Tightening Torques For Suction And Discharge Flanges - Grundfos SE1 50 Installation And Operating Instructions Manual

Proceed as follows:
1. Fit the base stand or brackets to the pump. See dimensional
sketches at the end of this booklet.
2. Mark and drill fixing holes in the concrete floor/foundation.
3. Fasten the pump with expansion bolts.
4. Check that the pump stands vertically/horizontally. Use a spirit
level
5. Connect the motor cable.
We recommend to fit an isolating valve on the
suction side of the pump and a non-return valve as
Note
well as an isolating valve on the discharge side.
6. Install the suction and discharge lines as well as the valves, if
any. Make sure that the pump is not stressed by the pipework.
Fig. 6 Vertical dry installation on base stand
Fig. 7 Horizontal dry installation with brackets
14
7.4 Tightening torques for suction and discharge
flanges
Grade 4.6 (5) galvanised steel screws and nuts
DN DC Screw
DN 65 145 4 x M16
DN 80 160 8 x M16
DN 100 180 8 x M16
DN 150 240 8 x M20
Grade A2.50 (AISI 304) steel screws and nuts
DN DC Screw
DN 65 145 4 x M16
DN 80 160 8 x M16
DN 100 180 8 x M16
DN 150 240 8 x M20
The gasket must be a full face, reinforced paper
Caution
gasket like Klingersil C4300. If softer gasket material
is used, torques must be reconsidered.
Specified tightening torques
rounded off by +/- 5
[Nm]
Well
Slightly oiled
lubricated
70 60
70 60
70 60
140 120
Specified tightening torques
rounded off by +/- 5
[Nm]
Well
Slightly oiled
lubricated
- 60
- 60
- 60
- 120