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
Pull the expeller (235.21) off the shaft by levering against the stuffing box housing. The rotating parts of the
mechanical seal (433.21) follow with the expeller.
5
Special care should be taken not to damage the sliding surfaces of the mechanical seal. The mechanical
seal can be removed from the expeller by detaching the locking screws of the seal.
6
Unscrew the nuts (920.22) of the stuffing box housing (451.21) and lever the stuffing box housing out of the
bearing housing (330.31) guide using the two slots at the interface of the bearing housing.
7
The stationary seat of the mechanical seal (433.21) can be removed from the stuffing box housing. Special
care should be taken not to damage the sliding surfaces of the seal.
Gas separator, standard integrated single (types GM11 and GM12)
1
Unscrew the hexagon head screws (901.21).
2
Detach the case cover (161.21) by levering from the slot between the casing 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. Detach
the gasket (400.22) or o-ring (412.23).
3
Remove the expeller (604.21) from the shaft.
4
By using the hexagonal 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 push all
components off the shaft.
5
Unscrew the hexagon head screw (901.22) of the stuffing box housing (451.21). Remove the seal ring
(411.21).
6
The static parts of the mechanical seal (433.21) can now be removed from the case cover (161.21).
7
Unscrew the hexagon head screws (901.33) of the adapter and draw the adapter out by using the same
screws as extractors.
Gas separator, standard integrated double (types GM21 and GM22)
1
Unscrew the hexagon head screws (901.21).
2
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. Detach
the gasket (400.22) or o-ring (412.23).
3
Remove the expeller (604.21) from the shaft.
4
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 push all
components off the shaft.
5
Unscrew the hexagon head screw (901.22) of the stuffing box housing (451.21). Remove the seal ring
(411.21).
6
The static parts of the mechanical seal (433.21) can now be removed from the stuffing box housing (451.21).
7
Remove the rotating part on the atmospheric side of the mechanical seal (433.21) from the shaft by opening
the hexagonal retainer screws.
8
Unscrew the hexagon head screws (901.33) of the adapter and draw the adapter out by using the same
screws as extractors.
Gas separator, static seal (types GS11 and GS12)
1
Loosen the hexagon head screws (901.21) and remove the guards (683.21 and 683.22).
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). In
heavier case covers, there is a threaded hole (size M8) for lifting the cover by using an eye screw. Detach
the gasket (400.22) or o-ring (412.23).