afriso FloCo-Top-2K Notice Technique page 40

4.2.1 Single / multiple filtration
If the nozzle throughput is < 20 l/h, the changeover valve must be set to
multiple filtration (default setting).
In the case of multiple filtration, the fuel that is in the pump circuit is again
passed through the filter insert and filtered once more. With multiple
throughput, a filter insert with the specification "5 - 20 μm" can achieve a
filtration of 5 μm, for example.
The finer the burner nozzle, the finer the filtration has to be in order to
avoid malfunctions caused by dirty nozzles.
In the case of systems with a nozzle throughput of > 20 l/h, the changeo-
ver valve must be set to single filtration.
Fig. 2: Switching from single to multiple filtration
Product description
A
B
A. Multiple filtration at a nozzle
throughput of < 20 l/h
B. Single filtration at a nozzle
throughput of > 20 l/h
FloCo-Top-2
EN
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