AWG FD Z2 Originalbetriebsanleitung Seite 27

AWG | Fittings | Inductors FD Z2 and Z4
3 Description
3 .1 Function
The AWG Inductors are used to feed liquid foam concentrates into a hose
line. The inductors are intended for connection to foam branch pipes that
are used to generate low or medium expansion foam in accordance with
DIN EN 16712-3.
The main amount of the water entering at high speed through the suc-
tion chamber generates through the Venturi principle a negative pres-
sure, which causes the foam concentrate to be aspirated via a Storz
D-coupling. The required admixing rate is chosen by rotating the rate
setting sleeve.
A spring-loaded check valve in the suction inlet prevents the ingress of
water into the foam line when the foam nozzle is closed.
3 .2 Intended use
>
Use in an extinguishing system for fighting fires of fire class A
>
Fire class B: Use in an extinguishing system for fighting fires involving
non-polar liquids, e.g. petrol and oil, as well as fighting fires involving
polar liquids
>
Aspiration of synthetic multi-grade foam agents
>
Aspiration of additives
Only use the device in technically sound condition and in accordance
with the intended purpose and with safety and potential dangers in mind.
3 .3 Foreseeable misuse
>
Use of unsuitable foam agents or additives
>
Conversion or modification
>
Operation in technically unsound condition
>
Operation outside the approved characteristic values
>
Fitting of accessories that are not approved or not suitable for the
operating conditions
27
dEScription
M1008B10 | Rev. 03-08/24