Grundfos NB Serie Instrucciones De Instalación Y Funcionamiento página 17

5. Press down the threaded pipe to ensure that
the shaft is in bottom position.
7. Apply Loctite 243 to the threads of the set
screws. Tighten the set screws to the correct
torque. See below.
M5: 6 ± 2 Nm
M6: 8 ± 2 Nm
M8: 15 ± 3 Nm
6. Remove the threaded pipe.
8. Fit the coupling guard. Tighten the screws to
the correct torque. See below.
M5 x 10 mm: 6 ± 2 Nm
17