KSB Amarex User Manual

5 Installation at Site
25 of 82
Amarex
2573.820/02-EN
Floor temperature Minimum curing time
Dry concrete Wet concrete
[°C] [min]
≥ 0 300 600
≥ -5 300 600
5.3.1.2 Connecting the piping
DANGER
Impermissible loads acting on the flange of the duckfoot bend
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 without
transmitting any stresses or strains.
▷ Observe the permissible flange loads.
▷ Take appropriate measures to compensate for thermal expansion of the piping.
NOTE
When the pump set is used for draining low-level building areas, install a swing
check valve in the discharge line to avoid backflow from the sewer system.
CAUTION
Critical speed
Increased vibrations!
Damage to mechanical seals and bearings!
▷ Install a swing check valve in longer riser pipes to prevent the pump from
excessive running in reverse.
When fitting a swing check valve, make sure that the unit can still be vented
properly.
F
x
F
z
F
y
M
y
M
z
M
x
Fig.6: Permissible flange loads
Table12: Permissible flange loads
Nominal flange
diameter
Forces
[N]
Moments
[Nm]
F
y
F
z
F
x
∑F M
y
M
z
M
x
∑M
50 1350 1650 1500 2600 1000 1150 1400 2050
65 1700 2100 1850 3300 1100 1200 1500 2200
80 2050 2500 2250 3950 1150 1300 1600 2350

KSB Amarex Specifications

General

Material	Cast iron, stainless steel
Operating mode	Continuous
Type	Submersible Pump
Application	Sewage
Explosion protection	Available with explosion protection
Frequency	50 Hz, 60 Hz
Impeller Type	Multi-vane