English (GB)
17
9.1.2 Appendix with NPSH curves
10. Maintenance and inspection
Service documentation is available in Grundfos
Product Center (http://product-
selection.grundfos.com/).
If you have any questions, please contact the
nearest Grundfos company or service workshop.
10.1 Tightening torques
10.1.1 Coupling
Fig. 7
Coupling screws
10.2 Shaft seal
CR, CRI, CRN 1s, 1, 3, 5, 10, 15, 20, 95, 125, 155,
185, 215, 255
Fig. 8
Shaft seal and shaft seal set screws for
CR, CRI, CRN 1s, 1, 3, 5, 95, 125, 155,
185, 215, 255
CR, CRN 32, 45, 64, 90, 120, 150
Fig. 9
Shaft seal flange screws and shaft seal
set screws for CR, CRN 32, 45, 64, 90,
120, 150
Appendix:
The appendix referred to in section
is
found in the standard CR, CRI, CRN
installation and operating instructions:
http://net.grundfos.com/qr/i/96462123
DANGER
Explosion risk
Death or serious personal injury
- The coupling screws, shaft seal, shaft
seal flange screws and shaft seal set
screws must be tightened according to
the specified torque values.
TM
0
7
2
39
6 3
418
Pump size
Coupling screws (4 pcs)
Tightening torque
CR, CRI, CRN
1s, 1, 3
M6-13 Nm
M8-31 Nm
M10-61 Nm
CR, CRI, CRN
10, 15, 20
M6-13 Nm
M8-31 Nm
M10-62 Nm
CR, CRI, CRN
32, 45, 64, 90
M10-85 Nm
CR, CRI, CRN
120, 150
M10-85 Nm
M16-100 Nm
CR, CRN 95,
125, 155, 185,
215, 255
M10-85 Nm
M16-100 Nm
Coupling screw
(4 pcs)
TM
07
23
95
34
18
Pump size
Tightening torque
Shaft seal
Shaft seal set
screws (3 pcs)
CR, CRI, CRN
1s, 1, 3, 5
M28-35 Nm
M5 - 2.5 Nm
CR, CRI, CRN
10, 15, 20
M33-35 Nm
CR, CRN 95,
125, 155, 185,
215, 255
Hex 60-100 Nm
Hex 75-150 Nm
M6-6 Nm
TM
07
23
9
7
34
18
Pump size
Tightening torque
Shaft seal
flange screws
(4 pcs)
Shaft seal set
screws (3 pcs)
CR, CRI, CRN
32, 45, 64, 90
M10-62 Nm
M6-6 Nm
CR, CRI, CRN
120, 150
Shaft seal
Shaft seal set screw
(3 pcs)
Shaft seal set screw (3 pcs)
Shaft seal flange screw (4 pcs)
