English (GB)
8
3.1.4 Permanent, vertical or horizontal, dry
installation in a pump room
Pumps in dry installation are installed permanently in
a pump room.
The pump motor is enclosed and watertight and will
not be damaged if the installation site is flooded with
water.
Proceed as follows:
1. Mark and drill mounting holes in the concrete
floor or concrete foundation.
2. Fit the bracket or base stand to the pump.
3. Fasten the pump with expansion bolts.
4. Check that the pump is vertical or horizontal.
5. Fit the inlet and outlet pipes and isolating valves,
if used, and ensure that the pump is not stressed
by the pipes.
6. Adjust the length of the power cable by coiling it
up on a relief fitting to ensure that the cable is not
damaged during operation. Fasten the relief
fitting to a suitable hook. Make sure that the
cables are not sharply bent or pinched.
7. Connect the power cable and the control cable, if
any.
Pull-out strength for anchor bolts
Recommendation for pump foundations
Note: This applies for pumps above 15 kW.
All rotating equipment generates vibrations when an
impeller or rotor is turning at high speeds. Proper
installation and anchorage of the pumps and
installation accessories is critical to limit vibrations
and achieve reliable installation. To ensure
acceptable vibration levels, all parts of the system
must be sufficiently stiff and firmly anchored to
minimize vibrations:
• The foundation and concrete must be of
adequate strength to support the weight of the
pump including accessories, the weight of the
liquid passing through the pump, and the forces
generated by the pump.
• The mass of the concrete foundation must be a
minimum of three to five times the mass of the
supported equipment and must have sufficient
rigidity to withstand the axial, transverse, and
torsional loadings generated by these machines.
• The foundation must be 15 cm wider than the
base plate for pumps up to 350 kW and 25 cm
wider for larger pumps.
• The concrete used in the foundation must have a
minimum tensile strength of 250 N/cm2.
• Epoxy grout must always be used to mate the
pump base plate to the foundation.
Fig. 7 Eccentric reducer in horizontal
installation
In order to facilitate service on the pump,
we recommend that you use isolating
valves on either side of the pump.
Installation
types D and H Bolts
Pull-out strength for
a single bolt
[kN]
-- 5.0
The pull-out strengths stated are without
safety factor. The required safety factor
may depend on the materials and method
used for anchoring.
We recommend that you use a reducer
between the inlet pipe and the pump in
horizontal installations. The reducer must
be of the eccentric type and must be
installed so that the straight edge is
upwards. In this way, the accumulation of
air in the inlet pipe is avoided and the risk
of disturbance of operation is eliminated.
See fig. 7.
TM05 2540 0212
Reducer of the eccentric type
≥0.2 m
