Danfoss APP 0.6 Buku Petunjuk - Halaman 4
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Halaman Cetak
Instruction
4
APP pump instruction APP 0.6-1.0, APP 1.5-2.5 and APP 3.0-3.5
2.4 General guidelines for calculation of
pressure losses
In order to avoid the risk of cavitation, the inlet
pressure at the pump must be in accordance
with the specifications mentioned in Data
sheet (521B0850).
2.5 General comments on
Filtration
A good filtration is vital to ensure a long and
trouble free life of the pump.
When selecting a filter or strainer, please note
that filter materials should be compatible with
water, i.e. should neither corrode or dissolve. Also
be aware of the electrochemical series of the
applied materials.
Main filter must have a fineness of 10 μm abs.
ß 10 >5000. The pressure loss across the filter
should be monitored.
180R9065 / 521B0733 / DKCFN.PI.013.C4.2T / 09.2012
The inlet line connection must be properly
tightened, as possible entrance of air will cause
cavitation.
The suction conditions can be optimized
according to below guidelines.
In smooth pipes and hoses
In smooth pipes and hoses
In 90° bends
Water tank
Must be made of corrosion-proof material such
as stainless steel or plastic and must be sealed to
prevent entrance of impurities from the environ-
ment.