Afriso EURO-INDEX 43790, Руководство по эксплуатации

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Product description
Europress 9
Drying filters (not included) are used to dry the air compressed for
the operating pressure to a residual humidity level of approx. 10 %
and a filter is used to remove the dust particles. The dried and fil-
tered air is pumped into the interstitial space of the tank. Pressure
fluctuations in the interstitial space are compensated for by the pump
and the safety valve.
3.1 Function
The green LED “Supply ON” lights up when mains voltage is avail-
able and the device is ready for operation.. The pump integrated into
the leak detector draws in air via the drying filter and pumps it via the
pressure line to the tank's interstitial space until a constant overpres-
sure has been built up.
The pressure switch measures the pressure in the interstitial space
via the measurement line and keeps it at a constant level together
with the pump. The safety valve at the pump opens if the pressure is
too high in order to prevent the interstitial space test pressure (0.6
bar) from being reached.
If a leak occurs in the tank's inner or outer wall either above or below
the level of the stored liquid or the ground water, and if this leak is
greater than the pump's pumping capacity, the overpressure will
drop. When the alarm threshold is reached, the red LED “Alarm” and
the audible alarm are activated and the relay is energised.
The audible alarm can be muted with the button “Mute”. The switch-
ing point for "Alarm on" is at least 30 mbar higher than the static
pressure of the stored liquid or the ground water.
3.2 Operating modes
Europress is equipped with an output relay to transmit the alarm sig-
nal to additional external devices. If no error condition is present, the
relay is de-energised. In the case of an alarm, the relay is energised.
Europress can be operated with or without additional external de-
vices. The following types of additional devices can be used: visual
and audible alarm units, telecommunication devices, building control
systems, building automation systems, etc.