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VERSION 02/2016
OPERATING MANUAL
5.11
FEED PUMP (OPTION)
A feed pump can be used with high-viscosity products or longer feed lines.
Dimensioning of the feed pump
The piston pumps pump the working material to the product output with up and down
strokes but only draw in new product on the up stroke. The feed pump therefore has to
pump twice the volumetric fl ow.
The maximum product pressure at
the pump inlet of the PROTEC 2K
fl uid sections may not be exceeded.
Protection of feed pump
If the maximum pressure of the feed pump is lower than the maximum pressure of
the main pump, this could be exceeded if the main pump malfunctions. The feed
pump and connection line must therefore be protected from excessive overpressure.
An overpressure valve must then be installed between the feed pump and main pump.
Observe the fl ow direction during installation.
ORDER NUMBER DOC2352824
Feed pump
B_05173
Feed pump
!
!
Pressure relief valve
PROTEC 2K
Main pump
Main pump
44
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