Maximum Value And Minimum Value Alarms (Instrument Versions Only); Overdose Alarm (Only Instrument Versions); Under-Load And Over-Load Alarms - Etatron eOne Plus Notice D'installation, Emploi Et Entretien

If the activation of this alarm is frequent it is recommended that the operator checks the operating conditions
of the plant.

Maximum value and minimum value alarms (Instrument versions only)

The control pumps, by the metering, control the maintenance of the values of the electrochemical
parameters of the water (pH, Redox, Cl, ppm) within the parameters set during the programming of the pump.
During normal operation of the system anomalies can bring the measured values outside the normal values.
On the eOne pump two alarm thresholds can be set, respectively "MAXIMUM VALUE" and "MINIMUM VALUE".
Once exceeded, the operator must intervene to analyse the cause that led to the activation of this alarm and to
restore the correct operating conditions.
Common causes that can generate this alarm situation may be:
Through the appropriate menu, you can define the maximum value beyond which the pump stops, signalling
the alarm and activating the signalling relay. The operator must intervene immediately, analyse and remove the
possible causes that generated the alarm.

Overdose alarm (only Instrument versions)

As described in the previous paragraph, faults can occur during operation, and although the pump is working
properly, the set values are not achieved. In this case there is a potential danger due to an overdose.
Common causes that can generate this alarm situation may be:
To prevent these critical situations, within the programming menu, a time threshold in hours / minutes
defined as "OVERDOSE ALARM" can be set, which once exceeded the pump stops, signalling the alarm and
switching the relevant relay. You will need an operator to analyse and remov e the cause that generated the alarm
situation and to restore normal operating conditions.
Generally, the user knows the plant operating conditions and is able to evaluate the time necessary, of the
pump, to restore the correct operating values of the plant. It is recommended to add to the estimated time some
extra time to allow for a fair margin, always and however, to return to the correct operating conditions of the plant
itself.

UNDER-LOAD and OVER-LOAD alarms

The innovative HRS technology has enabled the development of a range of metering pumps that have the
ability to detect any changes in pressure inside the plant or malfunctions related to these variations. The pump
is able to provide useful information about the state of operation. Specifical ly, this is expressed in the availability
of two different types of signals.
a) UNDERLOAD: If during normal operation the pump has no fluid to be metered which may be caused by
problems on the suction line: clogged filter or damaged valves, the pump goes i nto UNDERLOAD status. This
condition is indicated by the signal on the display, the ALARM LED lights up and activates the corresponding
relay (if enabled). The pump stops after approximately 20 injections.
b) OVERLOAD: The pump during normal operation performs a check (in real time) on the pressure
conditions in the plant. If this pressure exceeds the maximum allowed (plate setting), the instrumentation of the
pump reacts reporting this state with a message on the display, the ALARM LED lights up and the relay activates.
Even in this case, the stopping of the pump occurs after 20 injections from the occurrence of the event. Under
particular conditions of pressure could occur the OVER-LOAD alarm even with air presence in the pump body. We
recommend that you take action to check the pump.
The UNDER-LOAD and OVER-LOAD functions can be enabled and disabled using the respective setup
menu. The factory settings for the UNDER LOAD and OVER LOAD functions are disabled.
120
ENGLISH

Lack of additive within the suction tank;

Obstruction of the pump;

Losses in the treatment system;

Incorrect concentration of additive dosed;

Sensor breakage;

Lack of additive within the suction tank;

Obstruction of the pump;

Losses in the treatment system;

Incorrect concentration of additive dosed;

Sensor breakage;