ISPA PORTABLE SPA 2009, Руководство пользователя

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2009 iSpa Owner’s Manual
LTR20091084, Rev. A
Clear
W
ater Plan
24
Testing and Adjusting Spa
Water
You have two types of testing methods to choose
from:
The • reagent test kit is a method which provides a
high level of accuracy. It is available in either liquid
or tablet form.
Test strips • are a convenient testing method com-
monly used by spa owners.
Balancing the Total Alkalinity
Total alkalinity (TA) is the measure of the total levels
of carbonates, bicarbonates, hydroxides, and other al-
kaline substances in the water. TA can be considered a
“pH buffer”. It is the measure of the ability of the water
to resist changes in pH level.
The recommended total alkalinity is 80 - 120
ppm .
If the TA is too low , the pH level will fluctuate widely
from high to low. Low TA can be corrected by adding
“pH-Alkalinity Up”.
If the TA is too high, the pH level will tend to be too
high and may be difficult to bring down. High TA can be
corrected by adding “pH-Alkalinity Down”.
When the TA is balanced, it normally remains stable,
although adding water with high or low alkalinity will
raise or lower the TA level.
Balancing the Calcium Hardness
Calcium hardness (CH) is a measure of the total amount
of dissolved calcium in the water. Calcium helps control
the corrosive nature of the spa’s water and is why soft
water is not recommended. The low calcium content of
soft water is very corrosive to the equipment and can
cause staining of the spa shell.
The recommended calcium hardness is 150 - 200
ppm .
If the CH is too low , add “Liquid Hardness Increaser”.
If the CH is too high, dilute the spa water with soft
water or, if this is not available, add “Stain and Scale
Defense”.
When the CH is balanced, it normally remains stable,
although adding soft water or very hard water will raise
or lower the CH level.