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Installation and maintenance instructions Wilo-Horizontal pumps
NP
G
4.2
Foundation
The base plate should be mounted onto a firm
foundation, either an appropriate thickness of
quality concrete or sturdy steel framework. It
should NOT be distorted or pulled down onto the
surface of the foundation, but should be suppor-
ted to maintain the original alignment.
Anchor bolts must be in accordance with the foot
bolt holes. Use anchor bolts of accepted standards
and sufficient to ensure seave fitting in the foun-
dation.
Provide sufficient space in the foundation to
accommodate the anchor bolts. If necessary, pro-
vide concrete risers.
Usually the pump and its drive are mounted on a
common base plate.
4.2.1 Setting the base plate for anchoring
• Clean the foundation surface thoroughly.
• Put shims on the foundation surface (approx 20-
25 mm thick), one on each side of the bolt hole (as
an alternative, leveling screws can be used). .
• Lay the base plate and level in both directions with
extra shims. The base plate should be level to
within 0.5 mm per 1 m.
If anchor bolts have been pre-cast in the founda-
tion slightly tighten the anchor bolts. Otherwise
let them hang in the foundation holes.
4.3
Initial alignment
There are many methods of installing
pump units to their foundations. The
correct method depends on the size of
the pump unit, its location and noise vib-
ration limitations. Non-compliance with
the provision of correct foundation and
installation may lead to failure of the
pump and, as such, would be outside the
terms of the warranty.
Type of
base
Article
number
Length
mm
mm
Length
thread mm
4
740707
300
20
60
5
740708
6
740709
7
740710
300
24
100
8
740711
9
740712
10
4084125
CAUTION!
Before connecting the couplings verify
the motor rotation direction.
CAUTION!
