KSB Vitachrom, Installation & Operating Manual

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5 Installation at Site
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Vitachrom
3. If required, install a filter in the piping (see drawing: Filter in the piping).
1
2
Fig. 7: Filter in the piping
1 Differential pressure gauge 2 Filter
NOTE
Use a filter with laid-in wire mesh (mesh width 0.5 mm, wire diameter 0.25 mm) 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.
CAUTION
Aggressive flushing liquid and pickling agent
Damage to the pump!
▷ Match the cleaning operation mode and duration of flushing and pickling to
the casing materials and seal materials used.
5.3.2 Permissible forces and moments at the pump nozzles
No piping-induced forces and moments (from warped pipelines or thermal
expansion, for example) must act on the pump.
The discharge and suction-side pipes must be anchored in such a way that no forces
and moments may act on the discharge and suction nozzle of the pump casing.
Otherwise, there is a risk of the impeller rubbing against the pump casing on the
suction-side, due to the narrow clearance between the impeller and the suction-side
floor of the pump casing.
5.3.3 Vacuum balance line
NOTE
Where fluid has to be pumped out of a vessel under vacuum, installing a vacuum
balance line is recommended.
The following rules apply to vacuum balance lines:
▪ Minimum nominal line diameter 25 mm.
▪ The line extends above the highest permissible fluid level in the vessel.