43
ual hardness to 10 °f (100 mg/l of CaCO
3
. As an alternative,
you can use special chemical products (called organic or in-
organic sequestrants) that inhibit the formation of carbonate
crystalline.
In the case of water with a hardness lower than 10 °f (100 mg/l
of CaCO
3
), which can occur when using mountain water sup-
plies or in the case of particular geological areas, it is con-
venient, in order to avoid corrosion phenomena on the Maxi-
Jacuzzi metallic components, to use suitable products to block
and neutralize the excessive amounts of CO
2
(carbon dioxide)
that are present.
TREATMENTS
Super-chlorination (or "shock treatment")
Just after installation, and after long periods of non-use, the
MaxiJacuzzi must be subjected to super-chlorination treatment,
or shock treatment. This is to disinfect the tubcompletely. The
frequency of super-chlorination depends on the frequency of
use of the MaxiJacuzzi. Afterwards, maintenance treatments will
be sufficient.
• Fill the MaxiJacuzzi up to the level mark that is on the skim-
mer (
2, detail B).
• Check that the pH, the total alkalinity TA and the water hard-
ness are correct; if not, act according to the recommendations
in the related paragraphs.
CAUTION
Before proceeding with the addition of disinfec-
tant always check, and if necessary correct, the
pH value.
• Add 5 ÷ 10 mg/l of chlorine in quick dissolving granules
to the water in the spa
.
CAUTION
Do not use the skimmer basket to introduce
chemical additives. If solid additives are used, y-
ou are advised to dissolve them beforehand in a
bucket or use a basket available from specialist
distributors. Follow the manufacturer's specific
instructions and recommendations for use of the
above substances.
• Set the filtering cycle (see corresponding paragraph) and let it
operate until the level of chlorine residue in the water drops to
normal levels (2 ÷ 3 mg/l); this normally occurs after a few
hours (it is advisable, however, to leave the filtering system in
operation for at least half a day).
• As an alternative, you can also activate rapid filtering (“Instant
Clear”, see the corresponding chapter; this function lasts about 45
minutes). When the time is up, it is advisable to check the remain-
ing level of free chlorine (see above) and to run the function again
in order to achieve the recommended values (2 ÷ 3 mg/l).
CAUTION
Do NOT use the spa until the level of free chlo-
rine has dropped to normal levels (2÷3 mg/l).
Do not use the thermal cover during super-chlo-
rination as the chlorine can attack the metal parts
(chrome-plated accessories etc.). Other values of
chlorine or bromine (> 10 mg/l) may not be de-
tected by the test kit reactants, while there is ac-
tually an excessive amount present.
If disinfectants have been added in amounts over
10 mg/l, the operator must forbid, as his re-
sponsibility, the use of the MaxiJacuzzi
®
. The
dosage and method of use require qualified per-
sonnel.
Normal chlorination (or regular maintenance)
To ensure quality and avoid possible deterioration, the wa-
ter must be treated, or chemically conditioned.
The water level must be kept constant to guarantee correct
system operation.
• Check that the , pH the total alkalinity TA and the water hard-
ness are correct; if not, act according to the recommendations
in the related paragraphs.
• Add the slow dissolving stabilised chlorine to the water
of the spa.
WARNING
Do not use the skimmer basket to introduce
chemical additives. If solid additives are used, y-
ou are advised to dissolve them beforehand in a
bucket or use a purposely-designed basket avail-
able from specialist distributors.
The Manufacturers specific instructions and rec-
ommendations must be carefully followed for use
of the above substances.
When chlorine is added to the water, part of it is wasted on con-
tact with impurities, a part (combined chlorine) blends with
nitrogenated substances forming chloramines and another
part remains available for disinfection: this is the so-called
free chlorine, which should be present in the amount of 2÷3
mg/l.
NOTE: if the chloramines level (combined chlorine with nitro-
genated organic substances) becomes high, it can cause the
so-called “chlorine smell”, and also irritating effects for the
eyes and skin. In this case, it is advisable to carry out super-
chlorination (shock treatment).
• Set the water filtering (or rapid filtering) cycles according to
the intended use of the MaxiJacuzzi
®
.
Do not let the free chlorine level drop to below the rec-
ommended value (2÷3 mg/l).
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