Etatron eOne MF Series, Operatinginstructions And Maintenance

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ENGLISH
Flow Diagram MODE mA
ALARMS
The MF Metering pump has the ability to monitor the proper functioning of the system and signal some alarm situations
that may occur. It can specifically detect the following alarms:
•
Level alarm
•
Flow switch alarm
•
Meter impulse alarm that intervenes in the 1xN (M)
• Meter impulse alarm in PPM
•
Meter impulse alarm in ml X m
3
•
OVERLOAD alarm
•
UNDERLOAD alarm
All alarm conditions are indicated by the lighting of the LED on the control panel and on the display. The switching of the
alarm relay also occurs (contacts 19, 20 and 21 fig.9) if enabled, where applicable, by the different configuration menus.
Relay switching occurs in all situations where enabling doesn't occur.
Level alarm
The floating level sensor signals when the liquid to be dosed into the tank is finished. The pump will stop, indicating the
alarm status. Connect the level sensor to the pump terminal box (see fig. 9), in correspondence to terminals 5 and 6, and
introduce it into the tank containing the additive to be dosed. In order to prevent false alarms due to fluctuations in the liquid
level itself the alarm occurs with a delay of at least 3 sec.
Flow switch alarm
The electronic circuit of the pump, registers every blow given by the electromagnet, which is matched by an injection of
product from the pump body. In some cases the injection may not occur as a result of wear of pump body parts, the valves,
the O-rings, the presence of air, etc.
In the pumps equipped with a flow switch (hydraulic device which shows the actual passage of fluid) if the missed
injections occur within the sampling interval exceed the set parameters, the flow switch alarm triggers and the injections stop.
The parameters to set are the following: