Operation
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Integrated around-the-pump foam proportioning system is mounted.
Leaks during mounting affect the functionality of the integrated around-the-
pump foam proportioning system and the portable pump.
Dismantle integrated around-the-pump foam proportioning system
► The disassembly of the integrated around-the-
pump foam proportioning system takes place in reverse order to the
assembly.
► A lock nut is mounted on the pump housing connector to close the con-
nector.
Integrated around-the-pump foam proportioning system is disassem-
bled.
Operate integrated around-the-pump foam proportioning system
Preparation for startup
► Before startup determine the required water discharge quantity, e.g. 1
or 4 nozzles.
► Find out the required proportioning ratio of the foam compound and its
viscosity.
For further information, see the foam compound manufacturer's
instructions.
The integrated around-the-pump foam proportioning system does not work
for pressure inlets (supply/hydrant operation).
When operating the integrated around-the-
pump foam proportioning system note the following points:
The maximum foam compound suction lift is 2 m.
Loss 3.5 l/min (0.92 gpm) per 1 m increase in suction lift.
The regulating ball valve and the foam induction valve must be closed
for the priming process on the portable pump.
For low proportioning quantities up to approx. 2 l/min (0.5 gmp), it is
recommended to accelerate the priming process.
Position the regulating ball valve at 6-10 l/min (1.5-2.6 gpm) for
approx. 2 seconds.
The priming process of the foam compound lines is accelerated.
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