fluidra Astralpool VX7T User manual

DEVICELABEL
VX7T Salt Chlorine Generator
Controls Bacteria and Algae in Swimming Pool and Spa Water
For Domestic Use.
A maximum of 96 000 L of water can be treated with one VX7T Salt Chlorine Generator.
Maximum daily output of hypochlorous acid equivalent to 0.48 kg/day output of free available chlorine.
For swimming pools, a range of 1-3 ppm of free available chlorine must be maintained. For spas, a range of 3-5
ppm of free available chlorine must be maintained.
READ THE LABEL AND OPERATING MANUAL BEFORE USING
KEEP OUT OF REACH OF CHILDREN
REGISTRATION NO. 31187 PEST CONTROL PRODUCT ACT
WARNING: Operating the VX7T Salt Chlorine Generator without water flow through the cell can cause a build-
up of flammable gas which can result in FIRE OR EXPLOSION.
WARNING: Do not use this device with bromide products.
NOTICE TO USER: This pest control product is to be used only in accordance with the directions on the label. It
is an offense under the Pest Control Products Act to use this product in a way that is inconsistent with the
directions on the label.
Fluidra Group Australia PTY LTD
219 Woodpark Road
Smithfield, NSW 2164
Australia
Public Enquiries:
RBF International Ltée
780, Rue Nobel
Saint-Jérôme (Québec) Canada J7Z 7A3
450 438-4416

REPLACEMENT CELL LABEL
Astral VX7T Electrolysis Cell
Replacement cell for the VX7T Salt Chlorine Generator
REGISTRATION NUMBER 31187 PEST CONTROL PRODUCTS
ACT.
This cell must only be used on this model of chlorine generating device.
Read the Label andthe Installation and Operation Manual for the VX7T Salt
Chlorine Generator before using.
Fluidra Group Australia PTY LTD
219 Woodpark Road
Smithfield, NSW 2164
Australia
Public Enquiries:
RBF International Ltée
780, Rue Nobel
Saint-Jérôme (Québec) Canada J7Z 7A3
450 438-4416

Controls Bacteria and Algae in Swimming Pool and Spa Water
DOMESTIC
INSTALLATION/OPERATION MANUAL
REGISTRATION NO. 31187 PEST CONTROL PRODUCTS ACT
KEEP OUT OF REACH OF CHILDREN
READ THE LABEL AND OPERATING MANUAL BEFORE USING
SAVE THESE INSTRUCTIONS
Listed to UL 1081 Standard for Safety for
Swimming Pool
Pumps, Filters, and Chlorinators; and CSA C22.2 No 218.1
Standard for Spas, Hot Tubs, and Associated Equipment
Fluidra Group Australia PTY LTD
219 Woodpark Road
Smithfield, NSW 2164
Australia
Public Enquiries:
RBF International Ltée
780, Rue Nobel
Saint-Jérôme (Québec) Canada J7Z 7A3
450 438-4416
Rev. J
VX7T Salt Chlorine Generator
OWNERS MANUAL

VX7T Salt Chl orine Gener ato r
It is said that all life evolved from the sea and that salt water makes up
70% of our bodies, so it's little wonder we find salt water the most natural
medium to swim in.
It's one reason w hy salt chlorinators are now the
accepted standard for pool sanitizing.
However, it's not the only reason. With
AstralPool's
VX7TSalt Chlorine Generator you also get a
benchmark on control, convenience and reliability.
Tobe accurate, salt or minerals don't sanitize
the
pool, chlorine does. Salt or minerals in the form of
Magnesium Chloride, Potassium Chloride or Sodium
Chloride when dissolved into your pool water is
converted by the VX7T Salt Chlorine Generator into
chlorine which sanitizes your pool. The salts or
minerals, in roughly the same solution as a tear drop,
passes through the electrolytic plates in the VX7T
Salt Chlorine Generator cell to form chlorine which
prevents bacteria and algae from forming. What a
nice solution-particularly when some of these
minerals and salts can be good for your family just by
being in your pool water. The result is soft feeling
water and happy swimmers.
Control
Manual dosing with liquid or granular chlorine
can
be more hazardous. Over-dosing can cause eye
irritation, itchy skin and a strong chlorine odour. The
VX7T Salt Chlorine Generator continually generates
chlorine at the level you require.
Convenience
The easy to use touch pad enables complete
control
of your pump and sanitizer system. Although
the VX7T Salt Chlorine Generator is easy to use, it's
packed full of features making your swimming pool
a pleasure to own and use. Chlorine output, Pool or
Spa selection, filter cleaning, time of operation, and
additional run times are all selected and information
is provided on the large liquid crystal display.
Intelligent Self Cleaning
During operation, the anode in the electrolytic
cell
attracts a build-up of calcium and other debris
which requires periodic cleaning. Most chlorinators
reverse the polarity to the cell, w hich in turn releases
the residue of calcium and debris on the anode.
The intelligent VX7T Salt Chlorine Generator
analyses the output setting to optimise the polarity of
the electrolytic cell. By minimising the number of
reversals ensures the cell is clean and significantly
extends the life of your chlorinator.
Pool or Spa
Selection
When isolating your spa from the
swimming
pool, demand for sanitizer is greatly reduced. It's
simple really, while spa water is warm and requires
sanitizer to kill and prevent the growth of bacteria
and algae, it's comparatively small volume means it
only needs a fraction of the sanitizer that your pool
requires. One touch of the "Spa" button on the
VX7T Salt Chlorine Generator and your sanitizer
output is automatically reduced to suit the demands
of your spa. Why is this important? Excessive
sanitizer is unpleasant, causing itching skin,
bleached swimwear and damaging heaters, pumps
and interior finishes in your spa or pool. Just
another way the VX7T Salt Chlorine Generator
looks after your family.
Filter
Backwash Timing
Sand Filters require regular backwashing to
release
the entrapped dirt and debris. The VX7T Salt
Chlorine Generator has a very smart button that
operates the pump
for one, two or three minutes, ensuring your filter
is backwashed for the correct period and turns off
the electrolytic cell, preventing excessive build- up
of sanitizer and by-products during the backwash
process. This feature also ensures that the pump
cannot accidently be left running and empty the
pool, requiring expensive top-up water.

Extended Operation
Use m enu function to select
extended operation and
your VX7T Salt Chlorine Generator will automatically
extend its operating hours to allow for additional filtration
and sanitation during
Mineral Salts
The VX7T Salt Chlorine Generator is suitable for use
with pool salt or AstralPool's unique AcquaTherape
Minerals which give the pool water a softer feel and help
prevent staining and calcification.
Integration
The VX7T Salt Chlorine Generator can
be integrated with the
hot weather and heavy bather load periods. At an AstralPool Viron Connect Pool and Spa
Automation
automatically determined time, the VX7T Salt Chlorine System.
You've heard of home automation? When
G e n e r a t o r will then revert to normal installed with the (optional) Viron Connect you
gain
time clock operating hours saving you the total control of all your pool
equipment, chlorinator,
inconvenience of manually changing operating heater, spa jets, waterfalls and pool lighting
from
modes.
inside your home. Program your favourite setting
into
the Viron Connect to make pool and spa ownership
e asy and pleasurable f or the whole family.
Warranty
The VX series salt chlorine generators are available in 4
different sizes with built-in time clock ( select models)
which can be disabled when connecting to an external
time clock system. Each chlorinator is covered by a 5 year
warranty on the cell and 5 year pro rata on the power
pack.
To find out more visit fluidrausa.com
Model Chlorine
Output I hour
Pool
Volume
(litres)
Temperate
Climate
Max
Pump
Size
Max Current
Including
Pump
VX7T Salt Chlorine Generator 20g/h 96,000 8 amps 10 amps
*Temperate Climate Water Temperatures are lower and therefore inhibit algae and bacteria.
3

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INDEX{TABLE OF CONTENTS)
0.0 Important Safety Warnings ............................................................................................................................ 5-7
1.0 GeneralOverview .............................................................................................................................................................8
1.1 Chlorinator Control Unit Installation......................................................................................................................8
1.2 Cell Installation…………. ................................................................................................................................................. 9
1.3 PoolPreparation ........................................................................................................................................................... 10
2.1 User Panel .......................................................................................................................................................11
2.2 Programming ..............................................................................................................................................12
2.3 Chlorine Output ............................................................................................................................................................ 13
2.4 User Mode ..................................................................................................................................................................................................................... 14
3.0 Warnings Display………………………………………………………………………………………………………………………….15
3.1 Chlorine Outpu t L evel ............................................................................................................. ....16
3.2 Safety Backwash ....................................................................................................................................................... 17
3.3 Run Dry Safety Feature ………………………………………………………………………………………………………………….…….18
3.4 General Operation/PoolChemistry ................................................................................................................................... 18
3.5 Stabilizer
............................................................................................................................. 19
4.0 Chlorinator Maintenance and Troubleshooting ........................................................................................................... 20
4.1 Cell Maintenance ………………………………………………………………………………………………………………………….….20
4.2 Scheduled Chlorinator Maintenance ........................................................................................................................... 21
5.0 Troubleshooting ............................................................................................................................... 22-23
6.0 Warranties .......................................................................................................................................................................... 25
Listed andManufacturedtocomplywith UL 1081 Standard for Safety for Swimming Pool
Pumps, Filters, and Chlorinators; and CSA C22.2 No 218.1
Standard for Spas, Hot Tubs, and Associated Equipment

5
0.0 IMPORTANT SAFETY WARNINGS
When installing and using this electrical equipment,basic safetyprecautionsshould always be
followed,includingthe following:
-READ AND FOLLOW ALL
INSTRUCTIONS IN THIS M ANUAL.
–To reduce the risk of injury, do not permitchildren to use this product.
–Risk of Electric Shock.Connectonlyto a branch circuit protected by a ground-fault
circuit-interrupter (GFCI).Contact a qualified electricianif you cannot verifythat the
circuit is protected by a GFCI”. “CAUTION: CONNECT ONLY TO A CIRCUIT
PROTECTED BY A CLASS A GROUND FAULT CIRCUIT INTERRUPTER”.
-The unit must be connectedonlyto a supplycircuit that is protectedby a ground-
fault circuit-interrupter (GFCI).Such a GFCI should be provided by the installer and
should be tested on a routinebasis. To test the GFCI, push the test button. The
GFCI should interrupt power. Push the reset button. Power should be restored.If the
GFCI fails to operate in this manner,the GFCI is defective.If the GFCI interrupts
power to the pump without the test button being pushed,a ground current is flowing,
indicatingthe possibility of an electric shock. Do not use this chlorinator.Disconnect
the chlorinator and have the problem corrected by a qualifiedservice representative
before using.
–To reduce the risk of electric shock,replace damagedcord immediately(where
line cord is permissibleby local codes).The installationmust conform to all
applicableprovisionsof the CanadianElectric Code, CSA C22.1.
- High Voltage is present in some chlorinator circuits making it
mandatory that any
electricalmaintenanceand repairs be attempted onlybyproperlyqualified
personnel.

6
0.0 IMPORTANT SAFETY WARNINGS
-If additional chlorine is required due to heavy bather loads,
use chlorine to
maintain an appropriate chlorine residual in the w at e r. Do not add directlyto
skimmer as this maydamagethe cell.
-Maintaining high salt
an d chlorinelevels above recommended range
contributes to accelerat ed corrosion of pool an d s p a equipment .
- NOTE: For outdoor pools, chlorine residuals c
a n be protected from
destruction by sunlightby addition of stabilizer (cyanuric acid).
-Heavy pool (or spa) usage, and higher temperatures may require higher
chlorine output to maintain proper free available chlorine residuals.
-Check the expiry date of the test kit as test results may be inaccurate
if used after that d a t e .
-The life expectancy of the electrolytic cell is 15 000
h ou r s
under norma l use c onditions.
-Operatingthe VX7T Salt ChlorineGenerator without water flow through
the cell can cause a build-up of flammablegas which can result in FIRE
OR EXPLOSION.

7
0.0 IMPORTANT SAFETY WARNINGS
-For proper sanitation, spas must be completely drained periodically. The number of
days between COMPLETE SPA DRAINAGE is equal to the volume of spa water in
litres, divided by 10 times the maximum number of daily spa users. Refill spa with
water and repeat DIRECTIONS FOR USE of the chlorinator.
-People with a medical condition should consult a physician before entering pool
or spa water. RISK OF HYPERTHERMIA.
-Maximum spa water usage temperature is 40°C. Bathing in spa water at 40°C should
not exceed 15 minutes. RISK OF HYPERTHERMIA.
-W hen replacing the cell, only use replacement cells having a label t h a t clearly
states that it is a replacement cell for the VX7T SaltChlorine Generator, matching
specific chlorinator model.
REGISTRATION NUMBER 3 1 1 8 7 , PEST CONTROL PRODUCTS A C T
WARNING: Do not use this device with bromide products.

8
VX7T SALT CHLORINE GENERATOR
1.0 GENERAL OVERVIEW
Congratulations! You have purchased a VX7T Salt Chlorine Generator. Please read the instructions carefully and your purchase will
provide you with years of trouble free use.
Your VX7T Salt Chlorine Generator works by converting some of the salt in your pool into chlorine which starts to destroy algae and
bacteria in your pool water thereby sanitizing your pool. As part of the process, the chlorine is converted back into salt and hence
salt is not consumed.
Your VX7T Salt Chlorine Generator control has many features to ensure simple operation of your chlorinator and filtration system. It
has a clever Spa mode to ensure that the right level of chlorine is produced whilst you are enjoying a spa.
The VX7T Salt Chlorine Generator has an internal electronic time clock designed to operate the filtration pump up to 4 time periods
Monday to Friday and 4 time periods Saturday/Sunday. This model should not be connected to an external time clock where power
is disconnected on a regular basis. The VX7T Salt Chlorine Generator has a battery backup which is designed only to maintain timer
setting memory in the event of an infrequent and short power interruption.
TO REDUCE THE RISK OF INJURY, DO NOT PERMIT CHILDREN TO USE THIS
PRODUCT.
1.1 CHLORINATOR CONTROL UNIT INSTALLATION
The VX7T Salt Chlorine Generator control has a Rating of IP24 enabling it to be installed outdoors. Regulations state that the
chlorinator control unit is not allowed to be located within 3 m (10 ft) of the pool water.
The chlorinator control unit 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.
Included in the kit are two green masonry plugs and screws. When installing on a brick or concrete wall, use a 7 mm (9/32) masonry
drill. Mounting Screws should be 180 mm (7.1 in) apart and located at least 1.5 m(5 ft) above ground level.
When installing the chlorinator control unit on a post, first attach a flat waterproof panel at least 300 mm wide by 500 mm long (12 in
wide by 20 in long). Make sure the unit is located centrally on the panel and sits flat.
Have a qualified electrician install a weatherproof junction box with a GFCI protected outlet. Plug the chlorinator control unit power
cable to the GFCI protected outlet. Then plug the power cable from the cell into to the chlorinator control unit. Finally, plug the
power cable from the pump into the chlorinator control unit.
Note: The pump current rating must not exceed 8 amps.
WARNING
The VX7T Salt Chlorine Generator must have the circulating pump connected to the pump outlet on the bottom of the chlorinator
control unit.
1.2 CELL INSTALLATION

9
The chlorinator cell must be located last in the pipe work just prior to the return to the pool. If valves are installed between the
chlorinator control unit and the pool outlet, it is essential that they cannot deadhead the pump. If the pressure in the cell exceeds
150kPa (22 psi) and/or the water temperature exceeds 40°C (104°F), the cell may fail.
WARNING: Never install the cell before the pump or heater
The cell must be installed with the barrel unions underneath and the cell should be horizontal. 50 mm (2 in) fittings have been
provided. Make sure that the O-rings are correctly fitted and the unions are done up tightly.
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 (as indicated by flow direction label mounted on cell).
WARNING: It is essential that pipe work and equipment do not allow gases generated from the cell to build-up in
the cell.
CELL (HOOK-UP) WIRING
Once the cell is installed , connect the black multi-core cable from the chlorinator control unit to the cell. The blue wire must be
connected to the blue terminal. The (multi-core) 4–wire cable wires are color coded to match their corresponding connection points

10
in the cell—the posts fit into the corresponding color keyed sockets on the connector end of the cell housing. The cable is designed
to come from below the cell. Make sure wing nuts are correctly tightened to ensure good contact.
1.3 POOL PREPARATION
The chlorinator requires a minimum 3000 ppm of salt but the recommended level is 4000 ppm therefore add 4 kg (8.8 lbs) of salt
for every 1000 L (265 gal) of water (a typical pool of around 50 000 L (13,210 gal) requires 200 kg (441 lbs) 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 the low salt light
is not on. If it is, check again in 24 hours.
2.1 USER PANEL
The user panel can be broken down into 4 separate areas:
-Programming area for setting the clock and on periods.
-Chlorine Output Controls for setting the chlorine output level and to activate the Safety Backwash feature.
-Warnings display to indicate that there is no flow to the cell or there is insufficient salt in the pool.
-User Mode for manual control of the pump/Chlorinator or to select Spa mode.
-Chlorine Production Level indicates the amount of chlorine being produced.

11
Once programmed, you will generally only use the User Mode and Chlorine Output control.

12
2.2 Programming
Setting Current Time/Day
Select POOL MODE Standby/Off
(a) Press the CLOCK button.
(b) Press DAY to change the current day.
(c) Press HOUR to move the Display cursor to the hour digits and then use the Up and Down arrows to the right of the
display to change the current hour.
(d) Press MIN to move the Display cursor to the min digits and then use the up and down arrows to the right of the display
to change the current minutes.
(e) Press the CLOCK button to exit the clock setting mode.
Setting Timers
Your Chlorinator has 4 timers enabling you to set four different periods in which your chlorinator/pump will operate. Different
periods can be set for the weekend compared to weekdays. Timers are set by entering a start time, and a period for how long
you want to operate (i.e. Mon –Fri T1 On 14:00 and Mon –Fri T1 Period 6:15 will run the chlorinator/pump during weekdays
from 14:00 for 6.25 hours). To set timers, do the following:
(f) Select POOL MODE Standby/Off
(g) Press the TIMER button to step to the timer you want to set.
(h) Press DAY button to step from Mon-Fri to Sat-Sun and vice versa.
(i) Press HOUR button to set the hour for the timer selected and use the Up/Down arrows to change the time. NOTE:
Hour digits go from Not Used and then 0 to 23. If you don’t want to use this timer, select Not Used.
(j) Press MIN button to select the minutes for the timer selected and use the Up/Down arrows to change the time. Press
the TIMER button to select the Period or another time and set as required.
(k) When finished, press the TIMER button a number of times to scroll through the other times until you return to normal
display. This saves your new settings.
(l) Select POOL MODE Auto
Programming Recommendations
Astral recommends that you use two timers, one for the morning and one for the evening and typically for periods of 2-5 hours
for each. Your chlorinator is most effective if running in the early morning or evening when it is cooler (strong sunlight
consumes more chlorine). As a default, the control is set to come on at 08:00 and 16:00 both for periods of 4 hours.
NOTE: Due to different time clock settings for weekday and weekends, the timer periods cannot be set to run past midnight
(24:00 hours). If you cannot adjust the start time for a timer period, it is likely the period of run time is set to go beyond 24:00
hours. To correct this, reduce the period run time first, then return to the start time and adjust.
An example of this is if you have your timer period set to run for 4 hours, the chlorinator will not allow the start time to be set
any later than 19:59. If you require the chlorinator to start at 20:00 hours, the running period must be less than 4 hours to
prevent cross over to the next day.
2.3 CHLORINE OUTPUT
The Chlorine Output Control area of the user panel has three main functions:

13
(a) Increase/Decrease arrows for setting the chlorine output level of the chlorinator. The chlorinator output can be set
from levels 1 through to 8. This level only applies to Pool Mode. When the Chlorinator is in Spa mode, the chlorine
output will be at level 1.
(b) Chlorine Output display shows the level set.
(c) The LCD display will also show an output level from 1 to 8 which indicates the performance of the chlorinator
compared to the Chlorine Output LED’s. Should the LCD output level (1 to 8) be less than the LED output, check salt
level in pool. Should salt level be at 4000 ppm and output more than 2 settings less than LED display, your cell may
need replacing.
2.4 User Mode
The user mode buttons enable you to select Pool or Spa mode and to manually control the Chlorinator/Pump. Functions are as
follows:
(a) POOL MODE: Sends a message to other Astral equipment (if fitted) to go to Pool mode. There are 3 Pool Modes:
Auto The Chlorinator/Pump will run according to how you have set the timers.
On The Chlorinator/Pump will run continuously.
Standby/Off The Chlorinator/Pump will stay off continuously.
(b) SPA MODE: Sends a message to other Astral equipment (if fitted) to go to Spa mode and turns the pump on.
Spa
Mode
Pool
Mode
Auto
Standby/Off
On
Press to Select Pool
Mode.
Repeated pressing
scrolls through
Auto, On and
Standby/Off
Press to Turn
On/Off Spa Mode
Indicates Chlorinator
running off timer settings
Indicates
Chlorinator/Pump
manually on
Indicates
Pump/Chlorinator
manually off

14
3.0 WARNINGS DISPLAY
Apart from messages displayed on the User display, there are two warning indicators.
(a) LOW SALT: This indicates that the concentration of salt has reduced within your pool. To rectify, add salt at approx.
50 kg (110 lbs) per 50000 L (13,333 gals) of water (see Salt level under section 3.5 below).
(b) NO FLOW: This indicates that the Chlorinator thinks that there is no flow to the cells. Potential problems/solutions
are described in Troubleshooting section 5.0.
3.1 CHLORINE OUTPUT LEVEL
The LED lights on the user panel set the desired output level or chlorine level.
As shown below, the bottom right hand corner of the LCD display indicates the actual level as distinct from the set or desired
output indicated by the LED lights.
The chlorinator output, or chlorine production, will be affected by water temperature, salt levels and the input voltage of the
chlorinator. When the chlorinator is operating at maximum efficiency, the Chlorine Output level should always be
approximately the same level as the Set Point. The set point can be checked on the LED display which is divided into 8
sections. If all 8 LED’s are illuminated, out set point is at 8. If only 6 lights are illuminated, the set point is 6.
Chlorine output Level

15
Timer
Clock
Day Hour Min.
Chlorine Output
Spa
Mode
Pool
Mode
Auto
Standby/Off
On
Boost
Low Salt
No Flow
Chlorine Output Control User Mode
Warnings
display
Programming Area
Your VX7T Salt Chlorine Generator will always attempt to adjust the output so that the actual output level matches set point
level. At times when the Chlorine output level is lower than the set point, check the salt level in your swimming pool at your
local pool shop. Alternatively, you may have a low voltage supply to the chlorinator (less than 240V) or the water may be
colder than usual.
Maximum efficiency will be achieved from your chlorinator at the following levels:
Water at 27° C
Voltage at 240V
Salt Level at 4000 ppm
3.2 SAFETY BACKWASH
When backwashing your sand filter, the pool water does not pass through the cell. During the backwash and rinse process,
most chlorinators will build-up potentially explosive hydrogen gas in the Chlorinator Cell.
The Safety Backwash function allows the pump to turn on without applying power to the Chlorinator Cell. This prevents the
build-up of hydrogen gas during the back wash and rinse process. In addition, the Safety Backwash function has set run times
after which the pump will automatically turn off. This will prevent extended backwashing and potential excessive water loss
from the pool.
To Back Wash and Rinse your filter follow these steps:
1. Press the pool mode button to the “off/standby” mode
2. Turn the Multiport Valve to “Backwash” position
3. Press the Safety backwash button on the user panel –the pump will now start without applying power to the
chlorinator cell
a. Press once for one minute pump operation
6 +
Chlorine Output
Safety
Backwash

16
b. Press twice for two minute pump operation
c. Press three times for three minute pump operation
d. Press four times to turn pump off
4. After pump turns off turn the filter multiport valve to Rinse
5. Press the Safety backwash button on the use panel once for a one minute rinse
6. When pump turns off, move the multiport valve back to filter position
7. Press the pool mode button to “Auto” function so that the chlorinator will operate on time clock settings.
3.3 RUN DRY SAFETY FEATURE
Your VX7T Salt Chlorine Generator incorporates a run dry safety cut out. When the Chlorinator turns the filter pump on, it will
check for water flow. If no water flow is detected within 3 minutes, the chlorinator will turn the pump off. This is designed to
protect the pump seal and parts from overheating if no water flow is present.
On initial start-up, you will need to prime the pump. In some cases, the pump will take more than three minutes to prime and
for water flow to be detected by the chlorinator. If this should occur, simply start the pump again by pressing the Pool Mode
button to “on”.
If during normal operation, the chlorinator switches the pump off after three minutes, then check the position of all valves,
empty skimmer basket and pump basket and clean the filter.
PLEASE SEE PAGE 20 FOR THE RECOMMENDED METHOD OF CELL CLEANING AND
MAINTENANCE.
W hen replacing the cell, only use replacement cells having a label t h a t clearly
states that it is a replacement cell for the VX7T SaltChlorine Generator, matching
specific chlorinator model. REGISTRATION NUMBER 31187, PEST CONTROL
PRODUCTS A C T
3.4 GENERAL OPERATION/POOL CHEMISTRY (ALSO SEE CHART ON PAGE 21)
Your VX7T Salt Chlorine Generator must be run every day to ensure that your pool is correctly sanitized. As the sun dissipates
chlorine, running times are higher in the summer compared to the winter. Astral recommends that you initially run your
chlorinator at maximum output.

17
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 and 4-5 hours in
the evening. In
extremely hot weather it may be necessary to extend the running time if you find that the free chlorine level is too low.
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 1ppm and 3 ppm . 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.
3.5 STABILIZER
As previously mentioned, sunlight rapidly dissipates the amount of free chlorine in your pool. Chlorine stabilizer greatly
reduces this effect.
Without stabilizer, you may need to run your Chlorinator and filtration system up to 16 hours per day longer!
Keep the Stabilizer reading between 30 ppm and 100 ppm.
pH Level
You should keep your pH level between 7.2 and 7.8 for fibreglass pools and for other pools.
Total Alkalinity
The ideal range is between 100 ppm 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 4000 ppm but should never be allowed to fall below 3000 ppm.
A typical pool of around 50 000 L (13,210 gals) requires 200 kg (441 lbs) of salt to initially set-up the pool to 4000 ppm.
A low salt level warning is indicated on your VX7T Salt Chlorine Generator if the salt level drops. If Low Salt is indicated, check
again in 24 hours and then if it is still indicated, add two 25 kg (55 lb) bags of salt to the shallow end of your pool. Run the
filtration system for approximately 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 4000 ppm then you may need
to have your Chlorinator checked.
Warning: Some people recommend that you put salt directly in the skimmer box. This is a very bad practice as it allows very
high concentrations of salt to be passed through your filtration and other pool equipment.
4.0 CHLORINATOR MAINTENANCE AND TROUBLESHOOTING

18
If the supply cord is damaged, it must be replaced by Astral or its service agent or a similarly qualified person in order to avoid a
hazard.
4.1 Cell Maintenance
Your VX7T Salt Chlorine Generator has an automatic cleaning feature that under normal conditions, will keep the cell plates
clear of deposits of salt and calcium.
VX7T Salt Chlorine Generator cells have a negative charge sensor that monitors the flow and salt levels of the water. This
sensor is designed to be fail safe. As the cathode electrodes are negatively charged, deposits of calcium, or other (positive
charged) dissolved minerals and debris, may deposit on them and cause the system to indicate a false low salt, or no flow
condition--due to the electrodes' electrical resistance increasing. Should a low salt condition be indicated, have your salt level
separately verified at your local pool shop. If the false 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.
W hen replacing the cell, only use replacement cells having a label t h a t clearly states
that it is a replacement cell for the VX7T Salt Chlorine Generator, matching specific
chlorinator model. REGISTRATION NUMBER 31187, PEST CONTROL PRODUCTS
ACT.
Cell Cleaning Instructions:
-Close applicable valves.
-Disconnect the chlorinator control unit from the GFCI protected outlet.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 with wing nuts supplied making sure the blue wire is connected to the blue terminal.
Incorrect connection may damage your chlorinator control unit. Tighten wing-nuts to ensure the electrical
connection is sound.
-Return all valves to their normal position, re-connect power to the chlorinator control unit 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.