Zodiac pH expert Instructions For Installation And Use Manual page 31

3.5.6 "OFA ti me" menu
This appliance is fi tt ed with a safety mechanism to avoid any risk of correcti on product overdose, for example
in the event of a problem with the sensor. This safety mechanism, called the "OFA" (= Over Feed Alarm),
pauses the appliance if it has not reached the set point within a given ti me limit. A high set point value is
strongly recommended to avoid any unplanned and/or unjusti fi ed triggering (a ti me of fi ltrati on in excess of
4 hours is recommended for large pools and/or pools or with high alkalinity levels).
The over feed safety mechanism operates in two main steps:
•
reached the set point
•
safety mode.
If fi ltering stops and restarts while the appliance is in "OFA Stop" status, the appliance will acti vate an "OFA
Test" mode for 1 hour to make sure that the measurement from the sensor is correct.
On completi on of this "OFA Test" mode:
if the set point has been reached = the appliance remains in normal mode
-
if the set point has not been reached: the appliance switches to "OFA Alarm" mode and make an injecti on
-
of corrector product
if the set point has sti ll not been reached aft er the "OFA Alarm" mode is complete (=25% of total OFA set
-
ti me), the appliance switches to "OFA Stop" (thus stopping any product injecti on process) and safety mode
and will remain in this state unti l manual interventi on.
To reset this safety measure and restart the appliance, press the
in good conditi on and is calibrated.
Special over feed safety functi on:
In order to prevent false alarms just aft er the appliance is installed, the over feed safety can be deacti vated
for 24 or 48 hours:
• Press , and
• Press , and
3.6.7 "Calibrati on" menu
It is possible to perform calibrati on in a single step for pH7 (quicker but the measurements will be less reliable
in ti me), or to remove this functi on (we advise strongly against this, except in the case of pools under a
maintenance contract).
3.6.8 "Filtering" menu
This appliance is fi tt ed with a double electric power supply making it possible to keep the appliance switched on
to carry out pH sensor calibrati on when fi ltering is not operati onal. This functi on can however, be deacti vated
in the case of a diff erent electrical connecti on (only carried out by a professional).
• The appliance will no longer take fi ltering status into considerati on and may inject corrector
product when there is no fl ow in the piping. This deacti vati on is only valid if the mains power
cord is coupled to the fi ltering system.
3.6.8 Resetti ng the appliance
All factory setti ngs can be restored.
•
Turn off the appliance
•
Turn the appliance back on by pressing
• Select "Yes" or "No" using the
fl ashes aft er 75% of the programmed ti me has elapsed without having
is displayed when the ti me has elapsed. The appliance then switches to
at the same ti me to deacti vate the safety mechanism for 24 hours
at the same ti me to deacti vate the safety mechanism for 48 hours
and at the same ti me:
and keys, then confi rm by pressing
key. First make sure that the sensor is
.
EN
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