ARI Armaturen Strainer PN6-160 - Manual (Page 8)

Page 2-8 Rev. 0040101000 1613
Operating and installation instructions
Strainer PN6-160
7.0 Care and maintenance
The strainer screens must be cleaned regularly. Maintenance and maintenance-intervals
have to be defined by the operator and depends on the degree of dirt accumulation in the
system.
- If necessary, the strainer can be fitted with an additional start-up filter (e.g. filter with
supporting basket) to start up the system.
- Flush the plant thoroughly before starting it.
- The strainer requires little maintenance.
- Before reassembling the unit, remember that the bearing surface must be cleaned and a
new gasket (pos. 6) must be inserted.
- Set the strainer cover (pos. 2) in place.
- Tighten the hexagon nuts (pos. 4) evenly crosswise.
- Tightening torque‘s for hexagon nuts / bolts:
ATTENTION !
Refer to point 10.0 before opening the strainer.
- Contaminated strainers in suction-lines will result cavitation and damage the
pumps.
PN DN
hexagon nuts /
bolts
Torque
(Nm)
6 - 40 15 - 32 M 10 20-35
40 M 12 20-35
50 - 65 M 12 60-80
80 - 150 M 16 100-125
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