Wilo -Atmos BST Instrucciones De Instalación Y Funcionamiento página 44

en
Fig. 2: Example of a foundation screwed con-
nection
7.4.3 Permissible forces and torques on
the pump flanges
44
CAUTION
A faulty foundation or incorrect installation of the unit!
A faulty foundation or incorrect installation of the unit on the foundation
can lead to defects of the pump.
These defects are not covered by the warranty.
• Allow the concrete foundation to harden before installing the pump
unit. The surface must be flat and even.
• Never set up the pump unit on unfortified surfaces or surfaces that
cannot bear loads.
The baseplate must be mounted on a firm base. The foundation must be made of high-
quality concrete of sufficient thickness.
The baseplate must not be warped or pulled down on the surface of the foundation. It must
be supported so that the original alignment remains unchanged.
To anchor the baseplate sufficiently, the dimensions of the fastening screws are selected/
recommended in accordance with holes drilled in the baseplate:
Drilled hole in the base-
plate
∅ [mm]
12
15
18.5
• Align the complete unit with the help of a spirit level when installing it on the foundation.
• Always fit a damper (B) between damping foundation (D) and pedestal (F) on left and right
in the immediate vicinity of the fixation material (e.g. stone bolts (A)) between the base-
plate (E) and damping foundation (D).
• Tighten fixing material evenly and securely.
• To further reduce vibration. after fixing. the base can be grouted with mortar which is as
vibration-free as possible via opening as far as the upper edge. Hollow spaces are to be
avoided here.
DN Forces F [N]
F F
X Y
Discharge and suction flange
32 367.5 315.0
40 385.0 350.0
50 525.0 472.5
65 647.5 595.0
80 787.5 717.5
100 1050.0 945.0
Table 5: Permissible forces and torques on pump flanges
If not all working loads reach the maximum permitted values, one of these loads may exceed
the normal limit value. Provided that the following additional conditions are fulfilled:
• All force and torque components are limited to 1.4 times the maximum permitted value.
• The forces and torques acting on each flange meet the requirements of the compensation
equation.
Installation and operating instructions • Wilo-Atmos BST • Ed.01/2023-07
Thread Screw length
[mm]
M10 120
M12 160
M16 200
Torques M [Nm]
F Σ Forces F M
Z X
297.5 367.5 385.0
437.5 437.5 455.0
577.5 577.5 490.0
735.0 735.0 525.0
875.0 875.0 560.0
1172.5 1172.5 595.0
Thread length
[mm]
36
40
50
M M Σ Torques M
Y Z
262.5 297.5 385.0
315.0 367.5 455.0
350.0 402.5 490.0
385.0 420.0 525.0
402.5 455.0 560.0
437.5 507.5 595.0