Mounting The Product; Positioning Of Mixers And Flowmakers - Grundfos SMD Installation And Operating Instructions Manual

Use the lifting equipment supplied with the
unit only for lifting the mixer or flowmaker.
For dimensions and weights, see
and weights.

5.2 Mounting the product

Make sure to use stainless steel nuts and bolts for
installation.
Use grease or alu-paste with a locking nut for
lubrication and locking or, alternatively, use Loctite or
a similar product.
Tighten all nuts and bolts to the following torques:
Bolts F-class 70
[Nm]
M6 8.8
M8 21.4
M10 44
M12 74
M16 183
M20 370
5.2.1 Anchor bolts
Anchor bolts used for mounting components in
concrete must have the following pull-out strength:
Size
M12
M16
14
A.1. Dimensions
Bolts F-class 80
[Nm]
11.8
28.7
58
100
245
494
Pull-out strength
[kN]
6
14

5.3 Positioning of mixers and flowmakers

Correct positioning of mixers and flowmakers is
essential to ensure proper operation and long life.
5.3.1 Mixers
Submerge the mixer as deeply as possible.
• If more mixers are installed in the same tank, the
mixers must not generate opposite flows.
• The distance between the propeller tip and the
bottom of the tank, H
MIN
for mixers, must be half of the propeller diameter.
• SMG: The distance from the propeller tip to the
liquid surface must be at least equal to the
propeller diameter. See H
sketch for mixers.
• SMD: The distance from the propeller tip to the
liquid surface must be at least 1.5 times the
propeller diameter. See H
sketch for mixers.
• The distance between the propeller tip and the
wall behind the mixer must be at least 1.5 times
the propeller diameter. See L
sketch for mixers
1
Positioning sketch for mixers
Pos. Description
L
1
MIN
H
2
ABOVE
H
3
MIN
in fig. Positioning sketch
in fig. Positioning
ABOVE
in fig. Positioning
ABOVE
in fig. Positioning
MIN