Zodiac TRi pH Module User manual

H00412500.A - 2013/02
Instruc ons for installa on and use
English
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www.zodiac-poolcare.com

H0412500.A - EN - 2013-02
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• Read these instrucons carefully before undertaking installaon, maintenance or repair of this equip-
ment!
• The symbol idenes important informaon that must be acted upon to avoid any risk of harming some-
one or damaging the equipment.
• The symbol idenes helpful informaon, for informaon only.
Warnings
• We are constantly improving our products and they may be modied without prior noce.
• This centralized control system is exclusively for swimming pools (and must not be used for other purposes).
• The equipment should be installed by a qualied technician, following the manufacturer's instrucons and
according to current local regulaons. The user is responsible for installaon of the equipment and for com-
pliance with local regulaons covering the installaon. Under no circumstances shall the manufacturer be
held liable if current local installaon regulaons are not followed.
• It is important that this equipment is operated by competent and qualied (both physically and mentally)
people that have previously received the instrucons for use (by reading this booklet). Any person not meet-
ing these criteria should not go near the equipment, to avoid the risk of being exposed to dangerous com-
ponents.
• If the equipment malfuncons: do not aempt to repair the equipment yourself – contact your installer.
• Before working on the equipment, ensure that it and any other equipment connected to it are disconnected
from the electricity supply.
• Before connecng it to the electricity supply, check that the voltage marked on the equipment matches the
mains supply voltage.
• Removing or bypassing one of the safety devices automacally voids the guarantee, as does ng replace-
ment parts not manufactured by us.
• Incorrect installaon can result in damaged equipment or serious physical injury (or even death).
• Keep the equipment out of the reach of children.
• The TRi pH or TRi PRO module is only designed to use pH minus (special liquid for use in swimming pools).
Use of other products automacally voids the guarantee.

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EN
Contents
1. Informaon before installaon .................................................................................................... 3
1.1 General delivery condions .................................................................................................................... 3
1.2 Contents ........................................................................................................................................................ 3
1.3 Technical specicaons ............................................................................................................................ 3
2. Installaon ................................................................................................................................................... 4
2.1 Preparing the pool: water balance ....................................................................................................... 4
2.2 Installing the TRi pH or TRi PRO module ............................................................................................. 5
2.3 Installing the POD....................................................................................................................................... 5
3. Use ..................................................................................................................................................................... 7
3.1 Acvang the module............................................................................................................................... 7
3.2 Display ........................................................................................................................................................... 7
3.3 Calibrang the sensor(s) .......................................................................................................................... 8
3.4 Adjusng the set point(s)......................................................................................................................... 8
3.5 Seng the pool volume ........................................................................................................................... 9
3.6 Peristalc pump .......................................................................................................................................... 9
4. Maintenance ............................................................................................................................................ 10
4.1 Cleaning the sensor(s)............................................................................................................................. 10
4.2 Winterizing ................................................................................................................................................. 10
5. Troubleshoong ..................................................................................................................................... 10
6. Product registraon ............................................................................................................................ 11

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1. Informaon before installaon
1.1 General delivery condions
All equipment, even carriage and packaging paid, is shipped at the recipient's risk. If damaged caused during transport
is observed, the recipient should write appropriate comments on the delivery note provided by the carrier (and con-
rmed in wring to the carrier by registered leer).
1.2 Contents
1.2.1 TRi pH module
TRi pH module POD pH sensor Buer soluon pH 7.5
Accessory bag (sensor holder, counterweight + securing
clip, PTFE tape and stoppers)
sucon + injecon hose
(5 meters) Hole saw, 22 mm
1.2.2 TRi PRO module
TRi PRO module POD pH sensor ACL sensor Hole saw, 22 mm
Accessory bag (2 sensor holders, counterweight +
securing clip, PTFE tape and stoppers)
sucon + injecon
hose (5 meters)
Buer soluon
pH 7.5
Buer soluon
700 mV
1.3 Technical specicaons
TRi pH module TRi PRO module
Supply voltage Low voltage (connected to the TRi chlorinator)
Peristalc pump ow rate 1.8 L/h
Maximum back pressure (injecon) 1.5 bar
pH and ACL sensor type combined, epoxy body Ø12mm (pH = blue / ACL = red)
pH and ACL sensor electrolyte KCI polymer
pH and ACL sensor cable(s) 5 meters armored, BNC plug (pH = blue / ACL = red)
pH correcon acid (pH minus only)

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TRi pH module TRi PRO module
pH minus dosage Proporonal cyclic
pH sensor tolerances 5 bar / 60°C
Measurement scale & pH sensor accuracy pH 0.0 to pH 12.0, ± 0.1 pH
pH sensor calibraon 1 point, pH 7.5
ACL sensor tolerances / 5 bar / 60°C
Measurement scale & ACL sensor accuracy / 100 mV to 1000 mV / ± 10 mV
ACL sensor calibraon / 1 point, 700 mV
pH and ACL sensor response me < 15 seconds
Dimensions (w x h x d) 28.5 x 15.5 x 7.5 cm
Weight (module only) 1 kg
Protecon index IP23
2. Installaon
2.1 Preparing the pool: water balance
The TRi is designed to disinfect the water in the pool by means of its salt chlorinaon funcon.
With the TRi pH module, it automacally maintains the pH value of your pool.
With the TRi PRO module, it automacally maintains the pH value and chlorine level (ACL or Redox potenal) of your pool.
It is essenal for the water balance of the pool to be checked and adjusted before installing this equipment. Ensuring the
water balance of the pool is correct from the start will reduce the likelihood of encountering problems in the rst days
operaon or during the season using the pool.
Even if it is an automac control system, it is essenal to analyze the water regularly to check the water balance
parameters.
Unit Recommended
values To increase To decrease Test frequency (during season)
pH / 7.2 to 7.4 Deacvate dosage
or add pH+
Automac
(pH minus Perfect pH- or
pH-
Weekly
Free
chlorine mg/L or ppm 0.5 to 2
Increase ACL set
point or add chlo-
rine
Decrease ACL set point
or turn o the unit Weekly
TAC
(alkalinity or
buering power)
°f (ppm) 8 to 15
(80 to 150)
Add alkalinity cor-
rector
(Alca+ or TAC+)
Add hydrochloric acid Monthly
TH
(calcium hard-
ness)
°f (ppm) 10 to 30
(100 to 300)
Add calcium chlo-
ride
Add calcium binder
(Calci-) or decarbonate Monthly
Cyanuric
acid
(stabilizer)
mg/L or ppm < 30 Add cyanuric acid
(only if necessary)
Parally drain the pool
and rell it Quarterly
Salinity g/L or kg/m³ 4Add salt
Leave as it is or parally
drain the pool and rell
it
Quarterly
Metals
(Cu, Fe, Mn…) mg/L or ppm ± 0 / Add metal binder (Metal Free) Quarterly

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2.2 Installing the TRi pH or TRi PRO module • Turn o your Zodiac TRi salt chlorina-
tor and then ltraon by cung o the
main electricity supply in order to iso-
late the installaon.
• Close the isolang valves in the pipe-
work.
• Remove the silver cover by pressing the
sides and raising it, then unscrew the
four screws aaching the original (emp-
ty) lower module to the main unit.
• Remove the empty module and oer up
the TRi pH or TRi PRO module.
• Connect the ribbon cable from the TRi
pH or TRi PRO to the connector on the
TRi power pack.
• Put the TRi pH or TRi PRO module in po-
sion, replace the four screws and re-
place the silver cover.
• Do not reconnect the electricity supply unl the TRi pH or TRi PRO module, the sensor-holding POD and the pH
minus injecon pipe have been installed (see § 2.3.3).
• Always wait 2 minutes, parcularly when performing any technical work, between disconnecng the TRi from
the mains electricity supply and connecng the TRi pH or TRi PRO module.
2.3 Installing the POD
The sensor-holding POD is a single assembly including the ow rate detector (used by your TRi chlorinator, see § 2.3.2),
the pH and ACL sensors and pH minus injecon.
• The TRi unit bypass valves must always be open.
• The sensor-holding POD must always be posioned on a horizontal pipe so that the sensors are vercal.
• The POD must be the rst unit ed aer the pool lter.
• If the pool is ed with a heang system (heat pump, heat exchanger, electric heater, etc.), the POD must be
installed before it (to take readings on unheated water).
• We recommend posioning the POD more than 20 cm from an elbow in the pipe.
• The sensor cables must not be posioned near high voltage mains electricity cables.
pH sensor
Flow switch
Water circulaon direcon
pH minus injecon
ACL sensor
A badly-installed sensor may give false readings and cause inappropriate operaon of the TRi unit. Neither the
manufacturer nor the unit shall be liable in this event.

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• Idenfy a suitable length (minimum 30 cm, without elbow) of straight
pipe.
• Dismantle the POD and keep the lower part with 2 holes,
• Turn the lower part of the collar upside down and place it in the posion
where you want to install it on the pipe.
• Use a center-punch or marker pen to mark the posion of the holes to be
made in the pipe.
• Using the holes saw supplied, cut the 2 feed holes for the POD.
Ensure that the edges of the holes are smooth and deburred!
• Place the upper part of the POD on the pipe, sliding it into the previously-drilled holes.
The arrows on the upper part of the POD collar show the direcon of water ow.
Reducer (marked
'EU') Ø50 mm
Collar Ø63
• Click the 2 parts of the POD collar together around the pipe. For a Ø50 mm pipe, use the reducer
labeled 'EU'. Do not use this reducer for a Ø63 mm pipe.
• Posion the upper part of the POD with its various components in the direcon indicated by the
foolproof locang notch and ghten the locking ring rmly (hand-ghten only).
2.3.1 Installing the pH and ACL sensors
• Take the sensor holder(s) and put 10 to 12 turns of PTFE tape around its main thread.
• Screw the sensor holder into its seat on the POD.
• Carefully unscrew the protecve bole from the sensor.
• Rinse the end of the sensor with tap water and shake o excess water.
Never wipe the sensor using a cloth or paper ssue, as this may damage it!
•Insert the sensor into the sensor holder and hand-ghten the locking ring.
Ensure that the sensor is not inserted too far (see photo with a doed line marking
the inseron limit).
• Once installed, the sensors can be connected to the TRi power pack using the BNC sockets
labeled 'pH' (blue) and 'ACL' (red). They must now be calibrated (see § 3.3).
2.3.2 Installing the ow switch
Possible posions of the ow switch:
-aer the upstream valve if the cell is bypassed
-on the POD if the cell is in-line

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a) TRi pH or TRi PRO module installed at the same me as the TRi chlorinator
• Locate the ow switch supplied with the TRi chlorinator.
• Screw the ow switch into the seat provided on the POD (hand-ghten).
The arrow indicang the water ow direcon on the top of the ow switch must be parallel with the pipe on
which the POD is posioned.
b) TRi pH or TRi PRO module added to an installaon already equipped with a TRi chlorinator
When the swimming pool already has a TRi unit, the ow switch is already installed. Leave the ow switch in place. Un-
screw the threaded adaptor located on the POD and replace it with the stopped supplied to seal the hole.
2.3.3 Installing the pH minus injecon line
When handling chemical products, always use appropriate safety equipment (safety glasses, gloves and jacket).
a) Installing the injecon line (peristalc pump > non-return valve)
• Remove the protecve cover from the peristalc pump,
• Cut a suitable length of pipe from the coil supplied to connect the
peristalc pump to the injecon non-return valve located on the
POD
• Aach the pipe to the threaded connector on the peristalc pump
outlet.
• Aach the other end of the pipe to the injecon non-return valve.
b) Installing the intake pipe (container > peristalc pump)
• Cut a suitable length of pipe from the coil supplied to connect the
container of pH minus to the peristalc pump.
• Aach the pipe to the threaded connector on the peristalc pump
inlet.
• Make a hole to t the diameter of the intake pipe in the cap of the
pH minus container and another smaller hole to avoid the con-
tainer distorng as the product is sucked up.
• Pass the free end of the pipe through the hole made in the cap and
put the ceramic counterweight and threaded locking nozzle on the end.
• Ensure that ALL connecons are correct and waterght before operang the TRi pH or TRi PRO module.
• Replace the protecve cover on the peristalc pump.
3. Use
3.1 Acvang the module
The Zodiac TRi power pack automacally detects the presence of a TRi pH or TRi PRO module. It is now ready to be used
with automac pH control using the TRi pH module or pH and ACL control using the TRi PRO module.
3.2 Display
The LCD screen will display 2 extra lines:
- TRi pH module:
pH set point

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EN
- TRi PRO module:
pH set point ACL set point
A '^' symbol appears to the right of the set point if the value measured by the equipment needs to be corrected automa-
cally (pH of water in the pool higher than the set point and/or insucient chlorine level). Then pH minus is injected and/
or chlorine produced automacally according to the dened cycles.
By default, pH regulaon (peristalc pump in the TRi pH or TRi PRO module) is disabled and the LCD screen will
display 'pH ---'. It is enabled automacally about 8 hours aer being turned on. To enable pH regulaon immedi-
ately and so display the set point on the LCD screen, see § 3.6.2.
3.3 Calibrang the sensor(s)
• To operate accurately and reliably, the sensors must be calibrated before using the TRi chlorinator with the TRi
pH or TRi PRO module. To maintain maximum eciency of the unit, we recommend calibrang at least once
every 2 months during the period the swimming pool is being used.
• Ensure the sensors are cleaned before calibraon (see § 4.1).
•Conrm that the TRi power pack is plugged in,
•Stop the pool pump and isolate the sensors by closing any valves, so as to be able to re-
move the sensors safely.
•Remove the sensors from their sensor holder on the POD (unscrew the locking ring by
hand).
•Rinse the end of the sensors with clean water and shake them to remove excess water.
Do not touch or wipe the glass bulb at the end of the sensors.
•Put the pH sensor into a sample of the pH7.5 buer soluon supplied.
•Put the ACL sensor into a sample of the 700 mV buer soluon supplied.
•Leave the sensors immersed for about 1 minute to obtain a reliable measurement.
•Press , then use the or keys to display 'CALIB. PH' or 'CALIB. PH/ACL', then press .
•Use the or keys to display 'PH CALIBRATION' or 'ACL CALIBRATION', then press .
Note the measured value:
•pH = 'X.X'
-If the value is greater than 8.2 or less than 6.4: the sensor is dirty or has been damaged during transport. Clean the pH
sensor (see § 4.1) then repeat the above steps. If the problem persists, contact your reseller.
-If the value is between 6.4 and 8.2, press to begin calibraon. The procedure takes about 15 seconds.
-When calibraon is nished, check that the value displayed equals 7.5, otherwise repeat the calibraon.
•ACL = 'XXX'
-Start the calibraon procedure by pressing ; the procedure lasts about 15 seconds,
-If the value is 700: calibraon is correct
-If the value is not 700: repeat the calibraon steps. If the problem persists, contact your reseller.
•Press or wait 30 seconds to exit.
3.4 Adjusng the set point(s)
The set point is displayed connuously on the LCD home screen.
The default seng for the pH set point is pH7.2 (TRi pH and TRi PRO modules).
The default seng for the ACL set point is 4 (TRi PRO module).
This value provides the ideal compromise to achieve opmum eciency in terms of water disinfecon.

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• Calibrang the sensors (see § 3.3).
• Press , then use the or keys to display 'CALIB. PH' or 'CALIB. PH/ACL', then press .
• Use the or keys to display 'PH SET POINT' or 'ACL SET POINT', then press .
• Use the or keys to change the set point value.
• Press or wait 30 seconds to exit.
• The ACL set point displayed by the TRi PRO does not match the free chlorine concentraon in the pool. This is
the desired level of 'disinfecon potenal' in the water.
• The ACL set point required to reach the opmum chlorine level is dierent in every swimming pool. A period
manual measurement of free chlorine level in the pool is therefore necessary to adjust this ACL set point.
• To increase the chlorine producon potenal: increase the ACL set point.
• To decrease the chlorine producon potenal: decrease the ACL set point.
We recommend checking the free chlorine level in the pool a few days aer installing the TRi PRO, to deter-
mine if the opmum level has been reached (0.5 to 2 ppm, see § 2.1). If, aer this period, the free chlorine level
is unsuitable, the ACL set point must be changed.
3.5 Seng the pool volume
List of levels with corresponding volumes:
•Level 1: For small pools up to 40 m³
•Level 2: For mid-size pools from 40 to 60 m³ (default level)
•Level 3: For large pools between 60 and 110 m³
•Level 4: For very large pools over 110 m³
• These values are for guidance only; the choice may vary according to the condions of use.
• When the volume of the pool is at the limit between 2 levels, it is beer to use the higher level.
• However, we recommend not 'over-sizing' the choice of level, to avoid using too much pH minus.
• A dose of pH minus is injected into the pool every 2 hours (when the ltraon and TRi chlorinator systems are
running).
• Press , then use the or keys to display 'CALIB. PH' or 'CALIB. PH/ACL', then press .
• Use the or keys to display 'POOL VOLUME', then press .
• Use the or keys to select the desired level appropriate to the pool size.
• Press to conrm the choice then press or wait 30 seconds to exit.
3.6 Peristalc pump
3.6.1 Test / priming the peristalc pump
Aer installaon, we recommend tesng the peristalc pump for the TRi pH or TRi PRO module and priming it (system
normally self-priming).
• Before tesng the peristalc pump, ensure that all pH minus sucon and injecon pipes are correctly con-
nected.
• Always use appropriate safety equipment when handling chemical products.
• Switch on the TRi power pack ( buon).
• Press , then use the or keys to display 'CALIB. PH' or 'CALIB. PH/ACL', then press .
• Use the or keys to display 'TEST DOSAGE'.
• A warning will be displayed briey, then press to conrm starng the pump. The peristalc pump will operate for
about 30 seconds and will stop automacally.
• If the pump must be stopped immediately, press .
• Conrm that the pump is primed (pH minus soluon will be visible in the translucent pipes).