SPP id: Version 14 > / 140901 / Replaces 140530 / en /
N32198
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Series
2.15
INSTRUCTIONS
September 2014
Page
ISO
G
COPYRIGHT © SULZER PUMPS FINLAND OY
ORIGINAL INSTRUCTION
USER'S MANUAL – AHLSTAR
Corrective maintenance
4
Remove the expeller (604.21) from the shaft.
5
By using the hexagon head screws (901.21) as extractors, pull the stuffing box housing (451.21) out of the
guideway in the adapter. The stuffing box housing (451.21) with its incorporated parts will also come out.
6
Remove the shaft wearing sleeve (524.21) from the shaft.
7
Unscrew the nuts (920.21) and detach the thrust ring (475.21) from the stuffing box housing (451.21).
Detach the o-ring (412.24) from the thrust ring.
8
Remove the static seal (435.21) and o-rings (412.25) from the shaft wearing sleeve (524.21).
9
Unscrew the hexagon head screws (901.33) of the adapter and draw the adapter out by using the same
screws as extractors.
Dynamic seal, plate type (types DS13 and DS14)
1
Loosen the hexagon head screws (901.21) and remove the guards (683.21 and 683.22).
2
Uncrew the hexagon head screws (901.21).
3
Detach the case cover (161.21) by levering from the slot between the case cover and adapter (344.31). In
heavier case covers, there is a threaded hole (size M8) for lifting the cover by using an eye screw.
4
Detach the expeller (604.21) from the shaft.
5
By using the hexagon head screws (901.21) as extractors, draw the stuffing box housing (451.21) out of the
guiding in the adapter.
6
The cover plate for seal (471.21) and the static seal (435.21) can be detached by unscrewing the nuts
(920.21).
7
Unscrew the grub screws (904.21) and detach the thrust ring (475.21) from the shaft.
8
Unscrew the hexagonal screws (901.33) of the adapter and draw the adapter out by using the same screws
as extractors.
Mechanical seal, standard integrated single (types MS11 and MS12)
1
Loosen the hexagon head screws (901.21) and remove the guards (683.21 and 683.22).
2
Uncrew the hexagon head screws (901.21).
3
By using the said screws as extractors, draw the case cover (161.21) out of the adapter (344.31). In heavier
casing covers, there is a threaded hole (size M8) for lifting the cover by using an eye screw. The
components of the mechanical seal (433.21) come off the shaft.
4
Unscrew the hexagon head screws (901.22) of the case cover (161.21) and remove the seal ring (411.21).
5
The mechanical seal can now be removed from the case cover (161.21) and dismantled according to the
seal manufacturer's instructions.
6
Unscrew the hexagon head screws (901.33) of the adapter and draw the adapter out by using the same
screws as extractors.
Mechanical seal, standard integrated double (type MS21, pump types A, APP, NPP and WPP)
1
Loosen the hexagon head screws (901.21) and remove the guards (683.21 and 683.22).
2
Uncrew the hexagon head screws (901.21).
3
By using the said screws as extractors, draw the case cover (161.21) out of the adapter (344.31). In heavier
casing covers, there is a threaded hole (size M8) for lifting the cover by using an eye screw. The
components of the mechanical seal (433.21) come off the shaft.
4
Unscrew the hexagon head screws (901.22) of the case cover (161.21) and remove the seal ring (411.21).
5
The mechanical seal can now be removed from the case cover (161.21) and dismantled according to the
seal manufacturer's instructions.