KSB CTN - Page 54

7 Servicing/Maintenance
54 of 76
CTN / CTN-H
Table26: Gland packing chamber
Sizes No. of rings Gland packing
chamber
without shaft
protecting sleeve
Packing cross-
section
Gland packing
chamber
with shaft protecting
sleeve
Packing cross-
section
Ø d
i
Ø d
a
l Ø d
i
Ø d
a
l
25 / 40 / 50 4 packing rings and
1 lantern ring
or
6 packing rings
35 51 53 8 x 8 45 65 64 10 x 10
80 / 100 45 65 64 10 x 10 55 75 64 10 x 10
125 / 150 55 75 64 10 x 10 70 95 79 12.5 x 12.5
200 / 250 70 95 79 12.5 x 12´.5 80 105 79 12.5 x 12.5
7.5.5.2.1 Barrier fluid for gland packing
The gland packing seals against splashes and vapours.
Gland packings with self-lubricating properties are used. This means no extra barrier
fluid or grease is required.
If necessary, clean fluid handled or a fluid compatible with the fluid handled can be
used. If no barrier fluid is available, grease can be used in combination with a Conrad
lubricator.
1
2
3
4
Fig.9: Conrad lubricator
1 Counternut 2 Upper section
3 Plunger 4 Lower section (grease cup)
ü The notes and steps stated in (ðSection7.5.1,Page48) bis
(ðSection7.5.4,Page51) have been observed/carried out.
ü The lubricator has been cleaned and checked.
ü The grease container and threads are clean.
1. Screw lower section (4) into the connection for sealing grease.
Fill grease cup (4) to the brim with grease.
2. Remove plunger (3) from the upper section.
Apply a layer of grease to the inner lining of the upper section.
3. Tighten the bottom screw.
4. Insert plunger (3).
The bottom screw must face outwards.
5. Turn the upper section (2) four turns into the lower section (4).
6. Tighten counter nut (1) on the edge of the lower section.