Jacuzzi Maxi Serie Manual De Instalación página 42

Water disinfection also using active oxygen makes the water
pure, clear and pleasant when in contact with the skin and hair.
Active oxygen is a delicate alternative to chlorine and may
substitute it as a disinfectant. It is also effective in preventing
the formation of algae.
• Jacuzzi ® offers a kit for water treatment based on active oxy-
gen, which along with the aforementioned benefits, offers an-
other which should not be underrated: when the spa is emptied,
the water can be drained into the sewers without the need for
costly purifying and it can even be used to water the garden.
• Active oxygen is especially indicated if the spa is not used in-
tensively. At any rate, after a long period during which the spa
is not used, it is advisable to carry out a super-chlorination treat-
ment, also known as chlorine based shock treatment. The use
of active oxygen does not compromise this operation, thus mak-
ing use of chlorine necessary only in this case.
• A shock treatment can be carried out using active oxygen,
even if this is not as effective as chlorine. In this case, the sug-
gested amount is about three times more than that used for
normal maintenance treatment.
• The water treatment kit offered by Jacuzzi
oxygen-based tablets and an activation liquid, which increases
the effectiveness of the treatment and ensures action against
algae. These products are to be placed directly into the water
of the spa, even if it is preferable to place the tablets in the
skimmer basket or in the floating dispenser (available from au-
thorized Jacuzzi ® dealers).
For doses and methods of use, refer to the instructions on the
package.
Characteristic components and definitions
Before beginning disinfection of the MaxiJacuzzi, it is a good idea
to know which are the characteristic components and how they
interact; it is essential to establish the correct values by using
an appropriate test-kit, so as to plan optimum treatment.
To purchase a test-kit and to learn how to use it, contact spe-
cialized service engineers or your dealer.
A final consideration: the quantity of chemical additives that are
used for water treatment are expressed in various units of meas-
ure; the most common are "ppm" (parts per million), "mg/l" (mil-
ligrams per litre) and "g/m
all the same thing. An example will show more clearly the
amounts of the various substances required.
For example, if the MaxiJacuzzi can contain 700 litres of water
and that the level of chlorine must be 2 mg/l; this means that each
litre of water should contain 2 mg of chlorine. Therefore, if we
multiply 700 x 2 we obtain the total quantity of disinfectant, that
is 1400 mg; on the other hand, taking into account that 1000 mg
is equivalent to 1 g, dividing 1400 by 1000 we have 1.4 g, and
this means that to reach a value of 2 mg/l (or ppm, or even g/m
we must add 1.4 grams of chlorine.
® includes active
3 " (grams per cubic metre), which are
pH
This parameter represents the concentration of hydrogen
ions (H + ) dissolved in water and the acidity or alkalinity of
the water, measured on a scale from 0 to 14 (from 0 ÷ 7 =
acid zone; 7 ÷ 14 = alkaline zone).
The ideal value for a MaxiJacuzzi must be between 7.2 and 7.4;
in fact, if the water has higher values, the disinfectants become
less effective, while scale deposits increase, to the detriment
of the MaxiJacuzzi surfaces and its components.
pH values lower than 7.2 also reduce the effectiveness of dis-
infectants; they promote corrosion of MaxiJacuzzi metallic
components and can cause irritation for the eyes and skin.
The pH level can be controlled by appropriate addi-
tives, which allow the values to be raised or lowered
according to each situation.
Total Alkalinity (TA)
This parameter represents the quantity of some alkaline sub-
stances (carbonates, bicarbonates and hydrates) in the water.
With a low TA value (less than 80 mg/l), the pH may change
unexpectedly, with sudden and uncontrollable oscillations. This
makes it nearly impossible to maintain good water quality.
A high TA value (greater than 150 mg/l), even if it does not
involve great inconvenience, can lead to water cloudiness and
cause problems related to the pH level.
To increase the TA value bicarbonate of soda can be
used, while to lower it dry acid is recommended. Refer
to the instructions on the packets for the quantity and
methods; if in doubt, contact a specialized dealer.
WARNING
If the alkalinity level becomes excessive, you
should completely drain the system, thoroughly
clean all the surfaces of the MaxiJacuzzi
re-fill with fresh clean water.
water is very hard, you are advised to fit a sof-
tener upstream of the water supply or condition
the water with an anti-scaling product.
Water hardness
Water is called "hard" or "soft" according to the quantity of
calcium and magnesium salts present in solution.
Hardness, which can be controlled with appropriate kits that
are found on the market, is expressed in French degrees (°f)
or in mg/l of calcium carbonate (CaCO 3 ).
Hard water, that is with a carbonate content of over 150 mg/l
3 ) (>15 °f), can easily cause scale deposits on the tub sides and
the hosing.
To resolve these problems it is advisable to install a cation
resin scale remover (softener), adjusting the minimum resid-
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® and
In areas where the