Section 3 – Operating Instructions
13
3.2
Checking and Setting the pH Set Point
1. Press to check the pH Set Point.
2. Use
the and
keys to change the pH Set Point.
3. Press to save the new pH Set Point.
4. To quit without making or saving changes, simply allow the unit to return to the normal display,
which occurs when no keys have been pressed for 10 seconds.
Notes
1. The
easyCHEM 770
controls pH within a 0.2pH control band”. If the Set Point is 7.40pH, the
Acid pump will start when the rises above 7.60pH and stop again when the reading reaches
7.40pH. The control band stops the pump being rapidly switched on and off when the reading
is close to the Set Point, thereby increasing the pump’s life.
2. The recommended pH range for swimming pools is pH7.40 to pH7.80. This pH range provides
the best combination of Chlorine effectiveness and compatibility with human skin and eyes.
3. The pH must be reading correctly and the pH Set Point must be set correctly in order for the
Chlorine control system to work effectively.
