ARI Armaturen CHECKO-D PN40 EN - Manual (Page 9)

Rev. 0040106000 1613 Page 2-9
Operating and installation instructions
CHECKO
®
-V PN6-160 / CHECKO
®
-D PN40
7.0 Care and maintenance
Maintanance and maintenance-intervals have to be defined by the operator according to
the requirements.
CHECKO
®
-V:
- Before reassembling the unit, remember that the bearing surface must be cleaned and a
new gasket (pos. 7) must be inserted.
- Set the cover in place.
- Tighten the hexagon nuts (hexagon screws for valves of cast iron) evenly crosswise.
- Tightening torque‘s for hexagon nuts / screws:
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.
ATTENTION !
- See point 10.0 and 11.0 before dismantling the valve.
PN DN
hexagon nuts /
hexagon screws
Torque
(Nm)
6 - 40 15- 32 M 10 15-30
40- 65 M 12 35-50
80-100 M 16 75-100
125-150 M 16 80-120
200 M 20 150-200
250-400 M 24 340-410
500 M 27 340-410
63 - 160 10 - 25 M 16 50
±2
32 - 50 M 20 150
±3
-
ATTENTION !
It is essential that the safety regulations are observed when identifying faults.