Jacuzzi Maxi Andros Manuel D'installation page 36

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 pur-
chase a test-kit and to learn how to use it, contact specialized
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 wa-
ter and that the level of chlorine must be 2 mg/l; this means
that each litre of water should contain 2 mg of chlorine. There-
fore, if we multiply 700 x 2 we obtain the total quantity of dis-
infectant, that is 1400 mg; on the other hand, taking into ac-
count 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 3 ) we must add 1.4 grams of chlorine.
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
substances (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.
® includes active
3 " (grams per cubic metre), which are
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. Re-
fer to the instructions on the packets for the quanti-
ty and methods; if in doubt, contact a specialized
dealer.
CAUTION
If the alkalinity level becomes excessive, you
should completely drain the system, thoroughly
clean all the surfaces of the MaxiJacuzzi® and
re-fill with fresh clean water.
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 (>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-
ual hardness to 10 °f (100 mg/l of CaCO 3 ). As an alterna-
tive, you can use special chemical products (called organic
or inorganic sequestrants) that inhibit the formation of car-
bonate 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 wa-
ter supplies or in the case of particular geological areas, it
is convenient, in order to avoid corrosion phenomena on the
MaxiJacuzzi 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 treat-
ment, or shock treatment. This is to disinfect the tub com-
pletely. he frequency of super-chlorination depends on
T
the frequency of use of the MaxiJacuzzi. Afterwards, main-
tenance treatments will be sufficient.
Fill the MaxiJacuzzi
i
( 2, detail A).
36
® up to the level mark on the skimmer