AWG M2 Originalbetriebsanleitung Seite 27

AWG | Fittings | Medium expansion foam nozzle M2, M4, M8
3 Description
3 .1 Function
The AWG Medium expansion foam nozzles are used to produce medium
expansion foam in accordance with DIN EN ý16712-3ý. The water com-
ponents of the medium expansion foam cool the fire surface. The foam
blanket prevents oxygen access to the burning material. Preventive foaming
protects fire-endangered materials against inflammation.
The foam agent/water mixture produced at a constant admixing rate in
the separate inductor is pressurised and sprayed in a full-cone nozzle.
The foam agent/water mixture is swirled with the aspirated air, producing
a medium expansion foam with high extinguishing properties.
The supply of the foam agent/water mixture is regulated by opening and
closing the ball valve.
3 .2 Intended use
>
Fire-fighting of class A fires
>
Fire class B: Fighting fires involving non-polar liquids, e.g. petrol or oil
as well as polar liquids
>
Preventive foaming of fire-endangered materials
>
Only for use with synthetic multi-grade foaming agents
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 foaming agents
>
Conversion or modification
>
Operation in technically unsound condition
>
Operation outside the approved characteristic values
>
Fitting of spare parts that are not approved or not suitable for the
operating conditions
27
DESCRIPTION
M1107B10 | Rev. 03-08/24