Section 6 – User Settings
36
6.3.2.3 Setting up the pH Control function
1. Plug
the
easyCHEM 770
mains lead into the mains power outlet to switch the controller on.
2. Press .
3. Press until “
→
pH Control
” is selected and press
.
4. The Control Direction menu is now displayed, for example…
>Too High
↑↓
Too Low Enter
The current selection is highlighted by the arrow.
“
Too High
” means that the
easyCHEM 770
will add acid to reduce the pH when it gets too
high. This is the normal setting for pools using Sodium Hypochlorite as Chlorine.
“
Too Low
” means that the
easyCHEM 770
will add alkali when the reading gets too low.
Press
or
until the desired setting is selected and press
.
5. The current Control On Time is now displayed, for example…
pH ON Time
1 min
↑↓
Enter
Press
or
until the desired On Time is set and press
.
Enter Zero minutes On time to disable the pH pump.
6. The current Control Off Time is now displayed, for example…
pH OFF Time
5 min
↑↓
Enter
Press
or
until the desired Off Time is set and press
.
6.3.2.4 Default pH Control Settings for Pool Sizes
The following table details the default pH control settings for the various pool sizes…
Spa
20,000
Litres
50,000
Litres
100,000
Litres
Tube Size
Large Small Large Small Large Small Large Small
pH On Time
30 secs
1 min
s
1 min
s
3 mins
1 min
s
3 mins
2 mins
6 mins
pH Off Time
5 mins
5 mins
5 mins
5 mins
5 mins
5 mins 15 mins
15 mins