AFRISO Eurovac HV Betriebsanleitung Seite 73

4.4 Function
Via the suction line, the vacuum pump installed in the product generates a
vacuum in the interstitial space of the tank (vacuum range). The pressure
switch measures the pressure in the interstitial space via the measuring line
and keeps it at a constant level together with the vacuum pump.
If a leak occurs in the inner or outer wall of the tank (tank wall or the leak pro-
tection lining) either above or below the level of the stored liquid or the ground
water, and if this leak is greater than the suction capacity of the vacuum
pump, the vacuum will drop. When the alarm threshold for the switching point
is reached, the red LED lights permanently and the audible alarm is acti-
vated. The relay is energised. The audible alarm can be switched off by
pressing the Acknowledge button.
4.5 Relay output
The product is equipped with a potential-free contact. If no alarm is present,
the relay is de-energised. In case of an alarm, the relay is energised.
The product can be operated with or without additional external equipment,
for example:
• Visual and audible alarm units
• Remote alarm equipment
• Building control systems
4.5.1 Products with EnOcean® wireless module
In the case of an alarm, the wireless module transmits the alarm message
via EnOcean® wireless technology in addition to the visual and audible
signals.
4.6 Approvals, conformities, certifications
The product complies with:
• EMC Directive (2014/30/EU)
• Low Voltage Directive (2014/35/EU)
• Construction Products Directive 305/2011 (EN 13160-2:2003)
• RoHS Directive - 2011/65/EU
The product with EnOcean® wireless also complies with:
• Radio Equipment Directive, RED (2014/53/EU)
Product description
Eurovac HV
EN
15