-8-
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5. SOURCES OF ELECTRICITY/ENERGY
The WATA-Plus
®
can operate with a number of different power supply options.
USING THE POWER GRID
To use the device with a power grid or an alternating current generator, simply plug in the
power supply provided.
USING A SOLAR MODULE
For use with a solar module: Since the energy generated by a solar electric panel varies
depending on the amount of sunshine, it is strongly recommended to use a solar module
(see diagram) whose regulator will supply constant energy to the WATA-Plus
®
and protect
your battery, ensuring that the sodium hypochlorite solution is produced in the necessary
conditions. The size of the solar panel always depends on the amount of solar radiation at
the point of use. The battery should function with 12 VDC.
To determine the size of your solar module (solar electric panel, battery and regulator), we
recommend that you consult a specialist. To give an idea of what is required, the tables below
show approximately the capacity of the battery and peak power of the solar panel that are
necessary depending on your needs and on the amount of solar radiation.
WATA-Plus
www.antenna.ch
Photovoltaic module
Regulator
(STECA solarix PRS3030)
WATA-Plus
®
Sealed battery
SOLAR MODULE: CHOOSING THE BATTERY, CAPACITY NEEDED [AH]
Minimum capacity needed for a lead-acid battery (12 V) with a depth
of discharge of 50%
1 production run of 15L per day
120 Ah
2 production runs of 15L per day
240 Ah
SOLAR MODULE: CHOOSING THE SOLAR ELECTRIC
PANEL, PEAK POWER NEEDED [WC]
Daily solar radiation at the place of use*
7 kWh/m2/d
5 kWh/m2/d
3 kWh/m2/d
1 production run of 15L per day
157 Wc
222 Wc
369 Wc
2 production runs of 15L per day
314 Wc
444 Wc
738 Wc
* For an example, refer to the following website site: https://eosweb.larc.nasa.gov/
6. PROCEDURE FOR
PRODUCING SODIUM
HYPOCHLORITE SOLUTION
The production of sodium hypochlorite solution differs according to the quality of the
salt used. If the salt is pure or refined, follow procedure 6.1. If it is coarse or dirty, follow
procedure 6.2.
6.1 PREPARING THE SOLUTION FOR ELECTROLYSIS
WITH PURE OR REFINED SALT (15L BASE)
1
Pour 15 litres of clear water into a clean plastic container.
2
Add 375 grams of refined salt.
3
Mix thoroughly until the salt is completely dissolved.
4
Immerse the body of the WATA-Plus
®
in the salt water.
The device should be completely submerged.
15 L
WATA-Plus
www.antenna.ch
