Reassembly; Preparation - Xylem Vogel Pumpen MPB Série Instructions De Montage, De Service Et De Maintenance

Installation, Operating and Maintenance Instruction
A number of methods can be used for repair work.
Depending on the area (A to G) the following methods
can be used. In certain cases, it is better to use new
parts.
"A": Reworking the outer diameter (levelling), the gap
width should not exceed the value stated in the
table. The new surface should be as fine as
possible (grind). Polish the surface using a
grinding belt.
"C": .) ......... Replace impeller (only use original
parts)
.) ......... Turn away impeller hub and make an
appropriate spacer sleeve (take care with
material selection)
It might be necessary to rework the bore in the
diffuser
"D": .) ......... Replace impeller (only use original
parts)

9. Reassembly

9.1 Preparation

Assembling a pump consisting of new parts requires
preliminary work. Therefore some of the following
points might already have been carried out when the
pump is reassembled. Always use the sectional
drawing contained in the Appendix of the Operating
Instructions.
Clean all components and remove any rust.
Suction casing (3):
Screw in the casing screws (25)
Press in the bearing bush (21)
MPB 100-english
Article No 771074115
.) ......... Rework seal (level), hollow out casing
and insert ring (split ring).
"E": .) ......... Replace impeller (only use original
parts)
.) ......... Rework seal (level), hollow out casing
and insert ring (split ring).
"F": The precise gap width in this area is only
necessary in special cases (shaft seal with
discharge line). In normal cases, the gap width is
unimportant. The value specified in the table may
be exceeded.
"G": New parts (only use original parts)
Bearing play has a direct influence on the smooth
running of the pipe. If pump oscillation rises
perceptibly this can indicate that the bearing is
worn.
When carrying out repairs always replace the
bearing bush (23) and bearing sleeve (21).
Pressure casing (4):
Code "P":
Screw in the screwed plug (V2) and secure it
Code "SA, SB etc.":
Screw in the throttling element (DR) and secure it
(use the correct hole)
Gland casing (19 – only code P):
Pound in the pin (S4)
Screw in the studs (S3)
Seal cover (18):
Pound in pin (S4) and pin (S7) (if present)
page 91
Model MPB, MPV
Revision 02
Issue 01/2010