53
Pure graphite packings see supplementary operating instructions. Always use pre-com-
pressed packing rings.
The notes and steps stated in ( Section 7.5.1 Page 50) to ( Section 7.5.2 Page 50) have
been observed/carried out.
The bearing assembly as well as the individual parts are kept in a clean and level assembly
area.
All disassembled parts have been cleaned and checked for wear.
Any damaged or worn parts have been replaced by original spare parts.
The sealing surfaces have been cleaned.
1. Clamp casing cover 161 into a vice.
2. Push in neck bush 456.
3. Insert the first packing ring, ensuring that its cut edge is in horizontal position.
4. Hold the packing ring in place and slide shaft protecting sleeve 524 (chamfered side first)
into the stuffing box packing chamber from the pump end.
5. Slightly expand the inside diameter of the packing ring by moving shaft protecting sleeve
524 back and forth. Then pull out the shaft protecting sleeve. Insert lantern ring 458, if any.
Insert each subsequent packing ring separately with its joint offset by approx. 90° in reltion
to the previous one. Repeat the expansion procedure When the last packing ring has been
inserted, shaft protecting sleeve 524 remains in the packing chamber.
6. Insert stuffing box ring 454 with the drilled hole down.
7. Fit stuffing box gland 452 and lightly fasten it by hand with the two hexagon nuts 920.02;
support discs 550.
8. Fit guard 680.
9. Install complete discharge cover 161 with shaft protecting sleeve 524 in the pump; take
care not to damage joint ring 411.
7.5.4 Fitting the Impeller
The notes and steps stated in ( Section 7.5.1 Page 50) to ( Section 7.5.3 Page 51) have
been observed/carried out.
The assembled bearing/mechanical seal as well as the individual parts are kept in a clean
and level assembly area.
All dismantled components have been cleaned and checked for wear.
Any damaged or worn parts have been replaced by original spare parts.
The sealing surfaces have been cleaned.
Impeller bore, shaft and keyways are clean and free from burrs.
1. Insert keys 940.01 into the shaft keyway.
2. Insert joint ring 411.
3. Coat the impeller with a suitable lubricant.
4. Slip impeller 230 onto shaft 210.
5. Insert joint ring 411.
Table 25: Stuffing box packing chamber
Bearing
bracket
Stuffing box packing chamber
Packing cross-
section
Packing rings
Ø d
1
Ø d
a
l
UP02
35
51
53
8 x 8
4 rings and
1 lantern ring
OR
6 rings
UP03
45
65
64
10 x 10
UP04
55
75
64
10 x 10
UP05
70
95
79
12.5 x 12.5
UP06
80
105
79
12.5 x 12.5
P08s
100
132
102
16 x 16
7 Servicing/Maintenance
