AWG S2/M2 Originalbetriebsanleitung Seite 27

AWG | Fittings | Adjustable foam nozzles S2 / M2 and S4 / M4
If the device is switched to 'medium expansion foam', four outer swirlers
functioning as turbulence sources cause the foam agent/water mixture
with the aspirated air to rotate. The mixture flows through the nozzle bores,
rips open and reaches the conversion screen evenly.
If the device is switched to 'low expansion foam', the foam agent/water
mixture reaches the inner tube through four smooth nozzle bores, where it
is swirled with the aspirated air by turbulence in the tube and a jet-breaker
screw. The flow does not pass through the conversion screen.
The supply of the foam agent/water mixture is regulated by opening and
closing the ball valve.
The adjustable foam nozzles are equipped as standard with a pressure
gauge and a dirt trap sieve.
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
M1108B10 | Rev. 03-08/24