KSB Amarex N, Operating Manual

Page: 23 / 72

5 Installation at Site
23 of 72
Amarex N
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 10: Permissible flange loads
Nominal flange
diameter Forces [N] Moments [Nm]
F
y
F
z
F
x
∑
F M
y
M
z
M
x
∑
M
50-65 1350 1650 1500 2600 1000 1150 1400 2050
80 2050 2500 2250 3950 1150 1300 1600 2350
100 2700 3350 3000 5250 1250 1450 1750 2600
5.3.1.3 Fitting the guide wire arrangement
The pump set is guided into the sump or tank along two parallel, tightly stretched
guide wires made of stainless steel. It attaches itself automatically to the duckfoot
bend which has been fitted to the floor.
NOTE
Should site conditions/piping layout, etc. require the wire to run off the vertical, do
not exceed a maximum angle of 5° to ensure reliable fitting and guiding of the
pump set.
Fitting the mounting bracket
Fig. 7:
Fitting the mounting
bracket
1.
Fasten mounting bracket 894 to the edge of the tank/sump opening with steel
anchor bolts 90-3.37 and tighten the anchor bolts to a tightening torque of
10 Nm.
2.
Feed clamping pieces 571 through the holes of suspension bracket 572 and
fasten with nuts 920.37.
3.
Fasten fully threaded stud 904 with the pre-assembled clamping arrangement to
the mounting bracket with nut 920.36.
Do not tighten nut 920.36 too much in order to allow sufficient play for
subsequently tensioning the guide wire.