salmson NOLH Installation Et Mise En Service page 50

9. 3. 1. 1 DISMANTLING B RA CKETS SIZES 25,35 A ND 45
1. Mark the position of the parts in relation to each other with a
color pen or a scribing point.
2. Remove the hexagonal screws 90.10.
3. Withdraw the back pull out unit from the volute casing 10.20.
4. Remove flat gasket 40.00.
5. Remove screws 90.13 and remove protective screen.
6. Loosen impeller nut 92.20.
7. Remove impeller 23.00 and key 94.01.
Design with stuffing box
1. Remove the screws 91.40 and remove the casing cover 16.10.
2. Remove nuts 92.01 and stud bolts 90.21.
3. Loosen screws 90.23 and remove stuffing box 45.10 and gland
45.20 with the pressure ring 45.70.
4. Tear out packing rings 46.10 and remove lantern ring 45.80.
5. Slide out shaft sleeve 52.40.
Repacking:
When repacking, the worn packing rings and the lantern ring should
be removed carefully from the shaft seal chamber. The shaft and
shaft sleeve must not be damaged. Otherwise a perfect sealing
cannot be guaranteed anymore and the shaft sleeve should be
replaced. If the pump is installed, cut packing rings diagonally, bend
them in a spiral shape, position them on the pump shaft and bend
them carefully into a ring form. Push the packing rings and the
lantern ring using the gland into the shaft sealing chamber. The cut
joints should be staggered by 180°. Tighten the gland adjusting nuts
steadily until resistance is felt when rotating the pump shaft by
hand. Remove the gland again and fasten the nuts slightly. If the
pump is dismantled, it is useful to push the packing rings in the
delivered condition, that means closed over the shaft sleeve.
All manuals and user guides at all-guides.com
17
Design with mechanical seal :
1. Slide out the spacer ring 50.40.
2. Remove the rotating part of the mechanical seal 43.30.
3. Remove the screws 91.40 and remove the casing cover 16.10.
Design with quench :
Remove cover 16.50, O‐ring 41.23 and lip seal 42.11.
Design with external heating
Remove cover 16.50, O‐rings 41.22 and 41.23.
4. Push out the static part of the mechanical seal 43.30 and pin
56.10 if necessary.
ENGLISH