TA Weekly
Check the Total Alkalinity to ensure it is in the
target range.
80 – 100 ppm.
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.
pH Weekly
Check the Potential Hydrogen to ensure it is in
the target range.
7.2 – 7.6 ppm
Salt systems naturally drive pH levels to increase, strive to achieve a Low pH level 7.2. pH must not exceed 7.6.
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.
FCL Weekly (& before eachuse)
Check the Free Chlorine Level to ensure it is in
the target range.
Adjust the chlorine levels using “Boost” granu-
lar chlorine, after heavy use or if the Onzen
Output is too low
1 – 3 ppm
Low FCL - Can be raised by adding Arctic Pure, Boost and or turning Onzen Cycle Duration (Chlorine Production
On) Level up.
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.
ORP Refer FCL Refer FCL Maintenance Task 600–1000 mV Refer FCL Maintenance Action to Adjust/Correct.
CH Monthly
Check Calcium Hardness level to ensure it is
in the target range. Salt systems perform best
with Low Calcium Hardness levels.
50-150 ppm
High CH - lower with a stain & scale controller such as Arctic Pure, Best Defence, to help hold Calcium in suspen-
sion.
Sodium Chloride Monthly
Check the Sodium Chloride Level to ensure it is
in the target range.
Version 8 2000-2500 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.
Onzen Output As required
If spa use changes significantly, adjust the
output level of Onzen Chlorine Production (
“On” )
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.
Filter Every 3 Months Change the filter N/A Change the filter in accordance with Owners Manual instructions
Water Every 6 Months Change the water N/A 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.
Item Frequency Maintenance Task Target Range Maintenance
Onzen Owners Manual
102
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