KSB CTN - Piping; Connecting the Piping

5 Installation at Site
21 of 76
CTN / CTN-H
5.4 Piping
5.4.1 Connecting the piping
DANGER
Impermissible loads acting on the pump nozzles
Danger to life from escaping hot, toxic, corrosive or flammable fluids!
▷ Do not use the pump as an anchorage point for the piping.
▷ Anchor the pipes in close proximity to the pump and connect them properly
without transmitting any stresses or strains.
▷ Observe the permissible forces and moments at the pump nozzles.
(ðSection5.4.2,Page22)
▷ Take appropriate measures to compensate for thermal expansion of the piping.
CAUTION
Incorrect earthing during welding work at the piping
Destruction of rolling element bearings (pitting effect)!
▷ Never earth the electric welding equipment on the pump or baseplate.
▷ Prevent current flowing through the rolling element bearings.
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 nominal diameters of the pipelines are equal to or greater than the nominal
diameters of the pump nozzles.
ü Adapters to larger nominal diameters are designed with a diffuser angle of
approx. 8° to avoid excessive pressure losses.
ü The pipelines have been anchored in close proximity to the pump and connected
without transmitting any stresses or strains.
CAUTION
Weld beads, scale and other impurities in the piping/tank
Damage to the pump!
▷ Free the piping from any impurities.
▷ If necessary, install a filter.
▷ Observe the instructions in (ðSection7.2.2.3,Page41) .
1. Thoroughly clean, flush and blow through all vessels, pipelines and connections
(especially of new installations).
2. Remove the flange covers on the suction nozzles and flanged bends of the
pump before installing the pump in the piping.
3. Check that the inside of the pump is free from any foreign objects. Remove any
foreign objects.
4. Connect the pump nozzles to the piping.