Wilo Yonos MAXO Instrucciones De Instalación Y Funcionamiento página 52

en
• The permissible tightening torques listed in the table below must not be exceeded, even if screws of higher
strength (≥ 4.6) are used, since splintering may otherwise occur at the edges of the long holes. This may
cause the screws to lose their prestress and leakage can occur in the flange connection. Risk of scalding!
• Use screws of sufficient length. The screw thread must project by at least one pitch of screw thread from
the screw nut.
• Perform leakage test at maximum permissible operating pressure!
Screws and tightening torques
Flange-end pump PN 6
Screw diameter
Strength class
Tightening torque
Screw length
Screw diameter
Strength class
Tightening torque
Screw length
Flange-end pump PN 10
Screw diameter
Strength class
Tightening torque
Screw length
Screw diameter
Strength class
Tightening torque
Screw length
Installation steps
1. Close the shut-off valves in front of and behind the pump (Fig. III).
2. Insert the pump into the pipe together with two suitable flat gaskets in such a way that the flanges can
be screwed to the pump inlet and outlet (Fig. VI).
Observe direction of flow! The arrow-shaped flow indicator on the pump housing must point in the dir-
ection of flow.
52
DN 32
M 12
≥ 4.6
40 Nm
≥ 55 mm
DN 65
M 12
≥ 4.6
40 Nm
≥ 60 mm
DN 32
M 16
≥ 4.6
95 Nm
≥ 60 mm
DN 65
M 16
≥ 4.6
95 Nm
≥ 65 mm
Installation and operating instructions • Wilo-Yonos MAXO/-D/-Z • Ed.01/2022-08
DN 40 DN 50
M 12 M 12
≥ 4.6 ≥ 4.6
40 Nm 40 Nm
≥ 55 mm ≥ 60 mm
DN 80 DN 100
M16 M16
≥ 4.6 ≥ 4.6
95 Nm 95 Nm
≥ 70 mm ≥ 70 mm
DN 40 DN 50
M 16 M 16
≥ 4.6 ≥ 4.6
95 Nm 95 Nm
≥ 60 mm ≥ 65 mm
DN 80 DN 100
M 16 M 16
≥ 4.6 ≥ 4.6
95 Nm 95 Nm
≥ 70 mm ≥ 70 mm