APV W+ Bedienungsanleitung Seite 30

381434 ISS S 01.98
Fitting
Positioning the water supply
connections
10
5 Maintenance
11. Check the stator ring (pos 11) and rotor ring (pos 10) for signs of
wear too. The wearing surfaces must be completely free of
scratches/cracks. If not, the rotor ring and stator ring must both be
replaced.
11a. In the case of water-flushed shaft seals, check the back seal rings
(pos 15,16) for wear too, and replace if necessary.
12. Fit new O-rings on the stator ring and rotor ring.
NB! Remember to moisten these with water.
13. Fit the rotor ring(pos 10) on the impeller without using tools.
NB! The "notch" in the rotor ring must be fixed so that it fits the
carrier pin (pos 8) in the impeller.
13a. Where there are water-flushed/aseptic seals, you should also fit a
rotor ring (pos 15) (with O-ring pos 18) on the shaft - again
without using tools.
14. Fit the stator ring (pos 11) on the back plate without using tools.
NB! The "notches" in the stator ring must be fixed so that they fit
the carrier in the back plate. Check that the stator ring is posi-
tioned so that it slides back and forward easily in the back plate.
14a. Where there are water-flushed/aseptic seals, remove the "Drain
pipe" (pos 19) from the stator rings for both the front and back
seal before fitting them in the seal cover (pos 20) and back
plate (pos 7) respectively.
15. After fitting, clean the wearing surfaces.
15a. For liquid-flushed/aseptic seals, install the rear flange (Pos. 7).
16. Fit the impeller (pos 4). Remember to use the proper tension:
M10: 45 Nm
M14: 70 Nm
M20: 200 Nm
17. Press the pump body (pos 1) in over the O-ring (pos 3) and fasten
with the clamp ring (pos 2).
(33 lbf ft)
(52 lbf ft)
(148 lbf ft)