Wilo Yonos GIGA2.0-I Installation And Operating Instructions Manual page 131

6.5.1 Permissible forces and torques on
the pump flanges
Fig. 14: Load case 16A, EN ISO 5199, Ap-
pendix B
Installation and operating instructions Wilo-Yonos GIGA2.0-I/-D
Installation
NOTICE
Avoid flow cavitation!
• A settling section must be provided upstream and downstream of the pump in
the form of a straight pipe. The length of the settling section must be at least
5 times the nominal diameter of the pump flange.
ƒ
The pipes and pump must be free of mechanical stress when installed.
ƒ
The pipes must be fixed in such a way that the pump does not have to support the
weight of the pipes.
ƒ
Clean and flush the unit before connecting the pipes.
ƒ
The direction of flow must correspond with the direction arrow on the pump
flange.
ƒ
The air vent valve at the lantern (Fig. I, Item 28) must always be pointing upwards if
the motor shaft is horizontal (Fig. 9, Item 1). If the motor shaft is vertical, any ori-
entation is permitted. See also "Permissible installation positions" section.
ƒ
Leakages on the clamping ring screw connection (Fig. I, Item 5/9) can be caused by
transportation (e.g. setting behaviour) and handling of the pump (turning the drive,
attaching insulation). Further turning the clamping ring screw connection by a
1/4 turn resolves the leakage.
Fig. 13: Further turning the clamping ring screw connection by a 1/4 turn
Pump suspended in pipe, case 16A (Fig. 14)
DN Forces F [N]
F F F
X Y Z
Pressure and suction flange
32 450 525 425
40 550 625 500
50 750 825 675
65 925 1050 850
80 1125 1250 1025
100 1500 1675 1350
125 1775 1975 1600
Values in acc. with ISO/DIN 5199 – class II (2002) – Appendix B
Table 7: Permissible forces and torques on pump flanges in vertical pipe
Torques M [Nm]
Σ Forces F M M
X Y
825 550 375
975 650 450
1300 700 500
1650 750 550
1975 800 575
2625 875 625
3100 1050 750
en
M Σ Torques M
Z
425 800
525 950
575 1025
600 1100
650 1175
725 1300
950 1525
131