Zodiac EL-24 User manual

EL-24
INSTALLATION AND
OPERATING INSTRUCTIONS

INST 473 ZODIAC EL24 Salt Chlorinator V10.18
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INDEX
General Overview .............................................................................................. 3
Chlorinator Control Installation........................................................................... 3
Cell Installation................................................................................................... 4
Pool Preparation ................................................................................................ 5
Programming ..................................................................................................... 5
Chlorine Output.................................................................................................. 6
User Mode ....................................................................................................... 6
Setting The Right Chlorine output And Filtration Time....................................... 7
General Operation/Pool Chemistry .................................................................... 7
Setting the right Chlorine Output and Filtration Time......................................... 7
Chlorinator Maintenance and Troubleshooting .................................................. 8
Maintenance of Your
Chlorinator………………………………………………………………………………………………………
…………………9
Troubleshooting ............................................................................................... 10
Warranty….. ..................................................................................................... 11

INST 473 ZODIAC EL24 Salt Chlorinator V10.18
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GENERAL OVERVIEW
Congratulations! You have purchased an Zodiac EL-24 Salt Chlorinator. Please read the
instructions carefully and your purchase will provide you with years of trouble free use.
Your Zodiac Chlorinator works by converting some of the salt (sodium chloride) in your pool into
chlorine which starts to destroy algae and bacteria and sanitises your pool. As part of the process,
the chlorine is converted back into salt and hence salt is not consumed.
Your Chlorinator control has many features which ensure simple operation of your chlorinator and
Filtration system.
The EL-24 Chlorinator has an internal electronic time clock designed to operate the Filtration pump
up to 2 separate time periods each day. The control has a non replaceable backup power source
which is designed to maintain timer setting memory in the event of an infrequent and short power
interruption.
WARNING: This appliance is not intended for use by persons including young children or
infirm persons with reduced physical, sensory or mental capabilities, or lack of experience
or knowledge, unless they have been given supervision or instruction concerning use of the
appliance by a person responsible for their safety.
Please ensure that young children are supervised to ensure that they do not play with the
pump or chlorinator.
To avoid a safety hazard, the supply cord if damaged, must only be replaced by Zodiac, or its
service agent or a suitably qualified person.
CHLORINATOR CONTROLLER INSTALLATION
The EL-24 chlorinator controller has a Rating of IP23 enabling it to be installed outdoors.
Regulations require that the control is not allowed to be located within 3.5 metres of the pool
water.
The chlorinator controller should be installed in a well ventilated position ideally away from direct
sunlight. Ensure that the unit is not located near pool chemicals as fumes may damage the control.
When installing the controller on a post, first attach a flat waterproof panel at least 300mm wide by
500mm long. Make sure the controller is located centrally on the panel and sits flat.
Plug the 3 pin plug into a suitable weatherproof outlet and then plug the pump into the 3 pin socket
in the chlorinator controller.
Note: The pump current rating must not exceed 8 amps.

INST 473 ZODIAC EL24 Salt Chlorinator V10.18
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CELL INSTALLATION
The Chlorinator Cell should be the last piece of equipment installed on the pipe work just prior to the
return to the pool. However if valves are installed between the Chlorinator and the pool outlet, it is
essential that they cannot deadhead the pump. If the pressure in the cell exceeds 250kPa and/or
the water temperature exceeds 40 degrees Celsius, the cell may fail.
WARNING: Never install the cell before the pump or heater
The Cell MUST be installed with the barrel unions underneath (water connections pointing
downwards) and the cell should be horizontal. The cell is suitable for 40mm pipe only. Use high
pressure PVC pipe and glue into the barrel union tails. Make sure that the ‘O-rings are correctly
fitted and the unions are tightened firmly.
Direction of flow through the Cell is critical –unit must be plumbed with the water entering
the cell at the end closest to the terminal connections
WARNING: It is essential that pipe work and equipment do not allow gases generated
from the cell to collect and build up.
WARNING: Cell must be installed horizontally with water connections pointing
downwards –this creates a safety gas trap. Installation in any other way
may cause explosion, injury or death.
WARNING: Cell must be installed in the return pipework to the pool. Always install after
filter, gas heater, and solar heater or heat pump connections.
WARNING: DO NOT install isolation valves
on inlet or outlet of cell.
Once the Cell is located, connect the black multi-
core cable to the cell. All terminal posts and cell
cable connectors are colour coded, ensure the
correct colours are connected. Ensure that the
connectors are seated firmly and correctly.

INST 473 ZODIAC EL24 Salt Chlorinator V10.18
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POOL PREPARATION
The recommended salt level for the EL-24 Salt Chlorinator is 6,000ppm. The chlorinator requires
between 4000ppm and 6000 ppm of salt dissolved into the pool water. The level of salt will depend
on water temperature, but if a level of 6000 ppm dissolved salt is allowed for, your chlorinator will
always be able to produce the maximum level of chlorine. We recommend you add 6 kgs of salt for
every 1000 litres of water (a typical pool of around 50,000 litres requires 300kg of salt).
Salt should always be added at the shallow end of the pool and allowed to dissolve. Running the
pump will mix the water and speed the dissolving process.
WARNING: Never add salt to the skimmer box!!
NOTE: Plug the pump directly into a power outlet (bypass the chlorinator) and run for 8-10 hours to
ensure the salt is dissolved prior to running the chlorinator.
When the salt is dissolved, connect the pump to the chlorinator and run it on maximum chlorine
output. Check that low salt is not indicated on the screen. If it is, check again in 24 hours. If the
low salt indicator still persists, have the salt level checked by your local pool shops and ensure it is
increased to 6000 ppm.
PROGRAMMING
Setting Current Time/Day
Select Off
(a) Press the MENU button and screen should display CLK. Press ENTER
(b) Press ENTER and the hour digit will flash. Use up and down arrows to adjust.
(c) Press ENTER to change to minutes and set.
(d) Press ENTER and select AM or PM
(e) Press MENU to save
Setting Timers
Your Chlorinator has 2 timers enabling you to set different periods in which your chlorinator/pump
will operate. Timers are set by entering a start time and an off time. To set timers, do the following:
(a) Press the MENU button twice and screen should display TMR. Press ENTER
(b) Use up and down arrows to adjust start time for TIMER1. Press ENTER
(c) Use up and down arrows to adjust the off time for TIMER 1. Press ENTER.
(d) Repeat for TIMER 2
Programming Recommendations
Zodiac recommend that you use two timers, one for the morning and one for the evening and
typically for periods of 2-5 hours for each (depending on pool size and season). Your chlorinator is
most effective if running in the early morning or evening when it is cooler (strong sunlight consumes
more chlorine). As a factory default, the control is set to come on at 08:00am and 04:00pm both for
periods of 4 hours.
CHLORINE OUTPUT
To adjust the chlorine output:
(a) Use Increase/Decrease arrows for setting the chlorine output level of the chlorinator. The
chlorinator output can be set from levels 1 through to 8.
(b) Chlorine Output display shows the level set

INST 473 ZODIAC EL24 Salt Chlorinator V10.18
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USER OPERATION
The user mode buttons enable you to select and to automatically or manually control the
chlorinator/pump. Functions are as follows:
(a) POOL MODE:
Auto - Running The chlorinator/pump will run according to how you have set the
timers
Manual -Running The chlorinator/pump will run continuously.
Manual - Stopped The chlorinator/pump will stay off continuously.
Maximum efficiency will be achieved from you chlorinator at the following levels:
Water temperature 15 Degrees –Salt level required is 6000 ppm
Water Temperature 25 Degrees –Salt level required is 4,100 ppm
FAULT CODES
The User Display can indicate the following fault codes;
NO F –No flow indication
LO S –Low salt indication
Refer to troubleshooting table at the end of this manual for actions to correct these errors.
SETTING THE RIGHT CHLORINE OUTPUT AND FILTRATION TIME
Your EL-24 Chlorinator must be run every day to ensure that your pool is correctly sanitised. As the
sun dissipates chlorine, running times are higher in the summer compared to the winter. Zodiac
recommend that you initially run you chlorinator at maximum output for the first few days, then
adjust as required.
Summer
You should set your Chlorinator to operate for 8 to 10 hours per day. Ideally, run it for 4-5 hours in
the morning (say 8-12pm) and 4-5 hours in the evening (say 6.00-11pm).
In extremely hot weather it may be necessary to extend the running time if you find that the free
chlorine level is too low.
To prevent consumption of chlorine by sunlight, try adding Cyanuric Acid as recommended by your
local pool professional. Additional benefit will be gained by operating your chlorinator and pump
into the evening when the strong sunlight has abated.
Chlorine is most effective when the pH of your pool water is 7.4. The electro-chemical process of
the chlorinator, (change salt into chlorine) will automatically raise the pH of your pool water, so it is
very important to check your pH weekly and adjust as necessary.
Winter
You should set your Chlorinator to operate for 6 to 8 hours per day. Again, running it in the morning
and evening is preferable.
Checking Chlorine Level
Ideally, check your chlorine level after the morning operating period. The free chlorine residual level
should be somewhere between 1 and 3 parts per million. Increase or decrease the output of the
Chlorinator to get the right residual chlorine level. It may also be necessary to adjust the operating
period if you are running at minimum or maximum output.

INST 473 ZODIAC EL24 Salt Chlorinator V10.18
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STABILISER
As previously mentioned, sunlight rapidly dissipates the amount of free chlorine in your pool.
Chlorine stabiliser greatly reduces this effect. Without stabiliser, you may need to run your
Chlorinator and filtration system up to 16 hours per day or longer.
Keep the Stabiliser reading between 30 and 60ppm.
pH Level
You should keep you pH level between 7.0 and 7.4 for fibreglass pools and 7.2 to 7.6 for other
pools.
Total Alkalinity
The ideal range is between 80 and 120 ppm.
Salt Level
Although salt is not consumed by the chlorinator, salt is lost during backwashing, and when your
pool overflows due to rain or splashing. The correct salt level is important to cell life and the
effective operation of your chlorinator. Salt level should be maintained around 6,000ppm but should
never be allowed to fall below 4,000ppm.
A typical pool of around 50,000 litres requires 300kg of salt to initially set-up the pool to 6,000ppm.
A low salt level warning is indicated on your EL-24 Chlorinator if the salt level drops. If Low Salt is
indicated, check again in 24 hours and then if it is still indicated, add two 25kg bags of salt to the
shallow end of your pool. Run the filtration system for approx. 6 hours to help mix the salt in the
pool. It can take up to a day for the salt to fully dissolve.
If the low salt light is still on, then you should get your pool water tested. If the Salinity is above
6000ppm then you may need to have your Chlorinator checked.
Warning: Never add salt directly to the skimmer box. This practice should be avoided as it
allows very high concentrations of salt to be passed through your filtration and other pool
equipment.
CHLORINATOR MAINTENANCE AND TROUBLESHOOTING
If the supply cord is damaged, it must be replaced by Zodiac or its service agent or a similarly
qualified person in order to avoid a hazard.
Warning: Operating the chlorinator with less than 3000 ppm of dissolved salt in the water
may cause damage to the cell and will void the warranty. Never start the chlorinator, until
the correct quantity of salt has been added and dissolved in your pool water.
CELL MAINTENANCE
Your EL-24 Chlorinator has an automatic cleaning feature that under normal conditions, will keep
the cell plates clear of deposits of salt and calcium.
The cell has a negative charge sensor that monitors the flow and salt levels of the water. This
sensor is designed to be fail safe. As it is negative charge deposits of calcium or other debris may
be deposited on it and cause it to indicate a low salt or no flow condition. Should a low salt
condition be indicated, have your salt level checked at your local pool shop. If the low salt condition
persists, or a no flow condition is indicated when the supply pump is operating, you may need to
manually clean your chlorinator Cell.

INST 473 ZODIAC EL24 Salt Chlorinator V10.18
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CELL CLEANING INSTRUCTIONS:
-Close applicable valves
-Disconnect the chlorinator from the mains by removing the 3 pin plug
-Disconnect the cell wires
-Undo the barrel nuts connecting the cell to your filtration system
-Turn the cell upside down (inlet and outlet on top) and fill the cell with a mix of 1 part
Hydrochloric acid to 10 parts water and leave standing for a few minutes. As an
alternative, you may use an approved commercial Cell cleaning solution
-Repeat if necessary and then rinse well in clean water
-Re-install the cell ensuring o-rings are correctly located and barrel nuts are tightened to
prevent leaks
-Re-connect cell wires ensuring all connections are in the proper colour coded connecter
-Return all valves to their normal positions, re connect power to the chlorinator and turn
on at power point.
WARNING: Follow safety instructions provided with the Hydrochloric acid or cleaning
solution. When handling Hydrochloric Acid, the use of eye protection, mask and gloves are
highly recommended. Extreme caution should be taken whenever handling Hydrochloric
Acid or Cell Cleaning Solution.

INST 473 ZODIAC EL24 Salt Chlorinator V10.18
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MAINTENANCE OF YOUR CHLORINATOR
Maintenance Schedule: Your new product incorporates moving parts and withstands high
velocity water with chemicals in it. Some of these parts will wear in the normal course of
use and require regular checks and maintenance. Performing these checks and
maintenance will identify parts that have worn and require repair/replacement before further
serious damage is sustained. A small amount of regular care and attention to your pool
equipment will help ensure long life and trouble free performance.
To protect against extremes of temperature, your unit is vented to allow expensive
electronics to cool. Ants and some insects are often attracted to the warmer, dry
environment inside the enclosure. We recommend that, with power turned off, you spray a
surface insecticide on the surfaces surrounding the control to prevent ant and insect
ingress. Repeat every three months or as necessary.
Timing
Maintenance Check
Service action (if required)
Fortnightly
Check cell for calcium build up
Check water chemistry
Check cable connections to cell
Soak electrode in mixture of 10
parts water to 1 part acid. Use a
soft brush only if required
Balance pH in pool and adjust
output of unit to ensure
satisfactory production of chlorine
Ensure no water contact is
occurring with pins
Three Monthly
Check cell connections for leaks
Check for insects/ants
Isolate Pump, turn power off, clean
and grease O rings or replace if
necessary
Spray a surface insecticide on the
surfaces around the unit to prevent
ant and insect ingress.
Six Monthly
Check chlorine levels and pump
operating hours
Prevent insect ingress to controller
Adjust timer and output depending
on demand for current season.
Turn controller off, use an insect
spray and spray onto walls around
controller. Do not spay directly into
unit.
Important note: Regular maintenance is important to ensure long life and trouble free performance
of your pool equipment. If unable to perform the maintenance yourself, contact your local Zodiac
office who will arrange a trained service technician to perform the maintenance for you.

INST 473 ZODIAC EL24 Salt Chlorinator V10.18
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TROUBLESHOOTING
Your EL-24 Chlorinator has diagnostic and safety features to make it easy to maintain your system.
The table below summarises potential faults and their causes.
Fault Indication
Potential Cause
Remedy
No Flow
Pump turned off/disconnected or
valves closed
Blue wire disconnected from cell
Ensure valves/pump on
Connect Blue sense wire to cell
Low salt
Salt level in pool has dropped too low
Pool water temperature is low
Cell has calcified
Cell has failed
Take sample of water to pool shop
and check salt level –add salt as
recommended.
Add salt and turn chlorinator
output down until the water is
warmer
Clean cell
Call for Service
Display blank
No Power to Controller
Fuse blown
Plug in controller and ensure
mains power available
Have a service technician replace
fuse (3 amp slow blow)
Low/No chlorine
in pool
Cables not connected to cell
Timer period too short
Chlorine output level too low
Filter needs backwashing
Ph too high
Pool stabiliser (cyanuric acid) too low
Salt level too low
Connect cables
Increase timer period –particularly
in summer
Increase chlorine output
Backwash filter
Balance pH level to 7.4 –7.6
Increase Stabiliser between 30
and 60 ppm
Increase salt to above 6000 ppm
Clock loses time
when mains
power removed
Battery life expired
Call a technician

INST 473 ZODIAC EL24 Salt Chlorinator V10.18
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SPARE PARTS
ITEM No
DESCRIPTION
PART NUMBER
QTY
1
LABEL-PART OF LABEL575
LABEK575
1
2
BOLT
880901
1
3
SPRING WASHER
886900
1
4
FLAT WASHER
885900
1
5
TRANSFORMER
70304
1
6
SCREW
40233
8
7
POWER PCB
72501
1
12
PLUG BASE 3 PIN
20026
1
9
BACK PANEL
1112875
1
10
WALL MOUNT BRAKET
1112877
1
11
SCREW
40340
6
12
PLUG BASE 3 PIN
20026
1
13
HEYCO CORD GRIP –POWER CORD
20008
1
14
HEYCO CORD GRIP- CELL CORD
20028
1
15
SCREW
40340
6
16
SCREW FOR USER PANEL
39-52-02
4
17
USER PCB
72501
1
18
COVER
78946
1
19
LABEL PART OF LABEL575
LABEL575
20
LABEL PART OF LABEL575
LABEL575
NOT SHOWN
CELL CABLE
703012
1
NOT SHOWN
POWER CORD
350029
1
NOT SHOWN
EARTH WIRE
703011
1
NOT SHOWN
ACTIVE NEUTRAL WIRES
78771
1
NOT SHOWN
LABEL- EARTH
LABEL28
1
NOT SHOWN
RIVETS
HSP171
2
NOT SHOWN
EARTH TAB
78750
1

INST 473 ZODIAC EL24 Salt Chlorinator V10.18
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For full warranty terms and conditions and to register your
warranty, simply visit www.zodiac.com.au/warranty and
complete your details. Or scan the QR code and be taken
directly to the registration page
Zodiac is a registered trademark of Zodiac Group Australia Pty Ltd
ABN 87 002 641 965
ZODIAC CUSTOMER SERVICE CENTRE
Zodiac Group Australia
219 Woodpark Rd, Smithfield,
NSW. 2164 Australia
Tel; 1300 763 021
Fax; 1300 781 688
Email; [email protected]
www.zodiac.com.au
Due to constant develpments and improvements,
specifications may change without notice.
Improper use could affect performance and void warranty
©Copyright Zodiac Australia Ltd 2018
Record your Equipment details here for quick reference:
Model No.: ____________________________
Serial No.: ____________________________