Richter MNK, Safety And Installation Instructions Manual

Page: 19 / 32

RMI-B, RMA-B
– Before starting alignment, undo the screw fitting of the support bracket from the adapter and
motor.
– Align the unit so that there is no tension and retighten the screws.
– Use supports in the direct vicinity of the bolts foundation/base plate.
2.5.5 Piping
Before the pump is installed, both, the suction and supply lines as well as the discharge line are to
be cleaned. Dirt or damage to the sealing surfaces is best avoided if the flange covers remain on
the flanges until just before installation. Use flange gaskets suitable for the medium. The screw
tightening torques in
Ä
Chapter 2.5.11 “Anzugsmomente / Tightening torques” on page 24 are to
be observed for tightening the flange screws.
2.5.5.1 Nom. size
The operating design point of a centrifugal pump lies at the intersection of the pump curve and the
pipe curve, Fig. 4. The pump curve is provided by the pump manufacturer. The pipe curve is deter-
mined using diagrams or PC programs.
A
B
C
H
Q
Fig. 4: Determine the operating design point
A Pump curve
B Operating design point
C Pipe curve
Under no circumstances can the nominal size of the piping be derived from the connected nominal
size of the pump. The pipe nominal size can also be determined using the flow rate as a rough
guide.
( )
=
(
3
)
(
2
)
Fig. 5: Flow rate formula
Safety and installation instructions for Richter pumps
Richter Pumpen / pumps
Installation > Piping 19