GRE SIMPLEO 120 AR2085 Installation And Maintenance Manual page 5

Connect the cable that joins the electronic control box to the electrode. Put each terminal on
first, followed by the spring washer and then the nut. The polarity does not matter. Hold the
bottom nut with a spanner to avoid causing a leak around the connection.
3 – Accessory : Hydraulic grounding kit
The electrode in the optional hydraulic ground kit allows the static electricity in the
swimming pool to be bled off into the earth, whatever its source. The reason is that on occasions,
this static electricity can favour oxidation of metal parts that are in contact with the water in the
pool.
Connect the electrode to a grounding rod (not supplied), observing the regulations currently in force
in the country of installation.
4. START-UP
When the unit is first installed, or at the start of each new season, the following 7 points must
be checked and corrective action taken if necessary:
The water temperature should be above 15 °C
The pool water should be clean, with no algae or sediments
The TA and TH of the water must be correct:
• The TA, or Total Alkalinity, indicates the amount of bicarbonate salts dissolved in the water.
An excessively-high TA favours the appearance of deposits on the plates of the electrode and
on the walls of the pool. Adjust the TA of your pool according to the instructions of your pool
expert.
• The TH, or Total Hardness, indicates the hardness of the water, i.e., the quantity of calcium or
magnesium salts dissolved in the water. A high TH favours the appearance of limescale on the
plates of the electrode and on the walls of the pool. Reduce the TH of your pool according to
the instructions of your pool expert.
The pH of the water should be stabilised between 7.0 and 7.2
ATTENTION : Whichever system of chemical treatment is used, the efficiency of the
chlorine decreases rapidly as the pH increases. The higher or more unstable the pH is, the faster
limescale will form.
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