Pahlen MiniMaster User manual

MiniMaster
Copyright © 2011 Pahlén AB, Box 728, SE-194 27 Upplands Väsby, Sweden
Tel. [phone], Fax [phone], e-mail: [email protected], www.pahlen.com
Manual
User manual
Инструкция
Manuel d’utilisation
Handboek
MA60-16 rev.4
Swedish design
and manufacture
since 1967

11
MiniMaster
MA60-16E
ENGLISH
This documentanditscontentsaretheexclusive
propertyofPahlénsandmaynotbecopied,
reproduced,transmittedorcommunicatedtoathird
party,orusedforanypurposewithoutwrittenpermission.
Art.no.
Rev.no.
Scale
Designed by: Approved by:
Revised by: Date
Drawn by: Date
Drawing number
Assembly drawing no.
Surface treatment
part of ISO 2768-1
The tolerance class in accordance with this
E
Box 728, SE-194 27 Upplands Väsby, Sweden
Phone [phone], Fax [phone]
4166X0 se tabell
CRO 2010-09-01
ASA 2013-02-19
MiniMaster pH - Redox
MiniMaster pH - fritt klor
M11278 4
500
31083 310
500
Sid 3. Till MA60-16
85 310 310
500 500
1. Product description
MiniMaster is an electronic unit that monitors and controls the pH value and/or chlorine levels in a swimming pool. The pH value
is measured using a pH electrode, whilst chlorine levels are measured using a free chlorine electrode.
MiniMaster can be connected to a dosing module for acid or alkali (pH) and chlorine.
The pack contains: 1 x control unit, 5 m PE hose, 1.5 m PVC hose, pre-lter and hose couplings.
The electrode kit is supplied separately, containing electrode(s), cleaning agent and, in the case of the pH model, also pH 7.3
buffer solution.
2. Technical data MiniMaster pH/chlorine MiniMaster chlorine MiniMaster pH
Power consumption - excl. dosing module 4W 2W 2W
Power consumption - dosing module (max.) 2x100W 100W 100W
Rated current 1 A
Voltage 220-240V 1~N 50/60Hz
Temperature range 0 to +45°C
Seal class IP44
Dimensions L x W x H 310 x 85 x 500 mm
Weight 2 kg
3. General information
MiniMaster continuously measures and indicates the pH value and chlorine content of pool water.
Where values to not conform to specied limits, the control unit issues signals to an external dosing module that doses the water.
In order to maintain a balanced water quality, it is important that you adhere to the recommended value detailed below. pH values
outside the recommended limits will provide misleading chlorine values in the MiniMaster.
If the pool water has previously been dosed with organic chlorine (e.g. in tablet/disc form), this may produce inaccurate chlorine
measurements (for measures to correct this, see section 8, paragraph 7).
We recommend you use a photometric test instrument to obtain a reference measurement.
MiniMaster must be installed against a wall or similar, and must sit straight. It is recommended that MiniMaster is installed
indoors or under cover, and is easily accessible in order to enable easy ready of values, allow servicing to be carried out, take
water samples and clean the pre-lter.
Recommended values in respect of water quality
Chlorine content: 0.5-1.0 mg/l (ppm)
pH value: 7.2-7.6
Alkalinity: 60-120 mg/l (ppm)
Chloride (salt) content: max 10 g/l (1%)
Calcium hardness: 100-300 mg/l (ppm)
Cyanuric acid: max 5 ppm
For more details about pool chemistry and care, see the User’s Guide on our website http://www.pahlen.com/users-guide/
4. Safety
The MiniMaster supply voltage must be interlocked in parallel over the connection to the pool circulation pump. This is to ensure
reliable supply and to protect against accidental dosing when the circulation pump is not in operation.
Dosing of chlorine, acid or similar substances shall be done after all other equipment in order to minimise the risk of corrosion.
Dosing points in the liquid acid and chlorine circulation system shall be positioned as far from each other as possible, but at least
500 mm, and chlorine dosing must always be positioned last, see Figure 4.
5. Dimensions
MiniMaster ph/chlorine MiniMaster chlorine or pH

12
MiniMaster
MA60-16E
ENGLISH
1
4
2
3
5 5
12
9
15
16
18
13
19
7
6
8
11
9
10
10
A
B
C
17
14
This documentanditscontentsaretheexclusive
propertyofPahlénsandmaynotbecopied,
reproduced,transmittedorcommunicatedtoathird
party,orusedforanypurposewithoutwrittenpermission.
Art.no.
Rev.no.
Scale
Designed by: Approved by:
Revised by: Date
Drawn by: Date
Drawing number
Assembly drawing no.
Surface treatment
part of ISO 2768-1
The tolerance class in accordance with this
E
Box 728, SE-194 27 Upplands Väsby, Sweden
Phone [phone], Fax [phone]
4166X0 se tabell
CRO 2010-09-01
ASA 2013-02-19
MiniMaster pH - Redox
MiniMaster pH - fritt klor
M11278 4
500
31083 310
500
Sid 3. Till MA60-16
4
3
1
2
1
2
MiniMaster
Pool
MiniMaster
Pool
L2 L1
6. Installation
It is recommended that tapping saddles (not included, to be purchased separately) are tted on pipes for measurement water
connection points to and from MiniMaster, and for dosing points for liquid acid and chlorine via hose pumps.
A exible PVC hose (included) must run between the MiniMaster and pre-lter. A rigid PE hose (included) must run between the
pre-lter and the pipes.
1. Fit the MiniMaster against a wall.
2. Fit the accompanying connections on the Minimaster, see gs. 2 and 3:
Remove the saddle (M), fold the modules forwards, screw the connections tight to the MiniMaster’s inlet and outlet.
3. Assemble the pre-lter, see instruction MA60-22. NB The cover on the lter has an arrow indicating the direction of ow.
4. Fit the pre-lter in a suitable position close to the MiniMaster.
5. Cut the accompanying exible PVC hose to appropriate lengths and connect them, without sharp bends, between the Mini-
Master and pre-lter.
A small piece of exible hose may also be tted to the measurement water outlet if required.
6. Inlet A: Fit a tapping saddle after the sand lter (see A Figure 4) on the pressure side of the pool circulation pump.
7. Outlet B: Fit a tapping saddle after the overow (see B Figure 4) on the suction side of the pool circulation pump.
8. Cut the accompanying rigid PE hose into two appropriate lengths, t hose couplings on both ends.
9. Connect one hose to the pre-lter and inlet A. Use a thread seal when connecting to the tapping saddle/pipe.
10. Connect the other hose to the pre-lter and inlet B. Use a thread seal when connecting to the tapping saddle/pipe.
Alternative location of outlet B: route the hose direct down into the overow (C, Figure 4).
11. If dosing pumps are used for liquid chlorine and acid/alkali, the dosing points must be located at least 500 mm apart,
after other equipment for heating/other disinfection. Chlorine dosing must always be positioned last.
1. Skimmer
2. Main drain
3. Inlet
4. JetSwim
5. Light
6. Circulation pump pool
(secondary ow)
7. Filter
8. Heat exchanger
9. Non-return valve
10. Drain
11. Circulation pump hot water
(primary ow)
12. Boiler
13. MiniMaster
14. Pre-lter MiniMaster
15. Chlorine dosing
16. Chlorine
17. Acid/alkali dosing
18. Acid/alkali
19. Salt chlorinator
Fig. 1. Pre-lter Fig. 2. MiniMaster
Fig. 3.
Fig. 4.
Measurement water cock N
Meassurement water outlet
Pool
MiniMaster
MiniMaster
Pool
PVC hose
PE hose
PVC hose
PE hose Ball valve L1Ball valve L2

13
MiniMaster
MA60-16E
ENGLISH
BNC
GND
7. Electrical installation
The electrical installation must always be carried out by a qualied electrician.
The pipe installation must be complete before the electrical installation begins.
It is recommended that a power switch is tted before the unit in permanent installations. Interlocked supply voltage from
circulation pump. Connect the power supply cable and any dosing module in accordance with the diagram below.
The multi-pole contacts connected to the circuited board can be removed to allow access to screw terminals for each cable
connection.
AC IN
Main connection of power to unit.
Relay connection
Connection of dosing module, 230VAC,
NOT potential-free.
R+: Phase (for dosing of chlorine and pH
augmenting agent)
R-: Phase (for dosing of pH reducing agent)
RN: Zero/Neutral (Common for dosing)
OC+/OC-:
Transistor ”open collector” output for dosing
module, 5V.
pH/Chlorine:
Contact for connection of electrode.
GND:
Connection of earthing sleeve
(Chlorine measurement only).
The control unit cover can easily be hooked permanently in the open position in order to facilitate installation work.
Undo the cover’s four screws. NB Make sure that the ribbon cable from the circuit board to the cover does not become crushed.
Hook the cover securely as shown in the diagram below.
Fig. 5.
Carefully hook the cover
securely to the edge of the
circuit board.
Display panel
Dosing pump
1~230V AC
Salt chorinator
Red
Black
Red
Black
Brown
Connection of ow
signal between circuit
boards ( 416620 only).
Green
White

14
MiniMaster
MA60-16E
ENGLISH
E
1
2
3
4
5
6
7
G
F
E
H
J
8. Start
Preparation
1. Check that the pool’s water values are within the recommended limits; use photometric measurement equipment to conrm.
2. Immediately prior to start-up, the electrodes must be tted in each module.
Then connect the electrode’s BNC contact to the relevant control unit, see Figure 5. NB! The characteristics of the electrodes
may be hampered if they are left in a dry environment for more than one hour.
Fig. 6. Fig. 7.
Start-up
First read the paragraph “LEDs” in section 10 Operation, which describes Mini-
Master’s LED signals and what they mean.
In order for the unit to give the correct value, the pool circulation pump must be in operation.
1. Turn on the power to the MiniMaster.
2. Open all cocks.
3. Press the Flow button (F).
(Where there are two control units, this only needs to be done on the left-hand unit.)
4. Adjust the ow using the ow screw (H) until the green LED comes on.
Check that there is a ow through the unit; this can be seen in the window (J), and that
water is owing freely through the hoses. If the exible PVC hose on the right hand side
of the MiniMaster (the return hose) is sucked together by underpressure, see the
appropriate action to take under “Trouble shooting” in section 14.
5. Let the tting ow for at least 30 minutes in order to stabilise the electrodes and eliminate air in the tting.
6. Check the pH value of the pool.
7. Balance the pH value, see below.
Balance pH value
Drain measurement water from the drain cock (N) and check the pH value of the pool by using photometric measurement
equipment. Balance the pH value to 7.2-7.4 by dosing acid (where pH value is high) or alkali (where pH value is low)
manually direct into the pool or using MiniMaster dosing modules (accessories);
- press button (E) to activate the dosing function
- press button (G) for 3 seconds for forced dosing for 30 seconds.
- then press button (E) to stop the dosing function.
Concentrated dosing may initially produce signicant uctuations due to the size of the pool and circulation speed. Let the
uctuations level out and carefully check that the pH value has stabilised.
8. The pH value of the water must be in balance before you continue to balance the free chlorine value, see below.
Balance free chlorine value
Drain measurement water from the drain cock on the pre-lter (N) and check the pool’s free chlorine value using photometric
measurement equipment.
Balance the chlorine value to 0.5-1mg/l either by dosing the pool with chlorine manually or by using the MiniMaster’s
dosing modules;
- press button (E) to activate the dosing function
- press button (G) for 3 seconds for forced dosing for 2 minutes
- then press button (E) to stop the dosing function.
Concentrated dosing may initially produce signicant uctuations due to the size of the pool and circulation speed. Let the
uctuations level out and carefully check that the chlorine level has stabilised.
NB If organic chlorine (weekly chlorine in disc form) is used or has been used in the pool, this will release cyanuric acid into the
pool water. Cyanuric acid in the water produces misleading chlorine measurement values and calibration errors in the MiniMaster.
In such instances, dilute the pool water with as much fresh water as possible so that cyanuric acid levels fall to the recommended
value (see “Recommended values...” in section 3 General information).
9. Once the values for both pH and free chlorine are in balance at the same time, you may continue and calibrate the MiniMaster.
Each unit must be calibrated separately. The operate independently of each other.

15
MiniMaster
MA60-16E
ENGLISH
E
1
2
3
4
5
6
7
G
F
E
9. Calibration
The electric diodes must be cleaned, the tting must have the correct ow and the dosing mode must be deactivated before
calibration takes place. Each unit is calibrated separately, they are independent of each other.
Calibrate pH
1. Reference for calibration can be either poolwater (option 1) or reference uid (option 2). The pH value must be between
7.2 and 7.4.
Option 1 poolwater: Drain the measurement water from the drain cock on the pre-lter (N). Check it using a photometric
measurement instrument.
Option 2 reference uid: Shut of the measurement water ow to the tting. Undo the brace (M), fold out the modules,
disconnect the electrode’s BNC contact (see g, 5) from the control unit, unscrew the pH electrode from the module,
ret the BNC contact.
Fill a measurement glass with pH 7.3 reference uid to the point that it covers the end of the pH electrode (the reference
uid is forfeited and may not be re-used).
2. Calibrate the unit by simultaneously pressing the calibration buttons (F+G) and keeping them pressed.
The LED will ash quickly (approx. 5 times/second), conrming that the calibration process is in progress.
3. Once calibration is complete, the LED will ash more slowly and you may now release the buttons.
The calibrated value is saved in the unit’s memory. The green LED in the centre comes on and now represents this value.
4. Once the unit has been calibrated, dosing may be activated by pressing the control unit’s On/Off button (E).
The LED for the current value now comes on with a steady light.
Calibrate free chlorine
1. Measurement test, free chlorine: Drain measurement water from the drain cock (N) on the pre-lter; use photometric
measurement equipment and check that the free chlorine value is between 0.5 - 1mg/l (ppm).
2. Calibrate the unit by simultaneously pressing the calibration buttons (F+G) and keeping them pressed. The LED will ash
quickly (approx. 5 times/second), conrming that the calibration process is in progress.
3. Once calibration is complete, the LED will ash more slowly and you may now release the buttons.
The calibrated value is saved in the unit’s memory. The green LED in the centre comes on and now represents this value.
4. Once the unit has been calibrated, dosing may be activated by pressing the control unit’s On/Off button (E). T LED for the
current value now remains on constantly.
If the calibration process is not successful, this is usually due to an unreasonable value (the previously stored value will remain
in the memory). The entire process will need to be repeated.
10. Operation
The value measured in the pool is shown symbolically on the display using the seven LEDs.
The green LED indicates MiniMaster calibrated value (everything is OK). Yellow/red LED indicate deviation from calibrated
value, see table below. Flashing LEDs indicate that the MiniMaster is measuring, with the speed of the ashing showing
whether or not dosing has been activated, for more information, read under “LEDs” on the next page.
In the event of a high pH value: Relay output R- activated in respect of acid dosing.
In the event of a low pH value: Relay output R+ activated in respect of alkali dosing.
In the event of a low chlorine value: Relay output R+ activated in respect of chlorine dosing.
The process of switching between acid & alkali dosing is described in section 12: Changing factory settings.
Bild 8
LED →
↓
1. Red
Low 2. Yellow 3. Yellow 4. Green Ok 5. Yellow 6. Yellow 7. Red High
pH < 6.8 6.8–7.0 7.0–7.2 Calibration value
(rec. 7.2–7.4) 7.4–7.6 7.6–7.8 >7.8
Free chlorine < -80% -60% -30% Calibration value
(rec. 0,5–1 ppm) +30% +60% >+80%
Flow l/h <10 11–18 18–26 27–52 53–72 72–100 >100

16
MiniMaster
MA60-16E
ENGLISH
Dioder
Type of LED signal Meaning
The two red LEDs come on with a steady light The unit is not calibrated - dosing is not possible
The two red LEDs ash alternately Flow too high or too low – dosing shut off.
All red and yellow LEDs ash at the same time Dosing has taken place continuously for 90 mins – dosing shut off.
To restart: see troubleshooting.
Flashing LED, lit for a long period - out for a shorter period Dosing is activated, metering in progress.
Flashing LED, lit for a short period - out for a longer period Dosing is not activated, but metering is in progress.
Rolling LEDs Forced dosing in progress
11. Buttons
E On/Off - activates/deactivates dosing function
F Flow - when pressed, current ow through the MiniMaster tting is displayed.
F+G Calibration
G Forced dosing - when pressed for 3 seconds, this button engages forced dosing for 2 minutes for chlorine and
30 seconds for pH (rolling LEDs). If a forced dosing that is in progress needs to be interrupted: press button (E).
12. Changing factory settings
Time-Out – dosing time exceeded
The Time-Out function is an integrated safety protection function in the software and limits continuous dosing time.
The function is factory set and shuts off dosing and issues an alarm after 90 minutes of continuous dosing. This is to prevent
unreasonable dosing, which may occur, e.g. in the event of leaks or measurement errors.
If the dosing module (e.g. a Salt Chlorinator) requires more than 90 minutes’ dosing to achieve the correct values, the Time- Out
function may be deactivated, see below.
When power to the MiniMaster is switched on, a start sequence begins after about 2 seconds and the LEDs (1-7) come on in
sequence, after which the set mode is displayed (see point 5 below).
Deactivation of Time-Out (chlorine unit only)
1. Switch off the power to the MiniMaster.
2. Turn on the power
3. Press button E when LED 1 comes on, and release when LED 2 comes on (each LED ashes twice/second).
4. Press button E when LED 6 comes on, and release when LED 7 comes on.
5. Once the start sequence is complete, the mode set is conrmed using the following ashing indicators:
‒ LED no. 3, 4 and 6 ashing = deactivated Time-Out (‒ LED no. 3, 4 and 5 ashing = activated Time-Out)
Save the setting by keeping button E pressed for 3 seconds immediately after LED indication conrmation has completed
(ashes 5 times) until LED 1 or 7 ashes quickly.
6. To check the unit’s setting: shut off, wait around 3 seconds, turn power back on to the unit - LEDs 1-7 ash during the start
sequence, with the ashing indications as described in point 5.
7. In order to activated the Time-Out function again, repeat the process from step 1.
NB If Time-Out is deactivated for a longer period of time (and dosing is done using liquid chemicals), an unlimited quantity of
chemicals may be dosed into the pool or leak out into the machine room should a fault occur. Always check hoses, connections
and chemical levels regularly and make sure that Time-Out is activated.
Dosing setting (acid or alkali)
The dosing function for pH reducing agent (acid) is factor set in the pH unit.
When power to the MiniMaster is switched on, a start sequence begins after about 2 seconds and LEDs 1-7 come on in
sequence, after which the set mode is displayed, see point 5 below.
If instead you want to dose an alkali solution in order to increase pH effects, a reset must be carried out as described below:
NB! This only applies to the pH unit, and pH calibration must be carried out before making this change.
Resetting to Alkali dosing (pH unit only)
1. Switch off the power to the MiniMaster.
2. Turn on the power
3. Press button E when LED 1 comes on, release when LED 2 comes on (each LED ashes twice/second).
4. Press button E when LED 6 comes on, and release when LED 7 comes on.

17
MiniMaster
MA60-16E
ENGLISH
5. Once the start sequence is complete, the mode set is conrmed using the following ashing indicators:
‒ LED no. 2, 4 and 5 ashing = alkali dosing activated.
Save the setting by keeping button E pressed for 2 seconds immediately after LED indication conrmation has completed
until LEDs 1 and 5 start to ash quickly.
6. To check the unit’s setting: shut off, wait around 3 seconds, turn power back on to the unit - LEDs 1-7 ash during the start
sequence, with the ashing indications as described in point 5.
7. In order to change dosing settings for acid, repeat the process from step 1. Once the start sequence is complete, the mode
set is conrmed using the following ashing indicators:
‒ LED no. 2, 4 and 6 ashing = acid dosing activated.
13. Maintenance
• When rinsing the pool sand lter – close the shut-off valves (L1 and L2) on the pre-lter running to and from the MiniMaster.
• Check the ow by pressing button (F) – adjust to the correct ow using set screw (H) on the start module.
• Reference measurement of chlorine and pH levels must be carried out once or twice a month using digital photometric
equipment and calibrating accordingly. Take measurement water from the measurement water outlet on the pre-lter.
In the event of a deviation from the calibrated value – clean the electrodes and re-calibrate.
• The threads and O-rings of the plugs should be lubricated at least once a year using silicon grease with PTFE (non-petroleum
based grease).
• Check hoses, connections and chemical levels on a regular basis.
Electrodes
Should be cleaned on a regular basis (see instruction MA60-06: Electrodes, use and maintenance), at least once a month in the
case of freshwater pools, and twice a week in the case of salt water pools.
1. Shut off dosing (on/off button E).
2. Shut off the water ow by closing the ball valves (L1 and L2).
3. Lift the locking brace (M) and fold the modules forward, see Figure 3.
4. Remove the electrode’s BNC contact (see Figure 5) from the control unit.
5. Unscrew the electrode and lift it up out of the unit.
6. Clean, rinse and ret it.
Filter
Check the lter on a regular basis and clean if necessary. Replace the lter cartridge as a when required.
1. Shut off dosing (on/off button E).
2. Shut off the water ow by closing the ball valves (L1 and L2).
3. Unscrew the lter housing in which the lter cartridge sits.
4. Replace or rinse the lter using normal tap water. A soft brush may be used if necessary.
Adjuster screws
Adjuster screw (H) and Measurement water tap (N) must be cleaned if necessary so that they do not seize due to scale build-up.
1. Shut off dosing (on/off button E).
2. Shut off the ow using the ball valves (L1 and L2).
3. Unscrew the adjuster screw, rinse and dry off.
4. Lubricate the O-ring and the thread of the plug using a little silicon grease.
Winter storage
• Where there is a risk of freezing, the modules and the pre-lter must be drained of water, bottom plugs and electrodes
removed and stored in a frost-free location (standing in water).

18
MiniMaster
MA60-16E
ENGLISH
14. Operation information and troubleshooting
LED signals
Type of LED signal Explanation
The two red LEDs come on with a steady light The unit is not calibrated - dosing is not possible
The two red LEDs ash alternately Flow too high or too low – dosing shut off
All red and yellow LEDs ash at the same
time
Time-Out function:
Dosing has taken place continuously for 90 mins – dosing shut off.
- Check dosing pump function and setting.
- Check that the chemical level in the drums is not too low.
- Check leakage/function of the dosing hoses, dosing points and dosing pumps.
- If the installation has a salt chlorinator: Check that the salt chlorinator is not
shut off, that it is correctly set and that the signal cable between the chlori-
nator and the MiniMaster is correctly connected.
Restart: First shut off the dosing (On/Off button E), wait a few seconds,
then start dosing by pressing the On/Off button (E) again.
LED comes on with a steady light
lit for a long period - out for a shorter period
Dosing is activated, metering in progress
Flashing LED,
lit for a short period - out for a longer
period
Dosing is not activated, but metering is in progress
Rolling LEDs Forced dosing in progress
Chlorine unit only:
Flashing LEDs 3, 4, 5 after start sequence Time-Out activated = dosing blocked after 90 minutes of continuous dosing,
(factory set value)
Flashing LEDs 3, 4, 6 after start sequence Time-Out deactivated (unlimited continuous dosing)
pH unit only:
Flashing LEDs 2, 4, 5 after start sequence Alkali dosing activated
Flashing LEDs 2, 4, 6 after start sequence Acid dosing activated
Troubleshooting
Type of fault Action
Unit does not start 1. If the unit is interlocked over a shut down circulation pump, the unit will not
start.
2. Check fuses on the circuit board.
Unstable/low ow in the tting Check/clean the pre-lter Clean and lubricate the adjuster screw on the tting.
The unit cannot be calibrated 1. Low/high measurement water ow (chlorine unit only) - check lter.
2. Unreasonable measurement values;
free chlorine values < 0.3 ppm and > 3.0 ppm
- check the chlorine values using photometric equipment
3. High levels of cyanuric acid in the pool water - check using photometric
equipment.
Dilute the pool water with tap water if necessary.
4. Electrode or connection fault - check connections, clean electrodes or
replace them.
High and low values during operation
- calibrated value not stable.
Dosing set too high or too low. Adjust dosing based on pool volume and
circulation speed.
Check that the water ow through the tting is even.
Check the condition and connections of the electrodes.
Underpressure in return hose Press the Flow button (F, see Figure 6), open the Adjuster Screw (H, see
Figure 7) until the red LED (High) comes on. Then cut the ow using ball
valve L2 (see Figure 1) carefully until the green LED (ow OK) comes on.
Reservations
We accept no liability for printing errors. We reserve the right to make changes to MiniMaster technical specications or its manual.
Colour differences may occur due to technical factors in the printing process.