Henden HSMC15 Operating instructions

IMPORTANT
Please read carefully
Please pass these instructions on to the operator of this equipment
INSTALLATION &
OWNERS MANUAL
WARNING:
Failure to follow
these instructions
and comply with all
applicable codes
may cause serious
bodily injury and/or
property damage.
The installation of
this product should
be carried out by a
person knowledgeable
in swimming
pool plumbing
requirements following
the installation
instructions provided
in this manual.
Henden Salt and Mineral Chlorinator
HSMC15, HSMC25, HSMC35

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Contents
Henden Salt and Mineral Chlorinator
INSTALLATION
1. INSTALLATION INSTRUCTIONS 7
1.1 Installing the power supply 7
1.2 Installing the cell 7
1.3 Connecting the electrolytic cell to the
power supply 8
1.4 Connecting the flow switch to the cell housing 8
1.5 Pre-start up procedure 9
OWNERS MANUAL
IMPORTANT INFORMATION ABOUT YOUR CHLORINATOR 10
2. OPERATION OF YOUR HENDEN SALT AND
MINERAL CHLORINATOR 11
3. CONTROL PANEL 11
3.1 Layout 11
4. INITIAL START-UP 11
5. TYPICAL (EVERYDAY) START-UP 16
6. HENDEN SALT AND MINERAL CHLORINATOR FEATURES 17
6.1 Controlling chlorine output 17
6.2 Automated timers 18
6.3 Activating cover mode 21
6.4 Activating boost mode 23
6.5 Activating spa mode 25
6.6 Activating spa mode and cover mode simultaneously 26
6.7 Activating winter mode 27
6.8 Low flow alarm 28
6.9 Add salt alarm 28
6.10 Low salt cut-out alarm 29
6.11 Add salt alarm and low flow alarm 29
6.12 Overriding clock setting 30
6.13 Overriding date setting 31
6.14 Overriding language setting 32
6.15 Overriding time format setting 34
6.16 Display alarm history 35
7. MAINTENANCE OF POWER SUPPLY 36
8. MAINTENANCE OF THE ELECTROLYTIC CELL 36
8.1 To clean the HSMC cell 37
8.2 Re-Installing cell after cleaning or replacement 37
8.3 Safety device 38
9. DAY TO DAY OPERATION 38
9.1 Stabiliser 38
9.2 ph and total alkalinity 38
9.3 TDS levels 38
9.4 Running times 39
10. CHLORINE PRODUCTION 39
10.1 “Shock” treatment 39
10.2 Chlorine types and comparisons / Max pool size 39
11. GENERAL INFORMATION 40
11.1 Pool water chemistry instructions 40
12. TROUBLE SHOOTING 40
13. HENDEN™REPAIR OR REPLACEMENT GUARANTEE 42

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INSTALLATION
Congratulations! You are now the proud owner of a new Henden Salt and Mineral Chlorinator. Please read all information
in this manual carefully before installing or operating your Henden Salt and Mineral Chlorinator.
PACKING LIST
Included with your system are the following items. Please check the contents of the box carefully prior to attempting to
install the system:
• Power Supply with cell lead
• U-shaped electrolytic housing & cell
• Cell blanking cap & o-ring
• 2 x Barrel unions including nut, tail & o-ring
• 2 x Reducing bushes
• Quick reference guide
• Power lead
• Mounting screws & plugs pack
ATTENTION: Your Henden Salt and Mineral Chlorinator is not intended for use by young children or
infirm persons without supervision. Please ensure that young children are supervised to ensure that
they do not play with the Henden Salt and Mineral Chlorinator system.
ATTENTION: Power connections and wiring must be carried out by an authorised electrician.

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IMPORTANT SAFETY
INSTRUCTIONS
• To minimise the risk of gas build-up in the cell housing, you must ensure there is sufficient
water flow through the cell when the unit is on and producing chlorine.
• It is essential that your pool pump circulates sufficient water through the cell housing to
completely fill the cell housing with water during the chlorination process.
• Periodically check the paddle of the safety flow switch to ensure it is free to move back and
forth and that the lock nut is done up hand tight.
Diagram A
CORRECT OPERATION
WITH A PUMP RUNNING
ü
Diagram B
INCORRECT OPERATION
WITH A PUMP RUNNING
û

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COMMON TERMS
Algae
Microscopic forms of plant life which enter the pool via rain, wind and dust. There are numerous varieties – some are free
floating whilst others grow on walls and in cracks and come in different colours. Some are more resistant to chemical
treatment than others.
Bacteria
The germs that contaminate your pool. Introduced by swimmers, dust, rain storms and other elements.
Balanced water
The correct ratio of mineral content and pH level that prevents pool water from being corrosive or scale forming.
Chloramines
Compounds formed when chlorine combines with nitrogen from urine, perspiration, etc. Chloramines cause eye and skin
irritation, as well as unpleasant odours.
Chlorine demand
The chlorine required to destroy germs, algae and other contaminants in the pool.
Chlorine residual
The amount of chlorine remaining after chlorine demand has been satisfied. This is the reading obtained with your test kit.
Cyanuric acid
Also known as stabiliser or conditioner. It reduces dissipation of chlorine by direct sunlight.
Liquid acid
A chemical used to reduce the pH and total alkalinity in the pool water, and for cleaning Sanitiser cell.
ppm
An abbreviation for Parts Per Million, the accepted measurement of chemical concentration in swimming pool water.
1 ppm = 1 mg/L.

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1. INSTALLATION INSTRUCTIONS
1.1 Installing the power supply
Select a convenient, well-ventilated location within one metre of the filter equipment and mount the power supply vertically
onto a wall, or post at least as wide as the HSMC power supply itself. Henden recommends that the power supply shall not
be located within 3 metres of the pool water.
Plug the pump and chlorinator power supply into a suitable weatherproof power outlet/controller. Or, you can use the 3-pin
socket on the rear of the power supply to provide pump power.
The unit must be kept away from acid and other chemical storage areas. Acid and chemical vapours will corrode the electronics
inside the unit. The unit must also be kept away from heat sources. Good ventilation is necessary for correct operation.
Two self-tapping screws and wall plugs have been provided for fast and simple installation. Use a 6mm masonry drill bit
when fitting the power supply to a brick or concrete wall. When mounting to a post drill pilot holes and fit the screws
provided. The holes should be level and 164mm apart. Once the screws are in position simply hang the HSMC power
supply via the mounts on the back of the unit.
For adequate weatherproofing, the wall or post that HSMC is mounted to should be flat and at least as wide as the HSMC power supply.
200mm
Return to pool line
Suction Line
FILTER
PUMP
ACCESSORIES
230V POWER SUPPLY
1.2 Installing the cell
The HSMC cell should always by the last appliance in your system. Ensure the cell is installed after pumps, filters and any
heating appliances. To achieve best efficiency, the HSMC cell should be installed such that turbulent water is limited. Do not
install a 90° elbow closer than 200mm from the cell’s inlet barrel union. Isolation valves used when the equipment is located
below pool water level should also be installed no closer than 200mm from the inlet barrel union. This will assist laminar flow.

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1.3 Connecting the electrolytic cell to the power supply
The HSMC uses a reverse polarity electrolytic cell for low maintenance operation. The HSMC power supply is fitted with
a flexible lead terminated with the cell connectors built into a plastic moulding. The three in-line connectors are not
“polarity sensitive”.
Figure 1.3
NOTE: The HSMC cell is supplied with a paddle type flow switch, which is to be installed on the cell as shown below
and connected to the cell lead via the connector on the end of the cable.
NOTE: The flow switch must be mounted with the highlighted arrow on side of the switch pointing in the
direction of flow.
1.4 Connecting the flow switch to the cell housing
Ensure that the flow switch is installed into the cell housing.
Figure 1.4.1
Ensure the flow switch direction is correct (see page 5)
Figure 1.4.2
Fitted

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1.5 Pre-start up procedure
Before operating your Henden Salt and Mineral Chlorinator, please ensure the following quantity of pool salt has been
added to your pool.
• POOL SALT:
To raise salt
concentration by Salt required
ppm % 30,000L 40,000L 50,000L 60,000L 70,000L 80,000L 90,000L 100,000L
kg lbs kg lbs kg lbs kg lbs kg lbs kg lbs kg lbs kg lbs
1,000 0.1 30 66 40 88 50 110 60 132 70 154 80 176 90 198 100 220
2,000 0.2 60 132 80 176 100 220 120 265 140 309 160 353 180 397 200 441
3,000 0.3 90 198 120 265 150 331 180 397 210 463 240 529 270 595 300 661
4,000 0.4 120 265 160 353 200 441 240 529 280 617 320 705 360 794 400 882
5,000 0.5 150 331 200 441 250 551 300 661 350 772 400 882 450 992 500 1,102
6,000 0.6 180 397 240 529 300 661 360 794 420 926 480 1,058 540 1,190 600 1,323
• CHLORINE: For a new pool installation that has not been chlorinated, add sufficient Chlorine (liquid or granular)
to achieve a reading of 3 ppm (with a suitable test kit). Alternatively, run the Henden Salt and Mineral Chlorinator
continuously on BOOST MODE, for approximately 24 hours, or until a reading of 3 ppm is reached.
• STABILISER: It is essential that pool stabiliser be added and maintained at the rate of 25 - 50 ppm at all times (FOR
OUTDOOR POOLS ONLY). For ORP controlled systems the stabiliser level should be maintained between 15-25ppm.
Refer to Day to Day Operation section on page 38 for further information on pool chemistry.

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IMPORTANT INFORMATION
ABOUT YOUR CHLORINATOR
FACTORS THAT WILL IMPROVE THE
PERFORMANCE & LIFE OF YOUR HENDEN SALT AND MINERAL CHLORINATOR
PLEASE READ THIS BEFORE OPERATING YOUR CHLORINATOR
POOL BUILDERS: Please cover this information with your customer during the
new pool handover.
Sanitisers are a valuable piece of pool sanitising equipment and must be cared for to get the best
performance and life span.
There are THREE main factors that will damage your Henden Salt and Mineral Chlorinator and reduce
the life of the product. Please monitor the following factors in accordance with your installation &
operating instructions.
1. MAINTAIN RECOMMENDED TOTAL DISSOLVED SOLIDS (TDS) LEVELS
RECOMMENDED OPERATING RANGE: 4,000 - 6,000ppm
• Run the HSMC at the salt levels stated within this document and on the product to ensure
optimum sanitiser output and cell life.
• Operating this device at low salt levels will damage the cell and reduce its life.
• The control panel displays a red LED indicator warning when the TDS levels are low.
• If no action is taken to rectify the TDS levels, damage to the cell may result which will not be
covered under warranty.
2. MONITOR & MAINTAIN YOUR Henden HSMC CELL
The Henden Salt and Mineral Chlorinator has a “Reverse Polarity” cell.
• To keep your HSMC in the best possible condition, regular monitoring of the electrolytic cell is
recommended. The ‘cell’ is the clear plastic housing containing the plates.
• During the sanitisation process a white powdery calcium scale may naturally build up on the
titanium plates in the cell. Monitor the cell to prevent excessive scale build up. Excessive scale
build up will cause damage to your cell, and dramatically reduce its efficiency and lifespan.
• Reverse Polarity models have low maintenance cells that minimise scale build up.
• The control panel displays a red LED indicator warning when the cell requires cleaning.
• If calcium scale builds up please clean the cell, following the cleaning instructions provided
on page 37.
NEVER: Use concentrated acid to clean your cell.
NEVER: Leave the cell in cleaning solution for extended periods of time
NEVER: Use metal implements, scourers or brushes to clean your cell
3. BALANCED POOL WATER CHEMISTRY
• Salt TDS levels MUST be maintained at 4,000 - 6,000ppm for optimum performance
and lifespan
• Calcium hardness levels MUST be kept within the ideal range of 200 - 275ppm (for concrete
and tiled pools) and 100 - 225ppm (for other surfaces) to prevent excessive scale build up and
damage to equipment.
pH levels MUST be kept to ideal levels to prevent damage to equipment and pool surfaces,
and to obtain optimum chlorinator effectiveness.
• Total alkalinity and stabiliser levels must also be kept in an ideal range.
Note: Please refer to the POOL WATER CHEMISTRY chart on page 40 for more information.

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OWNERS MANUAL
2. OPERATION OF YOUR HSMC
CHLORINE OUTPUT is expressed as a percentage of the maximum output of the HSMC. Set the HSMC to the percentage
output required and the unit will automatically adjust the cell output to the set level. The HSMC is fitted with an electronic
control and warning system. This regulates the output of the HSMC to the pre-set maximum and changes cell polarity as
indicated by the “+” or “–” on the digital display. The polarity will alternate over a number of hours of chlorination time, not
necessarily pump-run hours.
3. CONTROL PANEL
3.1 Layout
100% – 09:29 AM
auto ON
Figure 3.1
Manual on/off
Menu up/down
Menu/setting select
Menu/setting cancel (go back)
Power indicator
(lit when HSMC on)
Alarm indicator
(flashes when alarm active)
Time out
(whenever device is left for 30 seconds without
input from user, settings are saved, and home
screen displayed)
4. INITIAL START-UP
Once the salt level in the pool is correct the unit may be switched on (refer to page 9).
Note: Once the unit starts there is a short time delay until the cell operates to ensure the filtration system
is primed with water.
• The first time the Henden Salt and Mineral Chlorinator is turned on, the following screen is shown on start-up:
HENDEN
V1.2.7 AU 15L
Figure 4.1
> This screen shows the version of software (ie v1.27 shown) and your model of HSMC (ie AU 15 shown, meaning HSMC15).

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• The display then automatically reverts to the following screen:
3. LANGUAGE
ENGLISH
3. LANGUAGE
ENGLISH
Figure 4.2
> This screen shows the language menu and the current language setting (ie English shown);
> The language setting can be changed by pressing the menu up/down buttons to scroll through available
languages;
> Press menu/setting select once your preferred language is displayed;
> If a mistake is made, the setting can be changed later.
• The display then automatically reverts to the following screen:
4. TIME FORMAT
12HR
Figure 4.3
> This screen shows the time format menu and the current time format (ie 12HR shown);
> The time format can be changed by pressing the menu up/down buttons to toggle between
12HR and 24HR formats;
> Press menu/setting select once your preferred time format is displayed;
> If a mistake is made, the setting can be changed later.
• The display then automatically reverts to the following screen:
1. CLOCK
07:34 PM
Figure 4.4
> This screen shows the clock’s current time (Figure 4.4 shows 07:34PM, having elected for 12 hour time format earlier);
> Initially the clock hours will be flashing;

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> The clock hours can be changed by pressing the menu up/down buttons to scroll to your chosen time;
> Press menu/setting select once your preferred clock hour is displayed;
> If a mistake is made, the setting can be changed later.
> Next the clock minutes will be flashing;
> The clock minutes can be changed by pressing the menu up/down buttons to scroll to your chosen time;
> Press menu/setting select once your preferred clock minutes is displayed;
> If a mistake is made, the setting can be changed later.
> Next the clock AM/PM will be flashing (if 12 hour time format chosen earlier. Otherwise, the display reverts
to date format menu);
> The clock AM/PM can be changed by pressing the menu up/down buttons to toggle between
AM and PM;
> Press menu/setting select once your preferred clock AM/PM is displayed;
> If a mistake is made, the setting can be changed later.
• The display then automatically reverts to the following screen:
2. DATE
01 JAN 2000
Figure 4.5
> This screen shows the date format menu and the current date (ie 01 JAN 2000 shown);
> Initially the date day will be flashing;
> The date day can be changed by pressing the menu up/down buttons to scroll to your chosen date day;
> Press menu/setting select once your preferred date day is displayed;
> If a mistake is made, the setting can be changed later.
> Next the date month will be flashing;
> The date month can be changed by pressing the menu up/down buttons to scroll to your chosen date month;
> Press menu/setting select once your preferred date month is displayed;
> If a mistake is made, the setting can be changed later.
> Next the date year will be flashing;
> The date year can be changed by pressing the menu up/down buttons to scroll to your chosen date year;
> Press menu/setting select once your preferred date year is displayed;
> If a mistake is made, the setting can be changed later.

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• The display then automatically reverts to the following screen:
TIMER 1
ON 06:00 AM
Figure 4.6
> The screen shows the ON-TIME of TIMER 1:
ncurrent ON-TIME of TIMER 1 is 6:00am (example assumes 12 hour time format chosen earlier).
> Initially the clock hours will be flashing;
> The clock hours can be changed by pressing the menu up/down buttons to scroll to your chosen time;
> Press menu/setting select once your preferred clock hour is displayed;
> If a mistake is made, the setting can be changed later;
> Next, the clock minutes will be flashing;
> The clock minutes can be changed by pressing the menu up/down buttons to scroll to your chosen time;
> Press menu/setting select once your preferred clock minutes is displayed;
> If a mistake is made, the setting can be changed later;
> Next, the clock AM/PM will be flashing;
> The clock AM/PM can be changed by pressing the menu up/down buttons to toggle
between AM and PM;
> Press menu/setting select once your preferred clock AM/PM is displayed;
> If a mistake is made, the setting can be changed later;
> Press menu up/down buttons
• The display then automatically reverts to the following screen:
TIMER 1
OFF 09:00 AM
Figure 4.7
> The screen shows the OFF-TIME of TIMER 1:
ncurrent OFF-TIME of TIMER 1 is 9:00am (example assumes 12 hour time format chosen earlier).
> Initially the clock hours will be flashing;
> The clock hours can be changed by pressing the menu up/down buttons to scroll to your chosen time;
> Press menu/setting select once your preferred clock hour is displayed;
> If a mistake is made, the setting can be changed later;
> Next, the clock minutes will be flashing;
> The clock minutes can be changed by pressing the menu up/down buttons to scroll to your chosen time;
> Press menu/setting select once your preferred clock minutes is displayed;
> If a mistake is made, the setting can be changed later;
> Next, the clock AM/PM will be flashing, assuming 12 hour format chosen earlier;
> The clock AM/PM can be changed by pressing the menu up/down buttons to toggle
between AM and PM;
>Press menu/setting cancel (go back) button once your preferred OFF-TIME for TIMER 1 is displayed;
> If a mistake is made, the setting can be changed later;

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• The display then automatically reverts to the following screen:
TIMER 2
ON 05:00 PM
Figure 4.8
> The screen shows the ON-TIME of TIMER 2:
ncurrent ON-TIME of TIMER 2 is 5:00pm.
> Initially the clock hours will be flashing;
> As before, use the menu up/down buttons to elect your respective times and press menu/setting select
to enter through the menu.
> If a mistake is made, the setting can be changed later;
• The display then automatically reverts to the following screen:
TIMER 2
OFF 10:00 PM
Figure 4.9
> The screen shows the OFF-TIME of TIMER 2:
ncurrent OFF-TIME of TIMER 2 is 10:00pm.
> Initially the clock hours will be flashing;
> As before, use the menu up/down buttons to elect your respective times and press menu/setting select
to enter through the menu.
> If a mistake is made, the setting can be changed later;
• The display then automatically reverts to the HOME screen:

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100% – 07:31 AM
AUTO ON
Figure 4.10
> This screen shows the:
ncurrent chlorine output setting (ie 100% shown);
ncurrent time setting;
ncurrent power status (ie ON shown).
5. TYPICAL (EVERYDAY) START-UP
Note: Once the unit starts there is a short time delay until the cell operates to ensure the filtration system is
primed with water.
• Every time the HSMC is turned on, the following screen is shown on start-up:
HENDEN
V1.2.7 AU 15L
Figure 5.1
• The display then automatically reverts to the HOME screen:
100% – 07:31 AM
AUTO ON
Figure 5.2

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> This screen shows the:
ncurrent chlorine output setting (ie 100% shown);
ncurrent time setting;
ncurrent power status:
AUTO ON: (ie as shown above) indicates the HSMC is currently operating within the ON-TIME of either TIMER 1,
or TIMER 2;
AUTO: indicates the HSMC is powered but is within the OFF-TIME of both TIMER 1, and TIMER 2;
MANUAL ON: indicates the HSMC is currently operating, having been manually overridden;
MANUAL OFF: indicates the HSMC is powered but is not currently operating, having been manually overridden.
6. Henden Salt and Mineral Chlorinator FEATURES
6.1 Controlling chlorine output
65% – 09:35 AM
AUTO 0N
Figure 6.1
The cell run time is referred to as “cell duty cycle”.
The CHLORINE OUTPUT controls the time that the cell is producing chlorine. This is a percentage of total time that the HSMC is
on. If the HSMC cell is producing, it’s cell current is 100%, unless otherwise altered (see sections WINTER MODE page 27.
For example:
• If the HSMC is on for 8 hours per day, and the CHLORINE OUTPUT is set to 50%: the HSMC cell duty cycle is only 4
hours, of that day;
• If the HSMC is on for 8 hours per day, and the CHLORINE OUTPUT is set to 25%: the HSMC cell duty cycle is only 2
hours, of that day.
To adjust the CHLORINE OUTPUT:
70% – 09:35 AM
CHLORINE OUTPUT
Figure 6.2

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> Press the menu up/down buttons to scroll to your chosen CHLORINE OUTPUT;
> The setting will change the cell duty cycle by 5% increments;
> Press menu/setting select once your preferred CHLORINE OUTPUT is displayed;
> This will then take you back to the HOME screen.
6.2 Automated timers
The HSMC has two separate timers available for automated operation. This is ideal if looking to run the pool a few hours in the
morning, then a few hours in the afternoon. It is important to ensure that the timers do not overlap as this may create confusion
when the timer turns on and off.
To adjust ON-TIME of TIMER 1:
70% – 09:35 AM
CHLORINE OUTPUT
Figure 6.3
> From the HOME screen, press menu/setting select;
> The display will show this screen:
MODE
1. TIMER 1
Figure 6.4
> From this screen, press menu/setting select to enter TIMER 1 menu;
TIMER 1
ON 06:00 AM
Figure 6.5

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> The screen shows the ON-TIME of TIMER 1:
ncurrent ON-TIME of TIMER 1 is 6:00am (example assumes 12 hour time format chosen).
> Initially the clock hours will be flashing;
> Use the menu up/down buttons to change the time values. Press the menu/setting select
to enter through the menu.
> If a mistake is made, the setting can be changed later;
>Press menu/setting cancel (go back) button once your preferred ON-TIME for TIMER 1 is displayed. This will take
you back to the HOME SCREEN.
To adjust OFF-TIME of TIMER 1:
70% – 09:35 AM
CHLORINE OUTPUT
Figure 6.6
> From the HOME screen, press menu/setting select;
> The display will show this screen:
MODE
1. TIMER 1
Figure 6.7
> From this screen, press menu/setting select to enter TIMER 1 menu;
TIMER 1
ON 06:00 AM
Figure 6.8

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> Using the menu up/down buttons scroll to the OFF-TIME of TIMER 1.
TIMER 1
OFF 09:00 AM
Figure 6.9
> The screen shows the OFF-TIME of TIMER 1:
ncurrent OFF-TIME of TIMER 1 is 9:00am (example assumes 12 hour time format chosen).
> Initially the clock hours will be flashing;
> Use the menu up/down buttons to change the time values. Press the menu/setting select
to enter through the menu.
>Press menu/setting cancel (go back) button once your preferred OFF-TIME for TIMER 1 is displayed.
This will take you back to the HOME SCREEN.
To adjust both ON-TIME and OFF-TIME of TIMER 2:
70% – 09:35 AM
CHLORINE OUTPUT
Figure 6.10
> From the HOME screen, press menu/setting select;
> The display will show this screen:
MODE
1. TIMER 1
Figure 6.11