5 Installation at Site
21 of 72
Sewatec (60 Hz)
Table 11:
Curing times of mortar cartridge
Floor temperature
Curing time
[°F]
[°C]
[min]
23 to 32
-5 to 0
240
32 to 50
0 to +10
45
50 to 68
+10 to +20
20
> 68
> +20
10
5.4 Piping
NOTE
When installing pumps in a piping system prevent any resonances at the usual
excitation frequencies (1x and 2x rotational frequency, rotational noise) in the
foundation and in the connected piping. See DIN ISO 10816-3.
5.4.1 Connecting the piping
DANGER
Impermissible loads acting on the pump nozzles
Danger to life from hot, toxic, corrosive or flammable fluids escaping!
▷
Do not use the pump as an anchorage point for the piping.
▷
Anchor the pipelines 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.
▷
Take appropriate measures to compensate thermal expansion of the piping.
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
Suction lift lines
have been laid with a rising slope, suction head lines with a
downward slope towards the pump.
ü
A flow stabilization 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 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.
1.
Before installing the pump in the piping, remove the flange covers on the
suction and discharge nozzles of the pump.
2.
Connect the pump nozzles to the piping.
