Dutypoint VT Booster Set, O & M Manual

Page: 37 / 123

English (GB)
G
8
6.3 Outdoor installation
When installed outdoors, it is recommended to provide the motor
with a rain cover. We also recommend to open one of the drain
holes in the motor flange.
6.4 Hot surfaces
Figure 12 shows which pump parts get as hot as the pumped
liquid.
Fig. 12
Hot surfaces on a CR, CRI, CRN pump
6.5 Torques
The table shows the recommended torques for bolts in base and
flanges.
6.6 Flange forces and torques
If not all loads reach the maximum permissible value stated in the
tables below, one of these value may exceed the normal limit.
Contact Grundfos for further information.
Fig. 13
Flange forces and torques
Forces
Torques
Warning
When pumping hot liquids, care should be taken
to ensure that persons cannot accidentally come
into contact with hot surfaces.
TM
04
03
61
06
08
CR, CRI, CRN
Base
[Nm]
Flange
[Nm]
1s to 5 40 50-60
10 to 20 50 60-70
32 to 150 70 70-80
Pump head
Pump sleeve
Base
TM
04 03
46 060
8
Y-direction: Direction of chamber stack
Z-direction: 90 ° from inlet/outlet
X-direction: Inlet/outlet
Flange, DN [mm
]
CR, CRI, CRN Force
,
Y-dir
ecti
o
n
[N] Force
,
Z-d
ire
ction
[N] Force
,
X-dir
ecti
o
n
[N]
25/32 1s to 5 760 1170 780
40 10 1000 1250 1100
50 15 and 20 1350 1650 1500
65 32 1700 2075 1875
80 45 2050 2500 2250
100 64 and 90 2700 3350 3000
125/150 120 and 150 2700 3350 3000
Fl
ange, DN
[mm] C
R
, CR
I, C
R
N
Torque, Y
-dir
ection
[N
m
]
Torque, Z-di
rec
ti
o
n
[N
m
]
Torque, X
-dir
ection
[N
m
]
25/32 1s to 5 820 970 1220
40 10 900 1050 1300
50 15 and 20 1000 1150 1400
65 32 1075 1225 1500
80 45 1150 1300 1600
100 64 and 90 1250 1450 1750
125/150 120 and 150 1250 1450 1750