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
11 Remove the rotating part on the atmospheric side of the mechanical seal (433.21) from the shaft by opening
the hexagonal retainer screws.
12 Unscrew the hexagon head screws (901.33) of the adapter and draw the adapter out by using the same
screws as extractors.
Liquid ring pump, element single (type SM11)
1
Detach the pipe (700.23) with the peripheral equipment from the case (100.21) if a vacuum relief valve
(695.21) is included in the delivery.
2
Unscrew the hexagon head screws (901.21).
3
Remove the case cover (161.21) by levering from the slot between the case cover and adapter (344.31).
4
Remove the o-ring (412.23) from the case (100.21).
5
Remove the suction impeller (231.21) from the shaft. Pull the shaft wearing sleeve (524.21) from the shaft.
The rotating part of the mechanical seal (433.21) will come off, too, and the static part will remain in the
cover plate for seal. Notice the compressor rings (487.21) between the suction impeller and shaft wearing
sleeve.
6
Pull the case (100.21) out of the guideway in the adapter with the help of hexagon head screws (901.21).
Detach the cover plate for seal (471.21) by unscrewing the socket head capscrews (914.21).
7
The rotating part of the mechanical seal can now be removed from the shaft wearing sleeve and the static
part from the cover plate for seal. Make sure not to damage the sliding surfaces.
8
Unscrew the hexagon head screws (901.33) of the adapter and draw the adapter out by using the same
screws as extractors.
Liquid ring pump, ready-fitted double (type SM21)
1
Detach the pipe (700.23) with the peripheral equipment from the case (100.21) if a vacuum relief valve
(695.21) is included in the delivery.
2
Unscrew 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).
4
Remove the o-ring (412.23) from the case (100.21).
5
Remove the suction impeller (231.21) from the shaft. The rotating part on the product side of the mechanical
seal (433.21) will come off, too, and the static part will remain in the case. Notice the compressor rings
(487.21) between the suction impeller and mechanical seal.
6
Pull the case (100.21) out of the guideway in the adapter (344.31) with the help of hexagon head screws
(901.21).
7
The static part of the mechanical seal is detached from the case (100.21) by unscrewing the socket head
capscrews (914.21).
8
The rotating part on the atmospheric side of the mechanical seal can be removed from the shaft by opening
the hexagonal retainer screws.
9
Unscrew the hexagon head screws (901.33) of the adapter and draw the adapter out by using the same
screws as extractors.
Air separating pump, element single (type RM11)
1
Open the two hexagon head screws (901.21) of the case cover (161.21).
2
By using the above mentioned screws as extractors, push the case cover (161.21) and cover (160.21) out of
the stuffing box housing (451.21).The gasket (400.23) may be replaced if needed.
3
The case cover and cover may be detached from each other, so that the condition of the o-ring (412.23) and
the gasket (400.23) may be checked and replaced if needed.