Flange Forces And Torques - Grundfos CR Serie Instrucciones De Instalación Y Funcionamiento

®
Sylomer plate
Fig. 8 Pump on Sylomer
3.1.5 Outdoor installation
When the pump is installed outdoors, we recommend
that you provide the motor with a rain cover. We also
recommend that you open one of the drain holes in
the motor flange.
3.1.6 Tightening torques
WARNING
Flange gasket blowout
Death or serious personal injury
- Tighten flange bolts according to the
torque values stated in the installation
and operating instructions.
The table shows the recommended torques for base
plate anchor bolts and flange bolts.
The bolt quality must be minimum class 8.8.
CR,
Base
CRI,
[Nm] Bolt
CRN
size
1s-5 40 M10
10-20 50 M12
M16
32-150 70 M20
M24
8
®
plate
Flange bolts [Nm]
DIN, JIS,
Oval
ANSI
- 50-60
60 60-70
100 70-80
150 -
200 -

3.1.7 Flange forces and torques

If not all loads reach the maximum permissible value
stated in the tables below, one of these values may
exceed the normal limit. Contact Grundfos for further
information.
Fig. 9 Flange forces and torques
Y-direction: Inlet or outlet
Z-direction: Direction of chamber stack
X-direction: 90 ° from inlet or outlet
The following tables represent the values that apply
according to the material quality.