Grundfos CR 95 Installation And Operating Instructions Manual page 10

3.1.4 Vibration dampening
Elimination of noise and vibrations is best achieved
by means of a concrete foundation, vibration
dampers and expansion joints.
If you use vibration dampers, install them under the
foundation. For pumps with motor size below or
equal to 30 kW, you can use vibration dampers as
shown in fig. 21.
For pumps with motor size equal to 37 kW or above,
®
you can use a Sylomer
Vibration dampers
Fig. 21 Pump on vibration dampers
®
Sylomer plate
Fig. 22 Pump on Sylomer
10
plate as shown in fig. 22.
Expansion joints
Expansion joints
®
plate
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
specified torque values.
WARNING
Falling objects
Death or serious personal injury
- Tighten the base plate anchor bolts
according to the specified torque
values.
The tables show the recommended torques for base
plate anchor bolts and flange bolts.
The bolt quality must be minimum class 5.8 except
for CR, CRN 95 with optional small base plate which
must be minimum class 8.8.
Base plate anchor bolts
CR, CRN
Bolt size
95 with
optional M12
small base (∅14 free hole)
plate
M16
95
(∅18 free hole)
M20
125-155
(∅22 free hole)
M24
185-255
(∅26 free hole)
(DIN/EN, JIS, ANSI)
CR, CRN
Bolt size
M16
95
M20
M20
125-155
M24
M20
185-255 M24
M27
Torque [Nm]
65
100
190
130
Flange bolts
Torque [Nm]
30
90
90
230
90
230
300