC. The relay ratings
are 5A and 250 VAC.
115 VAC Normally Closed: These relays supply the input voltage to the load when the relay is in the “OFF” mode.
Note that both VAC inputs are controlled by the relay. The relay ratings are 5A and 250 VAC.
115 VAC Normally Open: These relays supply the input voltage to the load when the relay is in the “ON” mode. Note
that both VAC inputs are controlled by the relay. The relay ratings are 5A and 250 VAC.
115 VAC SPDT: These relays are hard-wired selectable to be either NO (Normally Open) or NC (Normally Closed)
switching of the input voltage. They are always powered, and the wiring will dictate whether the power flows in the on
or off position. The relay ratings are 5A and 250 VAC. The neutral is common for both NO and NC.
24 VAC Normally Closed: These relays supply 24 VAC to the load when the relay is in the “OFF” mode. Note that both
VAC inputs are controlled by the relay. The relay ratings are 1A and 250 VAC.
24 VAC Normally Open: These relays supply 24 VAC to the load when the relay is in the “ON” mode. Note that both
VAC inputs are controlled by the relay. The relay ratings are 1A and 250 VAC.
24 VAC SPDT: These relays are hard-wired selectable to be either NO (Normally Open) or NC (Normally Closed)
switching of the 24 VAC. They are always powered, and the wiring will dictate whether the power flows in the on or off
position. The relay ratings are 1A and 250 VAC. The neutral is common for both NO and NC.
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SECTION 4
AK1200 FLOW CELL
AK1200 Flow Cell
Remove flow cell from shipping carton and make sure all parts are included with AK1200 flow cell.
1. It is essential that the supply line be at a higher pressure than the discharge line so the water will flow through
the cell at a steady rate in the right direction. Installing a ball valve in the main circulation line may be required
if the pressure is too low.
2. Inlet should be installed after filter and before heater.
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Sensors
!
!
1. pH and ORP sensors must remain wet at all times. Install the sensors into the flow cell,
HAND-TIGHTEN ONLY and save caps for future use and fill flow cell with water.
2. Route the flow switch wires into the Controller through the strain relief and connect to the Controller.
Wire one (either one) to ground and one to the appropriate input switch.
3. Route the chemical sensors into the Controller through the strain relief and connect to the Controller.
The sensor wires are labeled and the PLUS AND MINUS POLARITY MUST BE OBSERVED.
4. Turn the main pump on and open the valves to test for leaks and the free movement of magnet.
Magnet must be all the way up in order to close the flow switch. 1/4 GPM will push the magnet all the
way up.
CAUTION
The ow switch is a dry contact only (no current).
Use with any other brand Controller VOIDS WARRANTY.
WARNING:
Make sure all pumps are OFF before drilling into pipes.
Never turn chemical feed pumps ON when both
ow cell valves are closed.
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SECTION 5
!
SENSORS
The Controller can accept readings from a wide variety of sensors. The sensors the Controller can read depends on
the sensor module installed in the Controller. Each sensor has its own unique circuitry that is connected directly to the
micro-Controller for measurement. Isolation of each sensor ensures more accurate measurements.
The Controller measures the following sensor measurements with the listed characteristics:
pH - Range: 4.22 to 9.78
ORP - Range: 0 to 999 mV
Temperature - Range: 32 to 212 °F
Flow Switch: This input measures if a switch is open or closed.
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 sponge in the boot becomes dry, wet it with pool water.
Before using the sensor remove the cap.
pH and ORP Sensors
pH electrodes sense the acidity of the water and work with any acid or base. The blue bands on the cables identify the
pH sensors. The red bands on the cables identify ORP sensors. Each sensor is also identified on the sensor body. ORP
cable is longer than needed, it should be coiled neatly and attached under the Controller enclosure.
DO NOT CUT THE SENSOR WIRES.
Do not stuff excess wire inside the controller as this may cause excess strain
on sensor and relay connections.
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Calculated PPM
If you have an ORP sensor module you can choose to operate the AK110 in Calculated PPM (Parts Per Million) mode.
When in Calculated PPM mode, the Controller uses a special formula to convert the ORP reading from the sensor in to
Controllers. The AKColor is capable of measuring the amount of free chlorine present in a body of water. The colormetric
method of measuring PPM is superior to other methods because it is much less sensitive to varying water conditions,
including pH and salinity. The information gathered by the AK Color can be used to control chemical feed pumps and
signal alarm conditions. For more information on the AKColor please see Navigation Screen on page 128 or consult your
AKCOLOR installation manual.
Temperature Sensor
The AK10K sensor can be installed to measure/display temperature. The sensor should be installed as close as possible
to where the water comes from the pool. If a temperature probe is installed in the AK1200 flow cell there will be a
temperature variation due to the long tubes and the temperature in the pump room. A common place to install it is in the
small plugged hole in the bottom of the main pump strainer basket.
The sensor uses a special ¼” NPT fitting to hold the stainless steel sensor. A hole should be drilled (7/16”) and tapped
(1/4”) where the water enters the pump room through a fitting to get double the depth to hold the sensor. If installed
outdoors make sure to keep it out of direct sunlight. Route the wires into the Controller through a strain relief and
connect to the temperature input. The red wire goes to T and the black wire to GND.
Flow Sensors
The Controller has the capability of measuring two flow switches in which one or both can be a digital flow sensor.
These inputs are general purpose and can measure any dry contact switch state. This can include flow, pressure,
temperature, digital flow rate and so on.
The typical uses for the flow switches are:
Switch
1: Typically used to indicate flow through the flow cell and it is OK to feed chemicals. If a digital sensor is
used the actual flow rate can be measured and displayed in gallons/liters per hour.
Switch 2: Can be used to measure water level for automatic level control. If a digital sensor is used the actual
flow can be measured and displayed in gallons / liters per hour.
NOTE:
To obtain liters per minute the scale factor must be changed to pulses per liter.
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Sensor Care
!
Contamination of the sensing elements often results in slow response and inaccurate readings. Clean the elements by
the following procedures:
pH and ORP Sensors
1. Wash electrode tip in a liquid detergent and water. Carefully use a soft bristled toothbrush to wash the
electrode tip and white sensing ring.
2. Rinse after cleaning. To install, place in flow cell according to the diagram and hand tighten.
3. Make sure the O-ring is installed on sensor.
4. If the cable is longer than needed, it should be coiled neatly and attached under the cabinet.
pH Sensors Only
5. Attempt to clean the sensor with liquid detergent first.
6. If this is not successful, swirl the tip of the sensor in a 5 parts water and 1 part muriatic acid solution
for 10 - 20 seconds.
7. Rinse again and reinstall.
WARNING
Do not rub hard the glass element in the sensor or use sand paper or
other polishing material to clean.
HANDLE ELECTRODE CAREFULLY
Sensors contain external and internal glass elements. Do not drop or otherwise
subject the sensor to vibration, physical impact, or freezing conditions.
ANY TYPE OF BREAKAGE IS NOT COVERED UNDER WARRANTY.
1. After all wire connections are complete close the panel and tighten the enclosure.
2. Plug in the Controller and turn on the main breaker. Switch the ON/Off switch to ON.
Up is ON and down is OFF.
3. Verify that the display is active and displays various introduction/initialization screens.
4. SENSORS: The first screen displays the sensor readings, verify that they are connected properly.
Example: pH is within 0.5. This is to verify that the pH is connected to the pH input and
the ORP is connected to the ORP input.
5. FLOW: Verify that the flow switch indicates on (S1ON) and the green flow LED is on. Close the valve
in the flow cell to stop the flow and verify that the Controller indicates no flow (S1OFF) and the flow
LED is off.
6. LOADS: Leave the valve closed (S1OFF) for this part of the test so that the relay programs will keep
relays "automatically" off. Press the Right button 1 time to R1 (ph) OFF and press ENTER to "manually"
turn on the load, verify that the correct load turns on and press enter to turn it off.
up or down the screens and the RIGHT and LEFT will move arrows to the RIGHT and LEFT on the screen
See page 48 for more detailed navigation instructions.
WARNING
Press 16 Button touch pad with nger pads only. A sharp object such as a
pen or tool will damage button pads.
MAKING CHANGES
To change a parameter move the cursor to the parameter and press the ENTER key. The Controller will then open the
value entry screen for that parameter. The Controller navigation system uses the following considerations:
1. Use the right and left arrows to change to a different digit to enter.
2. Press a number on the keypad to change a digit.
3. Press the left button to add a digit and make the number bigger.
4. Press the ENTERbutton to save the change.
NOTE
Changes must be saved by pressing the nal ENTER.
If ENTER is not pressed as the last step the changes with not be saved.
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Start Up
The following steps need to be performed to properly setup the Controller:
3. Set up the timing parameters based on the size of the water and chemical feeding system.
4. If the AKRTC (Real Time Clock) module is installed set the time, date and weekday. (Part # 724000280)
5. Set the overfeed time limits in programming.
6. Return as needed to recalibrate any changes to the settings
7. If the AK540 modem (Part# 725000010) is installed, then set the number
of rings to answer on and setup the paging conditions.
Initializing the AK110PS Pool and Spa Chemical Controller
During power-up the Controller will display the Power Up Screens for a few seconds before defaulting to the Display
Screen. During this Power On Self Test mode, the Controller will perform a brief check of its internal systems and
installed modules and indicate which ones are detected. The opening screen includes the software version number and
will be required when requesting support. When turning on a number will be displayed in the lower left corner of the
display screen indicating how many seconds until control will actually start. This is to allow time for the sensor readings
to stabilize.
Power Up Screens
Display Screen
Display Screen: Displays measurements of connected sensors and also relay status. To the right of the Sensor readings are also displayed the set point values. To change set points you will need to go to programming and change them
there. Pressing the Up Arrow key when the curser is at the top of the readings screen will move you back to the opening
screen.
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The Display Screen
The DISPLAY SCREEN shows all the current measurements, as well as the
user programmed set points. It allows access to specific types of information
including the current measurements. Press the arrows on the touch pad to
scroll up or down or left or right as indicated by moving the > Cursor on the
screen.
Calibration: Position the cursor to the left of any of the three measurements
and press ENTER to calibrate that sensor. A value entry screen will then be
opened. Enter the calibrated value with the numeric key pad. To save your
specific calibration press "0" on the touch pad when the cursor is in front of
the value (The reading may not go to a zero reading but it will default to the
sensors uncalibrated reading).
Manually turn on relays: The relays in the Controller are represented on the
programming. When the relay is toggled to off the relay
immediately goes back to automatic control and in some cases may turn back
on immediately.
Main Status, cursor
at pH Relay
pH 7.67>OFF 7.50s
ORP 490 -OFF 700s
_____
69.0f SW1OFFSW2OFF
Calibrating Temperature
The temperature sensor is very accurate and should not require calibration. If the calibration is more than a couple
degrees off there may be an installation problem. The most common problems with temperature sensors are listed
below:
1. The most common temperature problem is the temperature is not the same at the sensor as it is in the main
body of water. It is also possible the temperature error is different depending on the time of day. Make sure the sensor
is not in direct sunlight, and is installed as far into the fitting and as close as possible to the body of water. Evaluate
where the sensor is installed.
2. The sensor may be damaged. If the sensor is put in a room of 76°F the resistance should be 10,000 OHM's
that can be measured with a standard voltmeter. To calibrate the temperature sensor move the cursor in front of the
temperature reading and press ENTER. Enter the measured value. Press ENTER again to save the calibration change.
Calibrating pH
Measure the pH using a standard test kit by taking several readings and averaging the results. To calibrate the pH
sensor move the cursor to pH and press ENTER. Enter the value obtained from the test kit in to the value entry screen.
Press ENTER again to save your changes.
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Calibrating ORP
!
WARNING
Always make sure the pH is at the set point before calibrating ORP. Always control
at PPM levels greater than 1.0 PPM when using ORP sensors.
IMPORTANT:
For best results the ORP should be at the ORP set point when calibrating.
For best results the PPM should be at the desired level when calibrating ORP.
Measure the current PPM
using a standard test kit. Calibrating ORP is intuitive and takes a little practice. The following
table can be used to improve the accuracy of the calibration. Follow the recommendations in the table and within a few
days the PPM should be on track. The values of interest are:
Measured PPM: The hand measurement.
Desired PPM: The actual PPM that is desired in the pool.
ORP: The value of ORP that is displayed on the screen.
ORP Set point: The value of ORP that the Controller is trying to achieve.
Hand PPMORP DisplayAction
Low
Perfect
Above hand
check
At hand check
Below hand
check
Above hand
check
Calibrate to hand check measurement: 10mV per each
PPM Low
Review Setpoints: May need to increase chemical feed
times
Calibrate to hand check measurement: 10mV per each
PPM Low
May need to decrease chemical feed times & calibrate to
hand check
At hand checkNo changes
Below hand
check
High
ACU-TROL® AK110 Chemical Controller Installation and User's Guide
28
Above hand
check
At hand checkLower the set point
Below hand
check
Calibrate to the hand check
May need to decrease chemical feed times & calibrate to
hand check
Calibrate to hand check measurement: 10mV per each
PPM High
Calibrating ORP
!
EXAMPLE 1: The default set point is 700, the PPM
hand measurement is 1.0 (2.0 PPM desired), and the current
display shows a measurement of 690 mV. From the above table the hand PPM is low and the ORP is below the set
point. The chemical feed times are not high enough for the ORP to reach the set point and should be increased.
table the hand PPM is high and the ORPisbelowthesetpoint.TheORPshouldbecalibratedto700+(4.0–2.0)*10=
720.To compare ORP measurements to PPM measurements per actual pH readings refer to the calculated PPM chart on
page 131.
Calibrating Calculated PPM
If you have an ORP sensor module and Calculated PPM mode selected. You can calibrate the Calculated PPM in the
following manner. Measure the PPM using a standard test kit. To calibrate the PPM, move the cursor to PPM and press
ENTER. Enter the value obtained from the test kit in the value entry screen. Press ENTER again to save your changes.
NOTE
You can enter the password 9003 to see the ORP and adjusted ORP being
used for calculated PPM. These ORP values will only be displayed for four
(4) seconds.
WARNING
Always make sure the pH is at the pH setpoint and PPM is greater than
1.5 PPM before calibrating calculated PPM.
Always control at PPM levels greater than 1.0 PPM when using
ORP sensors.
MANUAL RELAY CONTROL
Display Screens
Position the cursor to the left of the status word and press
ENTER
to toggle the relay on and off. The length of time the
relay is toggled to OFF the relay immediately goes back to
automatic control and in some cases may immediately turn
ON.
back
Main Status, cursor
at pH Relay
pH 7.67>OFF 7.50s
ORP 490 -OFF 700s
_____
69.0f SW1OFFSW2OFF
ACU-TROL® AK110 Chemical Controller Installation and User's Guide
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RELAY TIMER DISPLAY
The Relay Timer display indicates the present status of the 8 timers
used in the Controller. The most common use for this screen is to
perform diagnostics on a specific relay or to see how long a relay
has been on. From the DISPLAY SCREEN press the right arrow button
twice. Press the left arrow button to return to readings screen.
Timer Screen, Relay 1 (pH)
pH, Mix TMR00:00:00
>TD00:00:00
CNT: 0 S 00:00:00
STS:OFF TOT 0:00
Note: To reset the relay timers to zero use the right button to scroll the cursor beside the information that you want to
reset and then press the ENTER button.
To use a switch as a digital flow switch you must first set it up. To enter the setup screen from the DISPLAY SCREEN
move the cursor to the switch "SW_" to be setup and press ENTER. You can enter the number of pulses per gallon from
1 to 999.9. This second method should only be used for flow meters that generate less than one pulse per gallon.
The highest volume that can be accumulated from the flow rate is 65,535 gallons.
Flow can also be displayed in g/pul and Piezo.
NOTE: Switch 1 is the default ow switch for relay control and should not be used for digital ow if switch 2 is
available.
Flow Switch 2 Setup
Flow Switch #2
SW2 K => 8.5 pul/g
g/m = 35
Total = 256 Clear
NOTE: If k = 0 than g/m = and Total = will not be displayed on the screen.
ACU-TROL® AK110 Chemical Controller Installation and User's Guide
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