Arctic Onzen Technical data

Onzen
Technical Guide
Onzen + Sea Salt
= Natural Salt Water care made easy.
Onzen Technical Guide
Table of Contents
1.0 Onzen Technical Guide ...................................................................................................................................................................... 2
1.1 Obtaining Technical Data For Your Spa ...................................................................................................................................... 2
1.2 Revision Summary ............................................................................................................................................................................ 2
1.3 What is Onzen? ................................................................................................................................................................................. 2
1.4 What Does Onzen Do? ................................................................................................................................................................... 2
1.5 What Are The Benefits of Onzen? .................................................................................................................................................. 2
1.6 How Does Onzen Work? .............................................................................................................................................................. 2
1.7 How to Determine Spa Production Date ...................................................................................................................................... 2
1.8 Definitions of Terms ...................................................................................................................................................................... 3
1.9 Water Chemistry Abbreviations/Acronyms & Levels ............................................................................................................. 6
1.10 Abbreviations Acronyms & Settings ........................................................................................................................................ 6
1.11 Onzen Warranty .............................................................................................................................................................................. 7
1.12 Onzen Start – Up Guide ............................................................................................................................................................... 8
1.12.1 Onzen Start-Up Overview Flowchart .......................................................................................................................................... 8
1.12.2 Fill Spa With Water Power Up Spa and Set Water Temperature.......................................................................................... 9
1.12.3 Establishing Correct Water Chemistry ............................................................................................................................. 10
1.12.4 Arctic Spas Onzen Salt Dose Guidance Table ................................................................................................................ 12
1.12.5 Using Sodium Chloride Test Strips ................................................................................................................................... 13
1.12.6 Program Filtration & Onzen Settings ................................................................................................................................. 15
1.12.7 Conducting a Sanitizer Production Test .............................................................................................................................. 18
1.12.8 Sanitizer Readings ...................................................................................................................................................................... 21
1.13 Onzen Cloudy Water Troubleshooting Flowchart ............................................................................................................ 22
1.14 Onzen Frequently Asked Questions......................................................................................................................................... 23
1.15 Arctic Spas Onzen Maintenance Schedule .............................................................................................................................. 25
1
Onzen Technical Guide
1.0 Onzen Technical Guide
1.1 Obtaining Technical Data For Your Spa
To ensure you have the current appropriate technical data for your spa it is recommended that you obtain such data from your authorised retailer or from the Arctic Spas Web Site http://www.arcticspas.com.
1.2 Revision Summary
This publication has been fully revised to provide the supporting details Onzen Version 8, and spas with the
Eco-Pak spa controller.
1.3 What is Onzen?
Onzen is an all-natural, salt-water softening and maintenance system.
1.4 What Does Onzen Do?
· Softens water.
· Clarifies water.
· Adds back up sanitizing (Chlorine) agents, automatically.
1.5 What Are The Benefits of Onzen?
· Makes skin feel soft and smooth.
· Makes water look sparkling clean.
· Reduces contact with harsh chemicals.
· Dramatically reduces time and money needed to maintain spa water.
· Reduces impact to the environment:
1. Fewer trips to the spa store for supplies.
2. Less packaging wasted on chemical containers.
3. Less industrial waste produced making spa chemicals.
1.6 How Does Onzen Work?
· Natural mineral sea salt blend is added to water when spa is filled.
· Sanitizing agents (Chlorine) are produced and mixed with water, automatically.
· Output is easily controlled to suit very low to very high use.
1.7 How to Determine Spa Production Date
The Spa production date can be determined from the Spa Serial Number recorded on the Spa Identification Plate mounted on the cabinet usually under the topside controller.
Example
Spa Serial No. A10H131112
· The two digits following the first letter represent the year that the Spa was built 10 = 2010.
· The letter following the first two digits represent the month that the Spa was built H = August.
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Onzen Technical Guide
1.8 Definitions of Terms
TERM
Onzen
Onzen Output Electrode
DEFINITION
An all-natural, salt-water softening and maintenance system.
Platinum-iridium Titanium electrode - equipped salt cell converts the saltwater
solution to sanitizer, and as this solution reverts back to its natural form (salt) after
sanitizing. Unless large volumes of water are added to the spa you never have to add
more salt.
Onzen Output Electrode Version Modification status of the electrode fitted to the spa.
Calcium Hardness (CH)
Calcium Hardness is a measure of the total amount of dissolved calcium salts in the
water.
CH helps determine how scaling or corrosive the water is. It is believed that
calcium helps control the corrosive nature of water.
Calcium has two major problems in Hot Water Chemistry:
1. CH has a tendency to precipitate (fall out of suspension in high
temperatures.
2. High pH will cause calcium to precipitate. The problem with
calcium falling out of suspension is that it collects on the heater
and pump, and shortens their life. Any natural corrosiveness
in the water can be combated by maintaining a slightly higher
Total Alkalinity Level.
Alkalinity Total Alkalinity (TA)
A measure of how stable the pH is (a measure of the total levels of carbonates,
bicarbonates, hydroxides, and other alkaline substances in the water).
TA is referred to as the water’s “”pH buffer””. In other words, it’s a measure of the
ability of the water to resist changes in pH level.
If the TA is too low, the pH level will fluctuate widely from high to low.
Fluctuations in pH can cause corrosion or scaling of the spa components.
Low TA can be corrected by adding Arctic Pure, Perfect Balance to the spa water.
If the Total Alkalinity is too high, the water will be more susceptible to scale and
high pH. High pH may be difficult to bring down. Note: Salt systems naturally
drive pH levels to increase.
High TA can be lowered by adding Arctic Pure, Adjust Down to the spa water.
Once the TA is Balanced, it normally remains stable, although some sanitizers, and
the addition of more water with a high or low alkalinity will raise or lower the TA
reading of the water.
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Onzen Technical Guide
TERM
Potential Hydrogen
(pH)
DEFINITION
The pH level is the measure of alkalinity.
Maintaining a Balanced pH level is extremely important for:
· Optimizing the effectiveness of the sanitizer.
· Maintaining water that is comfortable for the user.
· Preventing equipment deterioration.
· Note: Salt systems naturally drive pH levels to increase, strive
to achieve a Balanced pH level.
If the spa water’s pH level is too low, the following may result:
· The sanitizer will dissipate rapidly.
· The water may become irritation to spa users.
· The spa’s equipment may corrode.
Low pH can be raised by adding Arctic Pure, Adjust Up to the spa water.
If the pH level is too high, the following may result:
· The sanitizer is less effective.
· Scale will form on the spa shell surface and the equipment.
· High pH will cause calcium to precipitate (fall out of suspension).
· The water may become cloudy.
High pH can be lowered by adding Arctic Pure, Adjust Down to the spa water.
It is important to check the pH on a regular basis. The pH will be affected by the
bather load, the addition of new water, the addition of various chemicals, and the
type of sanitizer used.
Chlorine
Free Chlorine (FCL)
FCL is the active form of chlorine that actually kills bacteria and algae (It is a
Sanitizer).
Sanitizer is extremely important for killing algae, bacteria and viruses, and
preventing unwanted organisms for growing in the spa. At the same time, you don’t
want too high a sanitizer level, or it can irritate your skin, lungs and eyes.
Always maintain the sanitizer level in your spa at the recommended level for each
type of sanitizer.
Chlorine Residual
The actual level of chlorine in the water after the chlorine demand has been satisfied.
Sanitizer
Chemical used to kill bacteria.
Generic names: Chlorine, Bromine.
Arctic Pure, Boost or Refresh.
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Onzen Technical Guide
TERM
Parts Per Million (ppm)
DEFINITION
ppm: parts per million, a standard measure of chemical or
mineral concentration.
Organic waste
Debris such as microorganisms, perspiration, urine, etc.
which needs to be burned up or “oxidized” regularly to
prevent haze, algae, chloramines, etc.
Shock
An oxidizer that “burns off ” the organic wastes which cause
cloudiness and algae. It is a generic term for a chemical used
to oxidize organic wastes. Arctic Pure, REFRESH.
ORP
Oxidation–Reduction Potential.
This is simply a measurement of the water’s ability to cleanse
itself. ORP is measured in millivolts (mV).
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Onzen Technical Guide
1.9 Water Chemistry Abbreviations/Acronyms & Levels
ABBREVIATION/ACRONYMS
CH
TA
pH
FCL
ORP
DEFINITION CORRECT
Calcium Hardness
Total Alkalinity
Potential Hydrogen
Free Chlorine
Oxidation–Reduction Potential
CHEMICAL LEVELS
50 - 150 ppm
80-100 ppm
7.2 – 7.6 ppm
1 – 3 ppm
600 - 1000
1.10 Settings Abbreviations Acronyms
ABBREVIATION/
ACRONYMS
DEFINITION
Filter Cycle Duration
Fd
Fd 00 = no filtration.
Fd 01 = 1 hour/cycle.
Fd 02 = 2 hour/cycle.
Filter Cycle Frequency
FF
FF 1 = 1 cycle in 24 hours.
FF 2 = 2 cycles in 24 hours.
FF 3 = 3 cycles in 24 hours.
FF 4 = 4 cycles in 24 hours.
Onzen Cycle Duration
On
0-24 Hours per day
* Cycles are divided into 4
ie: If 8 hours is selected, the system will perform 4 x 2 hour cycles per day.
Ozone Cycle Duration
O3
0-24 hours per day
* Peak II only, if Peak 1 is installed ozone will run during filtration.
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Onzen Technical Guide
1.11 Onzen Warranty
2013 Factory installed Onzen systems serial #150000 and greater will have a two-year warranty on labor and
components. Excluding the electrode that will have a 30-day warranty against defects in workmanship. The electrode as
a consumable part that needs to periodically changed like a filter. Retrofit Onzen systems will have the same warranty
minus labor.
We will continue to support old versions of onzen as we have in the past. Spas with serial #149999 and lower will have a
two-year warranty on labor and components. The electrode will have a 1-year warranty. Retrofit Onzen systems will have
the same warranty minus labor. We may require an email address for the consumer in order to process claims so we can
send them clear definition of how to use their system and clearly tell them that the electrodes are consumable items like
filters or chlorine etc).
The recommended salt concentration is 1500-1800 ppm. Even though the lifespan on the electrode seems to be
maximized at 2200-2400 ppm when we consider the overall impact of the corrosive nature of salt on the other spa
components it is clear that lower salt is better.
There will be no warranty on listed parts: heaters, heater barrels, jets, grab rails, pump seals, and pump motors affected by
leaking pump seals. subject to salt-water failure with any system where the consumer is not using ArcticPure brand salt.
Spa water quality and other damages resulting from water imbalance are specifically not covered by this warranty.
Warranty work must be completed by authorized Arctic Spas retailers only. No labour warranty is provided by Arctic
Spas for Onzen systems installed on site, only faulty parts are covered.
Disclaimer: this is not an automatic water care system. The system is set up for typical hot tub use. “Boost” may be
needed to supplement sanitizer generation with higher hot tub use.
The spa user is ultimately responsible for maintaining proper sanitary water conditions. Use of salt other than Arctic Pure
sea salt blend will damage the components and void the warranty. The Arctic Pure blend has been developed to protect
Onzen components from damage and the use of alternative salt blends will be easily detected by technicians.
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Onzen Technical Guide
1.12 Onzen Start – Up Guide
1.12.1 Onzen Start-Up Overview Flowchart
8
Onzen Technical Guide
1.12.2 Fill Spa With Water, Power Up Spa and Set Water Temperature
The following steps provide guidance to help establish correct chemically balanced water. To help ensure chemicals
dissolve appropriately it is good practice to first mix/dissolve the chemical in an uncontaminated container of hot water
before carefully adding to the spa water.
Steps to Fill Spa With Water Power Up Spa and Set Water Temperature
Step 1. Fill Spa Fill your spa through the filter intake as shown
to the appropriate level (just under the head rests). If you have
sediment or high mineral content a “carbon filled pre-filter”, as
pictured, can help. (This is optional and will prolong the fill time).
Step 2. Connect/Turn on Electrical Power to the spa once the spa
is filled to the proper level, and turn the power on to the spa on.
Step 3. Set Water Temperature Set the water temperature control
on the Topside Controller to the desired temperature (between
100ºF and 104ºF or 38°C and 40°C).
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Onzen Technical Guide
1.12.3 Establishing Correct Water Chemistry
The following steps provide guidance to help establish correct chemically balanced water.
To help ensure chemicals dissolve appropriately it is good practice to first mix/dissolve the chemical in an
uncontaminated container of hot water before carefully adding to the spa water.
Steps to Establish Chemically Balanced Water With Onzen
Step 1. Test and Adjust Calcium / Total Alkalinity
(a) Test Calcium hardness. Level should be between 50-150 ppm.
If high, lower with a stain & scale controller such as Arctic Pure,
Best Defence, to help hold the Calcium in suspension.
NOTE: Salt systems perform best with Low Calcium levels.
(b) Test Total Alkalinity. It should be 80 – 100 ppm (100 max). If
high, lower Total Alkalinity with Arctic Pure, Adjust Down (pH
Down) or muriatic acid. Do not raise Total Alkalinity!
WARNING: Skipping these steps on Start-up can cause scaling
problems and cloudy water that may not be covered under warranty.
NOTE: Use all products according to directions on the bottle.
Step 2. Test and Adjust pH
Test pH. Levels should be between 7.2 – 7.6.
If pH is high, (over 7.6) add Arctic Pure, Adjust Down.
If pH is low, (under 7.2) add Arctic Pure, Adjust Up.
NOTE: Use all products according to directions on the bottle.
NOTE: Salt systems naturally drive pH levels to increase, strive to
achieve a Balanced pH level.
NOTE: High pH will cause calcium to precipitate (fall out of
suspension). The problem with calcium falling out of
suspension is that it collects on the heater and pump, and
shortens their life.
Step 3. Mix Salt Crystals
Dissolve 1/3 of the minimum recommended salt dosage in a 5 Gallon (20
litre) pail of hot water.
Refer Arctic Spas – Onzen Salt Dosage Chart contained in this guide.
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Onzen Technical Guide
Steps to Establish Chemically Balanced Water With Onzen Continued
Step 4. Add Salt to Spa Water & Test TA / pH
(a) Slowly pour the dissolved salt from the pail into the spa water.
(b) Run pumps for 5 minutes to help mix salt blend through.
(c) Wait 1 hour.
(d) Then test and adjust Total Alkalinity level accordingly.
(e) Then test and adjust pH level accordingly.
Refer to steps 3 and 4 for correct TA/pH levels.
Step 5. Repeat Step 3 & 4
Repeat steps 5 and 6, ensuring all sub steps are carried out accordingly.
Step 6. Repeat Step 3 & 4
Repeat steps 5 and 6, ensuring all sub steps are carried out accordingly.
Step 7. Test Sodium Chloride Level
You will now need to test sodium chloride levels.
Refer ‘Using Sodium Chloride Test Strips’ for details.
If sodium chloride levels are low, dissolve 1/2 lb (225 Grams) of salt
(using cup provided) into hot water. Pour the dissolved salt into the
spa water. Test sodium chloride level.
Repeat until required sodium chloride level is reached:
Minimum
Maximum
1500 ppm
1800 ppm
Note: The Arctic Spas Onzen Salt Chart in this guide provides the
estimated impact of adding ½ lb (225 Grams) of salt to
your spa.
Note: For start up it is recommended to strive for the minimum
salt dosage. Once a Sodium Chloride reading has been taken
and the minimum salt dosage achieved, it can be increased
slightly to accommodate spa usage and bather load, if
increasing the Onzen run time does not adequately increase
the Chlorine Residual. Having the minimum amount of salt
concentration unless the Onzen system is unable to maintain
the proper Chlorine Residual, will reduce potential corrosion
and increase the life of the Onzen Output Electrode.
11
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The following table identifies the salt quantity required for each Arctic spa model and estimated impact of adding half pound (225g) of salt.
For start up it is recommended to strive for the minimum salt dosage. Once a Sodium Chloride reading has been taken and the minimum salt dosage achieved,
it can be increased slightly to accommodate spa usage and bather load, if increasing the Onzen run time does not adequately increase the Chlorine Residual.
Having the minimum amount of salt concentration unless the Onzen system is unable to maintain the proper Chlorine residual, will reduce potential
corrosion and increase the life of the Onzen Output Electrode.
1.12.4 Arctic Spas Onzen Salt Dose Guidance Table
Onzen Technical Guide
Onzen Technical Guide
1.12.5 Using Sodium Chloride Test Strips
The following steps provide guidance to help ensure sodium chloride test strips are used correctly.
Steps to Help Ensure Sodium Chloride Test Strips are Used Correctly
Step 1. Take Water Sample
Take a sample of water from the spa in a small cup
(about 25mm / 1” full).
NOTE: Always take water samples 25-30cm (12”-18”) below
the water surface.
Step 2. Place Test Strip in Water Sample
Place the lower end of the strip into the water.
IMPORTANT Keep top half of strip COMPLETELY dry to get
an accurate reading.
Step 3. Test Duration Period
Leave strip in water for 3 – 5 minutes until yellow band
at top of strip turns dark.
Step 4. Obtain Readings
Obtain your reading: where top of white peak falls on
the number scale.
Read top of peak to the nearest 0.2 division.
Step 5. Correspond Test Result Reading
Correspond the test result reading number with the
numbers on the bottle.
13
Onzen Technical Guide
Steps to Help Ensure Sodium Chloride Test Strips are Used Correctly Continued
Step 6. Sodium Chloride Adjustment
The following levels are ideal:
Minimum
Maximum
1500 ppm
1800 ppm
Note: The Arctic Spas Onzen Salt Chart in this guide provides the
estimated impact of adding ½ lb (225 Grams) of salt to your spa.
Add or dilute water as needed.
· If Sodium Chloride reading is greater than the maximum
level, add water.
· If Sodium Chloride reading is less than the minimum level,
add salt.
Note: Once Sodium Chloride reading is in the ideal range salt
concentration will only change if water is splashed or drained out
and spa is replenished with water. Do not add salt unless this test
confirms the level is below the ideal range.
Warranty: Use of salt other than Arctic Pure sea salt blend will
damage the components and void the warranty. The Arctic Pure
blend has been developed to protect Onzen components from
damage and the use of alternative salt blends will be easily detected
by technicians.
Steps to Stabilize Water
Step 1. Stabilize Spa Water
Once Filtration cycles and filtration duration low level settings have
been programmed place the insulated cover on the spa and allow the
water temperature to stabilize (approximately 16 hours). Make sure
you secure the cover in place using the cover locks. Periodically check
the spa water temperature. When the water temperature climbs above
85°F, (29°C) proceed to the next step.
Note: As heat impacts both Calcium and Total Alkalinity a little it
is best to heat the water above 29°C (85°F) before advancing to
Establishing Correct Water Chemistry.
Filter Cycle Suspension
During a Filter cycle, if an accessory (a pump, the blower, or the light) is used manually, the Filter cycle is suspended
during the time that the accessories are used.
Once all accessories are turned off (whether manually or by built-in timer), the Filtration cycle remains suspended for
an extra 40 minutes. When a Filtration cycle is suspended the Filtration cycle icon will blink.
14
Onzen Technical Guide
1.12.6 Program Filtration & Onzen Settings
The Onzen Chlorine Production (Onzen Cycle Duration) settings need to be programmed:
The following steps provide guidance on how to program the Onzen system settings:
Steps to help Set Filtration & Onzen Settings
Step 1. Enter Filtration Options Through Topside Controller
5
Press the Filter button (pump 5 on epics)
to enter into
your filtration options. Your display will show “SETT” and from
here you will be able to choose your settings.
Step 2. Ozone Cycle Duration Through Topside Controller
5
Press your Filter/Pump 5 button
again to display your
first option. This is your Ozone Cycle Duration.
* Peak II only, if Peak 1 is installed ozone will run during filtration.
Step 3. Setting Ozone Duration Through Topside Controller
Use your arrow keys
to select your Ozone Cycle
Duration. You can select from 1 to 24 hours per day.
Step 4. Enter Onzen Settings Through Topside Controller
Press your Filter/Pump 5 button
0n02.
5
again until you see
Your display will now show the settings for your Onzen system.
15
Onzen Technical Guide
Steps to help Set Filtration & Onzen Settings Continued
Step 5. Onzen Cycle Duration
Use your arrow keys
Duration.
to select your Onzen Cycle
You can select from 1 to 24 hours per day.
* Cycles are divided into 4 ie: If 8 hours is selected, the system will
perform 4 x 2 hour cycles per day.
Step 6. Filter Duration
Press your Filter/Pump 5 button
5
again.
Your display will now show the settings for your Filter Duration.
Step 7. Setting Filter Duration
Use your arrow keys
in hours.
to select your Filter Duration
You can select from 0 to 6 hours, the number of hours your
filtration will run each time.
Step 8. Filter Cycle Frequency
5
Press your Filter/Pump 5 button
again.
Your display will now show the settings for your Filter Cycle
Frequency.
Step 9. Setting Filter Cycle Frequency
Use your arrow keys
Frequency
to select your Filter Cycle
You can select from 1 to 4 times per day.
16
Onzen Technical Guide
Steps to help Set Filtration & Onzen Settings Continued
You can move backwards through the settings by pressing the Pump 3 button (Pump 4 on Epic series spas). The Pump
1 button will allow you to exit without saving any changes. When you get to the end of the options, press the filter key
one last time to save changes and begin a filter cycle immediately. If you do not press the filter key again your changes
will be saved and the filter cycle will begin when you have programmed it to do so.
* Press your Filter/Pump 5 button
seconds).
5
again to start the next cycles immediately (Pumps will purge for 20
To EXIT without saving changes press Pump 1.
To SAVE & EXIT but not start the cycle simply let the display time out.
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Onzen Technical Guide
Is Sanitizer Being Produced and Delivered to Spa Water?
This test requires:
· The water temperature to be at least 80º F (27º C).
· The Filter Cycle Duration to be set to 00.
· Onzen Cycle Duration programmed to On 24. Onzen system will run for 24 hours per day.
Step 1. Set Filtration Cycle Time to Fd 00 (= No Filtration)
5
Press the Filter Cycle
Key until SETT is displayed.
The Filter Cycle Duration details “Fd” will be displayed “Fd XX” .
Use down arrow
Duration to Fd 00.
key to change the Filter Cycle
This de-activates the filtration pump so you can see the mist of
gas bubbles produced by the Onzen System.
Step 2. Scroll to On (Onzen Duration) Setting
Scroll through the settings by pressing the Filter Cycle
5
0 & 24).
key until it reads “On X ”. (“x” will be a value between
Step 3. Change On Setting to On 24
Change On setting to On 24.
On 24 programs the Onzen system to produce sanitizer 24 hours daily.
Step 4. Scroll Through Settings
Continue scrolling through the settings by repeatedly pushing the
Filter Cycle
18
5
key until the pack resets.
Onzen Technical Guide
Is Sanitizer Being Produced and Delivered to Spa Water Continued
Step 5. Software Revision
The software revision will flash for 5 seconds.
If any keys are pushed at this stage, you will need to re-start the test from
step 1.
* The pack will go through a purge cycle, turning on all pumps for 20
seconds. Wait until this is complete and the water is still.
Step 6. Confirm Onzen Output Electrode is Releasing a Fine Mist of
SMALL Bubbles
Before touching any spa control keys, locate the Onzen Output
Electrode in the foot well of the spa. There should be a fine mist of
small bubbles coming from the fitting within a minute or two.
If no bubbles are visible, dealer service may be required.
Note: You can still sanitize your spa with granular chlorine!
Step 7. Allow to Produce Sanitizer
If you see bubbles, sanitizer is being produced.
Leave the Onzen system to produce sanitizer for the next few hours and
make sure it does not shut off.
If you do not see these “fine misty small bubbles’ call for service.
Step 8. Reset Filtration Settings
a. After a visual check, you can reset your Filter Cycle Duration.
Fd 1 is suggested.
b. Then reset your desired temperature.
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Onzen Technical Guide
1.12.8 Sanitizer Readings
The following provides guidance on the establishment and maintenance of sanitizer
readings.
Sanitizer Readings
You should have sanitizer (Chlorine) readings within 24 hours.
On Start-up, you can add one capful of Arctic Pure “Boost” to the spa water.
Adding a capful of Arctic Pure Boost (Stabilized Chlorine) will establish an instant Free Chlorine
level while the Onzen system is producing the residual. This will allow you to safely use the spa
until an adequate residual is established.
If levels get too high, turn Sanitizer Production (Chlorine Production “CP”) setting down. If you
are not getting any readings, turn Sanitizer Production (Chlorine Production “CP”) up.
The closer you monitor spa usage, bather load, monitor FCL and adjust Onzen Sanitizer
Production Levels accordingly the less sanitizer you will need to add to your spa water.
Use Arctic Pure, Boost to sanitize the water after heavy usage, or if the Chlorine level is too low.
Important: Always test and balance the pH and Chlorine levels before each spa use.
* Expect the pH to increase slowly over each week and when it gets too high use Arctic Pure,
Adjust Down to correct it.
High Ph will cause premature failure of the system, cloudy water, and decreased effectiveness of the sanitizer.
The Onzen system works best with low levels of calcium. Check your calcium hardness levels monthly to ensure long life
of the spa equipment and maximum user enjoyment.
You must use an oxidizer treatment Arctic Pure, Refresh in your spa. once a week and after heavy bather loads, add one
cap of Arctic Pure, Refresh to your spa, leave the cover open for a minimum of 20 minutes to allow the oxidizer gas to
vent. A high concentration of trapped oxidizer gas, which may exist as a result of the shock treatment, may eventually
cause discolouration or vinyl degeneration to the bottom of the cover. this type of damage is considered chemical abuse
and not covered under warranty.
20
Onzen Technical Guide
1.13 Onzen Cloudy Water Troubleshooting Flowchart
21
Onzen Technical Guide
1.14 Onzen Frequently Asked Questions
Onzen Questions
Question 1: How do I know if the Onzen system is working?
Conduct a “Sanitizer Production test” (Also known as a Smoke test).
This procedure activates the Onzen System while de-activating the filtration pump so you can see the mist of gas
bubbles produced by the Onzen System.
Question 2: What should I do if it fails the “Sanitizer Production test”?
First, confirm you have the correct concentration of salt in the water “using sodium chloride test strips”. Then, start
maintaining your water manually using “Boost” granular chlorine to sanitize and Adjust Up/Adjust Down to balance
pH. Continue to do this daily until the system is repaired by an authorized service technician.
* Keep enjoying your hot tub!
Question 3: What should I do if the chlorine levels are too high?
Turn the Onzen Output down (decrease “On” settings).
Unless you added granular chlorine or shock to the water high chlorine levels mean the system is staying on too long
for your circumstances. It may take a day or two for levels to normalize, or you can speed this process up by using a
chlorine neutralizer, such as “X-it”.
Question 4: What should I do if the pH keeps increasing?
Confirm that your Total Alkalinity is at the recommended level and reduce it manually with ‘Adjust Down’.
This is normal; all spa salt systems cause pH to increase.
Question 5: Will the salted water damage my lawn?
This is very unlikely.
The recommended concentration of salt is used is approximately 10% of the concentration of sea water.
Question 6: Why is my water bright yellow, or bright green, or a rusty colour suddenly?
This can happen if the pH gets too high.
Lower the pH using ‘Adjust Down’. High pH is a sign that the Onzen Output may be turned up too high, so you may
need to adjust the Onzen Output After balancing the pH and adjusting the Onzen Output wait about 48 hours. If the
colour of the water does not normalize you may need to replace the water.
* Keep an eye on the pH and adjust it weekly to avoid this problem in the future.
Question 7: What is the typical amount of maintenance I need to do with Onzen?
1. Change the water twice a year.
2. Change the filter 4 times a year.
3. Check the Total Alkalinity weekly to make sure it is in the target range (Under 100).
4. Adjust the pH once a week. Salt systems naturally drive pH levels to increase, strive to achieve a Low pH level 7.2
must not exceed 7.6.
5. Check Calcium level monthly to ensure it is in the target range. Salt systems perform best with Low Calcium levels;
strive for a target range between 50 - 150 ppm.
6. Adjust the Onzen Output “On” if hot tub use changes significantly.
7. Adjust the chlorine levels using “Boost” granular chlorine, after heavy use or if the Onzen Output is too low.
Refer: Onzen Maintenance Schedule for further details.
22
Onzen Technical Guide
Onzen Questions Continued
Question 8: What should I do if the spa is not going to be in use or when I go on vacation?
(please see FAQ #3)
Question 11 Should I use Best Defence or another scale remover?
It is recommended that calcium be removed from the water in advance rather than adding a scale remover after the fact.
Question 9: What is the impact of phosphates on the Onzen system?
High levels of phosphates (above 250 ppb) may reduce the effectiveness of sanitizer output.
Question 13 What happens if my water becomes cloudy?
1. Test the water for chlorine content. If the level is low add Boost.
2. Check your filters as they may require replacement.
3. Check you pH level you may need to adjust you pH down.
Question 10 : Can I use softened water with my Onzen system?
Yes.
You probably have a water softener because your water is quite hard. Your water-softener
removes calcium from your water and helps you achieve water with calcium content near the
target range, between 50 - 150 ppm.
Question 11: Prior to draining spa water for refill purposes should any form of system flush be carried out?
Yes you can, Arctic Pure ‘Fresh Start’. Use in accordance with the instructions on the container. Flushing the system
components and hoses is helpful when you get biofilm and calcium build-up.
It is good practice to do this at least once a year.
23
24
Monthly
Sodium
Chloride
Filter
Water
7.2 – 7.6 ppm
Check the Potential Hydrogen to ensure it is
in the target range.
Check the Sodium Chloride Level to ensure
it is in the target range.
Refer FCL Maintenance Task
Check Calcium Hardness level to ensure it is
in the target range. Salt systems perform best
with Low Calcium Hardness levels.
Adjust the chlorine levels using “Boost”
granular chlorine, after heavy use or if the
Onzen Output is too low.
N/A
N/A
2 - 4 Hours per
day suggested
Go into low level settings and adjust Onzen Cycle Duration (Chlorine Production On)
accordingly.
Adjust to suit spa usage and bather load.
Change the filter in accordance with Owners Manual instructions
Change the water in accordance with Owners Manual instructions.
Note: It is also good practice to take a water sample on a regular basis and have the water independently tested by your local spa/pool store.
As required
Version 8
1500-1800 ppm
High CH - lower with a stain & scale controller such as Arctic Pure, Best Defence, to help
hold Calcium in suspension.
50-150 ppm
Once Sodium Chloride reading is in the ideal range salt concentration will only
change if water is splashed or drained out. Do not add salt unless this test
confirms the level is below the chemical target range.
High Sodium Chloride - add water.
Low Sodium Chloride - add salt.
Refer FCL Maintenance Action to Adjust/Correct.
High FCL - Can be lowered by:
• Natural cause over a few days.
• Turning Onzen Cycle Duration (Chlorine Production On) down.
• Adding Arctic Pure, X-it.
The above is dependent on FCL level, spa usage and bather load.
Low FCL - Can be raised by adding Arctic Pure, Boost and or turning Onzen
Cycle Duration (Chlorine Production On) Level up.
Low pH - Can be raised by adding Arctic Pure, Adjust Up to the spa water.
High pH - Can be lowered by adding Arctic Pure, Adjust Down to spa water.
Salt systems naturally drive pH levels to increase, strive to achieve a Low pH level 7.2. pH
must not exceed 7.6.
Low TA - Can be raised by adding Arctic Pure, Perfect Balance to spa water.
High TA - Can be lowered by adding Arctic Pure, Adjust Down to spa water.
Maintenance Action to Adjust/Correct
600–1000 mV
1 – 3 ppm
80 – 100 ppm
Check the Total Alkalinity to ensure it is in
the target range.
Check the Free Chlorine Level to ensure it is
in the target range.
Target Range
Maintenance Task
If spa use changes significantly, adjust the
output level of Onzen Chlorine Production
( “On” )
Every 3 Months Change the filter
Every 6 Months Change the water
Monthly
CH
Onzen
Output
Refer FCL
ORP
Weekly
pH
Weekly
(& before each
use)
Weekly
TA
FCL
Frequency
Item
The following table outlines the typical water maintenance program required for an Arctic Spa fitted with Onzen.
To help ensure chemicals dissolve appropriately it is good practice to first mix/dissolve the chemical in an uncontaminated container of hot water before carefully
adding to the spa water.
1.15 Arctic Spas Onzen Maintenance Schedule
Onzen Technical Guide
*** Important Notice Onzen V8 ***
These cells are considered a consumable item and are now designed to be replaced by the customer in order to be more user friendly.
We can not express enough to NOT GET THE INTERNAL CONNECTION WET!
To change your salt cell remove the set screw on your salt cell with a Phillips screwdriver. Now unthread the salt cell from the housing
turning counter clockwise. This will require you to use your muscles as the cell is threaded in quite tight to prevent any water from getting
on to the 12 volt connection. Before threading in the new cell put a generous amount of dielectric grease in and around the 12 volt
connections in the centre of the housing and on the end of the cell. Now thread the new cell into the housing. There is a notch built into
the threads that will stop the cell precisely where the set screw needs to be installed. If the cell is changed under water the connection
will get wet and corrode. The corrosion will destroy the connection between the salt cell and the salt cell housing. This corrosion will be
visibly noticeable upon inspection. Warranty will be void If corrosion between the salt cell and salt cell housing is detected.
** This salt cell requires less salt in your water ** you will now need to keep your salt levels between 1200 and 1500 ppm.
Other chemistry requirements:
Calcium hardness maximum of 50 ppm (0 preferred)
Alkalinity 80 and 120 ppm
pH 7.0 and 7.6
You can then check your sanitizer level and adjust your CP level accordingly.
Boost will always be required to sustain sanitize levels from time to time.
Onzen Technical Support Line: 1-780-789-2646
or E-mail: onzen@goarctic.com