Installation, Hydraulic - ProMinent Sigma 1 Supplementary Operating Instructions

5

Installation, hydraulic

Store and transport the pump in such a way that its hygienic prop‐
erties are not impaired by the entrainment of feed chemicals, dirt
etc. In this respect, refer also to Regulation (EC) no. 852/2004 gov‐
erning food hygiene.
In addition, select the installation place in such a way as to ensure
that the hygienic properties of the pump are guaranteed throughout
all its life phases, including repair and maintenance.
The maximum particle size in the feed chemical: 0.3 mm.
The connection to the pipework system: it is the responsibility of
the operator to provide the corresponding components in compli‐
ance with DIN 11864.
The correct 2 O-rings in compliance with DIN 11864 R are supplied
separately. The O-rings are relevant in terms of hygiene, see
Ä Further information on page 6 and may not be replaced by
unsuitable O-rings. The O-rings will come into contact with food
products and, as such, are components relevant in terms of
hygiene.
Take into account the resistance of materials that will come into
contact with food products and the ProMinent Resistance List
when selecting the feed chemical - see the ProMinent Product
Catalogue or visit our website.
The construction of the discharge and suction valve of the pump
tapers the overall cross-section. Pay attention to the tapered cross-
section when designing cleaning processes. Therefore, if neces‐
sary, install a correctly fitting bypass with shut-off valves around
the liquid end to flush your system.
The smallest opening cross-section in the valve based on the nom‐
inal bore of the valve (e.g. DN 10 with ADN=10²•π/4) is as follows:
DN 10 at 47% of the nominal cross-section.
n
DN 15 at 51% of the nominal cross-section.
n
DN 25 at 42% of the nominal cross-section.
n
DN 32 at 45% of the nominal cross-section.
n
Always take into account the minimum flow velocity and the max‐
imum permissible priming pressure on the suction side,
11 'Technical data' on page 27
Installation, hydraulic
Ä Chapter
11