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
Gland packing
(type PG11)
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) of the case cover (161.21).
3
By using the said screws as extractors, draw the case cover (161.21) out of the adapter (344.31). In heavier
case covers, there is a threaded hole (size M8) for lifting the cover by using an eye screw. All parts
belonging to the gland packing, except the shaft wearing sleeve (524.21), will stay in the casing cover.
4
Unscrew the nuts (920.21) and remove the two-piece stuffing box gland (452.21). The neck bush (456.21),
gland packing (461.21) and lantern ring (458.21) can now be drawn out of the casing cover.
5
Remove the shaft wearing sleeve (524.21) from the shaft with an extractor.
6
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, standard integrated single (type LM11)
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. Notice the compressor rings (487.21) between the
suction impeller and mechanical seal (433.21).
6
Remove the o-rings (412.21 and 412.22).
7
Remove the rotating part on the product side of the mechanical seal from the shaft.
8
Pull the case (100.21) out of the guideway in the adapter (344.31) with the help of hexagon head screws
(901.21).The static parts of the mechanical seal (433.21) will follow.
9
Unscrew the hexagon head screw (901.22) of the case (100.21). Remove the seal ring (411.21).
10 The mechanical seal can now be removed from the case (100.21) and dismantled according to the seal
manufacturer's instructions.
11 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, standard integrated double (type LM21)
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.
6
Remove the o-rings (412.21 and 412.22).
7
Remove the rotating part on the product side of the mechanical seal from the shaft.
8
Pull the case (100.21) out of the guideway in the adapter (344.31) with the help of hexagon head screws
(901.21). The static parts of the mechanical seal (433.21) will follow.
9
Unscrew the hexagon head screw (901.22) of the case (100.21). Remove the seal ring (411.21).
10 The mechanical seal can now be removed from the case (100.21) and dismantled according to the seal
manufacturer's instructions.