Seepex BN 5-12 Series, Operation & Maintenance Manual

Page: 119 / 309

Service and
Maintenance
Ausgabe
issue
B / 02.01.2006
Dokument
document
OM.MAI.02e
Blatt
sheet
2 (4)
7.3
Dismantling the seepex Progressive Cavity Pump
Tools are required for dismantling and re-assembly.
These tools are listed in Point 9 of the document
OM.SPT.01.
The stator (601) and the rotating pump parts can be
exchanged in site. The rotating pump parts can be
dismantled as a complete rotating unit (RTE) (Point
7.3.4) or as individual components (Point 7.3.5).
Before commencing the dismantling
of pump parts, safeguard the pump
against tipping over or falling down
by fastening it at the lantern (200).
7.3.1
Pressure Flange (700) - Dismantling
Prior to dismantling see Point 7.3.2
Before dismantling the stator (601), provide it with a
support (S) to prevent it from falling.
7.3.2
Stator (601) - Dismantling
• Maintenance tip:
Disassembly of the stator can be made consider-
ably easier by first moistening the inner surface
of the stator with antiseize agent (soft or liquid
soap). Before removing the pressure flange (700),
pour the antiseize agent into the opening between
rotor and stator on the pressure flange side. Several
clockwise (see Point 6.2.5) revolutions
of the rotor will then distribute the antiseize agent
over the inner surface of the stator and reduce
the friction between rotor and stator considerably.
• Lock drive shaft against rotation.
While dismantling the stator (601) with tool
(W2/see Point 9) prop up the rotor (600) with
support (S) to prevent it from falling.
7.3.3
Suction Casing (500) - Dismantling
Fit the rotor (600) with a protective cover (SH) and
underprop it with support (S) to prevent it from falling
down.
7.3.4
Rotating Unit (RTE) - Dismantling
CAUTION
Before dismantling the rotating unit it is essential
to comply with the specifications in document
OM.SEA.__ (Shaft Seal Dismantling).
• Remove flushing connections at shaft seal
housing (SEA).
• Raise/shift splash ring (310) and eject plug-in shaft
pin (309) in horizontal direction.
• Remove rotating unit (RTE)/plug-in shaft (307),
together with shaft seal (SEA) from output shaft of
the drive (ANT). See Point 9 for tool (W10) used for
pulling off.
• See in document OM.SEA.__, for removal of the
shaft seal (SEA) from the plug-in shaft (307).
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