5 Installation at Site
21 of 52
Etaline-R
NOTE
Installing check and shut-off elements in the system is recommended, depending on
the type of plant and pump. However, such elements must not obstruct proper
drainage or hinder disassembly of the pump.
ü
The
suction lift line
has been laid with a rising slope, the suction head line with a
downward slope towards the pump.
ü
A flow stabilisation section having a length equivalent to at least twice the
diameter of the suction flange has been provided upstream of the suction flange.
ü
The nominal diameters of the pipelines are at least equal to the nominal
diameters of the pump nozzles.
ü
Adapters
to
larger diameters have a diffuser angle of approx. 8° to prevent
excessive pressure losses.
ü
The pipelines have been anchored in close proximity to the pump and connected
without transmitting any stresses or strains.
1.
Thoroughly clean, flush and blow through all vessels, pipelines and connections
(especially of new installations).
2.
Before installing the pump in the piping, remove the flange covers on the
suction and discharge nozzles of the pump.
CAUTION
Welding beads, scale and other impurities in the piping
Damage to the pump!
▷
Remove any impurities from the piping.
▷
If necessary, install a filter.
▷
Observe the information in
(
ð
Section 7.2.2.2, Page 34)
.
3.
If required, install a filter in the piping (see drawing: Filter in the piping).
1
2
Fig. 8:
Filter in the piping
1
Differential pressure gauge
2
Filter
NOTE
Use a filter with laid-in wire mesh of 0.5 mm x 0.25 mm (mesh size x wire diameter)
made of corrosion-resistant material.
Use a filter with a filter area three times the cross-section of the piping.
Conical filters have proved suitable.
4.
Connect the pump nozzles to the piping.
