Mechanical Installation; Foundation; Mounting The Product; Positioning Of Mixers And Flowmakers - Grundfos AMG Series Installation And Operating Instructions Manual

5. Mechanical installation

5.1 Foundation

Only lift the mixer or flowmaker using the lifting point.
See fig Mounting of the lifting wire on the motor
bracket.
Mounting of the lifting wire on the motor bracket
Do not use the lifting equipment supplied
with the unit nor the wire used for lifting
and lowering the mixer or flowmaker into
the tank as universal lifting equipment.
Never hang the mixer or flowmaker by the
power cable. Never let the mixer or flow-
maker run while hanging from the lifting
equipment.
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

All nuts and screws used for the installation must be
made of stainless steel.
Use grease (Alu-paste) with a spring washer or lock
nut; otherwise, use Loctite or a similar product for
lubrication and locking.
All stainless steel nuts and screws should be
tightened to the following torques.
5.2.1 Anchor bolts
Anchor bolts used for mounting components in
concrete must have the following pull-out strength.

5.3 Positioning of mixers and flowmakers

The correct positioning of mixers and flowmakers is
essential to ensure proper operation and long life.
Observe the guidelines in the following sections.
5.3.1 Mixers
Submerge the mixer as deeply as possible.See fig.
Positioning sketch for mixers for the references of
distance.
•
•
•
A.1. Dimensions
•
Screws F-class
70
[Nm]
M6 8.8
M8 21.4
M10 44
M12 74
M16 183
M20 370
Size Pull-out strength
M12
M16
Place the mixer,so that proper mixing of the liquid
in the entire tank is obtained. 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 ) should be half of the
MIN
propeller diameter.
The distance from the propeller tip to the liquid
surface (H ) should be at least equal to the
ABOVE
propeller diameter.
The distance between the propeller tip and the
wall behind the mixer (L
MIN
1.5 times the propeller diameter.
Screws F-class
80
[Nm]
11.8
28.7
58
100
245
494
6 kN
14 kN
) should be at least
11