3 tightening torques, 1 tightening torques for hexagon nuts, 2 tightening torques for seat rings – ARI Armaturen STEVI 423 DN300 EN User Manual
Page 10: 0 troubleshooting, Refer to point 7.3.1), Torques refer to item 7.3.2.), Refer to item 7.3.1.)
Page 10
Rev. 0040318001 0410
Operating and installation instructions
3-way control valves - STEVI
®
423 (DN300)
7.3 Tightening torques
7.3.1 Tightening torques for hexagon nuts
7.3.2 Tightening torques for seat rings
Refer to operating and installation instructions for actuator
concerned for installing actuators!
8.0 Troubleshooting
In the event of malfunction or faulty operating performance check that the installation and
adjustment work has been carried out and completed in accordance with these Operating
Instructions.
If malfunctions cannot be eliminate with the help of the following table
“9.0 Troubleshooting table”, the supplier or manufacturer should be consulted.
M 20
=
150 - 200 Nm
M 24
=
340 - 410 Nm
DN 300
=
3850 Nm
-
ATTENTION !
- It is essential that the safety regulations are observed when identifying faults.