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Firemiks AB
Instruction manual version: SPFA FM
P.O. Box 8155, 104 20 STOCKHOLM, Sweden
phone +46-8-551 196 10 - [email protected] - www.firemiks.com
Place the concentrate tank and FIREMIKS as close together as is
practically possible.
The concentrate feed line connects the concentrate tank with the
Selector valve Dosing/Flushing (No. 4 on Flow chart) on the
concentrate pump inlet.
The internal diameter on concentrate feed system must have equal
diameter as the inlet of the Selector valve Dosing / Flushing(No. 4 on
Flow chart), or one size larger if viscosity is on the higher end of the
allowed viscosity. (see also Appendix 2, Dimensional Drawing).
Avoid sharp 90-degree bends and keep the concentrate feed line as
free as possible from other flow restrictions (bends, bottom valves,
unnecessary filters).
Avoid elevation changes in the line where air bubbles may
stagnate and cause head losses and cavitation.
Any other check
valves, ball valves, etc. should also have at least the same internal
diameter as the Selector valves.
Additional valves are discouraged as they increase the risk of operator
error and could cause dry running (see 4.9) if a valve is unintentionally
closed.
The concentrate feed line must be equipped with a free flowing filter of
300 μm or less; the filter must be positioned as close as possible to
the pump feed attachment. Even if the concentrate liquid to be used is
clean, the filter must be installed to prevent foreign bodies present in
the plant such as swarf, welding slag or scaling from entering the
pump.
It is advisable to put a transparent suction tube/hose just before the
inlet of the concentrate pump to make it easier to see when/if the
concentrate feed hose is completely filled with the concentrate. This
also minimizes the risk for tensions from a concentrate pipe to be
transferred to the concentrate pump.
It is very important that there are no air leakages in the concentrate
feed line anywhere between the tank and the concentrate pump. The
system should be pressure tested (preferably with a manual hand
pump up to about 2 Bar) before the start, to expose possible air
leakages, and designed in such a way that its seal is guaranteed to
last in time.