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
10 Install the rotating part of the mechanical seal (433.21) into place into the shaft wearing sleeve (524.21) and
push the shaft wearing sleeve onto the shaft.
11 Install the needed the compressor rings (487.21) onto the shaft.
12 Place the o-ring (412.21) into its groove and then push the suction impeller (231.21) onto the shaft.
13 Install the o-ring (412.23) into its groove in the case (100.21).
14 Install the case cover (161.21) into its guideway into the adapter (344.31). Make sure that the cylinder pin
(562.21) goes into its hole in the case cover. Fix the screws (901.21). Continue the assembly according to
the following section ”Installation of impeller”.
Liquid ring pump, ready-fitted double (type SM21)
1
Fix the adapter (344.31) into the bearing housing (330.31) with hexagonal screws (901.33).
2
Push the case (100.21) into its guideway into the adapter (344.31).
3
Push the inner rotating part of the mechanical seal (433.21) on the shaft against the shoulder. Remove the
o-ring from the periphery of the part.
4
Put the series of compressor rings (487.21) onto the shaft against the front face of the part of the mechanical
seal.
5
Push the suction impeller (231.21) onto the shaft. Do not insert the o-ring (412.21) at this stage.
6
Measure the gap between the suction impeller (231.21) and case (100.21), and adjust it according to Table 3
by taking off or adding compressor rings (487.21). While measuring the gap, make sure that both the case
and the suction impeller are tightly in their guideway pressed all the way to the bottom. Measure the gap
between the end of the suction impeller hub and the case because the front face of the vanes is slightly
conical.
7
After adjusting the gap, remove the parts again so as to perform the actual assembly.
8
Push the outer rotating part of the mechanical seal onto the shaft against the shoulder.
9
Install the static part of the mechanical seal into the case (100.21). Fasten the socket head capscrews
(914.21).
10 Push the case (100.21) into its guideway into the adapter (344.31).
11 Push the inner rotating part of the mechanical seal (433.21) onto the shaft. Put the o-ring (which was
removed in item 3) back into its groove to the periphery of the part.
12 Push the compressor rings (487.21) onto the shaft against the front face of the part of the mechanical seal.
13 Place the o-ring (412.21) into its groove inside the suction impeller and then push the suction impeller
(231.21) onto the shaft.
14 Push the cylinder pin (562.21) into its hole in the case (100.21).
15 Place the o-ring (412.23) into its groove in the case (100.21).
16 Install the case cover (161.21) into its guideway into the adapter (344.21). Tighten the hexagon head screws
(901.21). Continue the assembly according to the following section ”Installation of impeller”.
Air separating pump, element single (type RM11)
1
Press the stationary seat of the mechanical seal (433.21) with its o-ring into the adapter (344.31) without
damaging the sliding surface of the seal.
2
Fix the stuffing box housing (451.21) to the bearing housing (330.31) with the nuts (920.22) of the studs
(902.22). Do not damage the sliding surface of the seal.
3
Fix the rotating part of the mechanical seal (433.21) on the expeller (235.21), making sure it fits tightly
against the shoulder and lock it with the locking screws of the seal. The sliding surfaces must not be
damaged.
4
Push the expeller with seal onto the shaft.
