Zodiac - eXPERT pH 12 Salt Chlorinator with pH Control – 12 g/h - 74189

Zodiac – eXPERT pH 12 Salt Chlorinator with pH Control – 12 g/h

The eXPERT pH 12 is a salt chlorinator with built-in pH regulation. It produces 12 g/h of chlorine for pools up to 50 m³, draws 92 W and includes a 1.5 L/h pH dosing pump.

How the eXPERT pH works

The eXPERT pH is a salt water chlorinator made up of an electrolysis cell containing electrodes and a control box. As the salted pool water passes through the cell, the current from the electrodes turns chloride ions from the pool salt into chlorine. The chlorine dissolves in the water and disinfects it.

The chlorine then recombines into salt in the pool, so the process runs as a cycle. Each model in the range has a different chlorine output and a different pool volume rating, so check the figures on the page of the model you are considering.

Automatic pH regulation

In addition to disinfecting the pool automatically, the eXPERT pH measures the pH of the water with a glass pH sensor. When a correction is needed, the pH dosing pump injects corrective product into the water. This helps keep the water balance under control without manual dosing.

This version regulates pH only. Automatic regulation of chlorination by ORP is part of the separate pH/ORP versions of the eXPERT.

Control, display and safety

The control box has a large backlit touchscreen with an LCD, so the status of the pool can be read at a glance. The unit is quick to set up and start. Operating modes are Normal, Cover Mode and Boost Mode.

The unit can be controlled remotely with a smartphone application when it is linked to the Connect & Go pool automation system.

• Self-cleaning electrodes using polarity reversal
• Mechanical flow switch that stops production if there is not enough water in the cell
• Water temperature and salinity shown on the screen, with an indicator light if the water is too cold or the salt level is too low or too high
• Indicator light if the pH is outside the normal range

Installation

Installation and electrical connection must be carried out by a qualified installer in line with the manufacturer’s instructions and local regulations. The unit runs on a 230 V / 50-60 Hz supply and operates with water temperatures of 5-40°C.

The cell has a Ø 63 mm connection, with PVC reducers for Ø 50 mm pipes. It should be fitted last on the return line to the pool, after the filtration, any measuring probes and any heater. A bypass installation is recommended. The supplied flow switch goes just before the cell, and the cell should be easy to isolate and reach for cleaning.

The control box belongs in a ventilated, dry, frost-free technical room, away from pool chemicals. Do not store the pH-minus container directly under electrical equipment, because acid vapours can cause corrosion.

Salt, water balance and maintenance

Balance the water and add the salt before starting the unit. Switch the unit off while salt is added, and start it only once the salt has fully dissolved. Never add salt directly into the skimmers.

Day-to-day upkeep is light. Check and clean the electrodes, look after the pH probe and the peristaltic dosing pump, and calibrate the probe as described in the manual. Any work beyond simple user maintenance should be done by a qualified professional with the power switched off.