Richter RMA Series, Installation And Operating Manual

Page: 18 / 36

Series RMA-B
close-coupled design
Page 18
9450-055-en Revision 01
TM 9886 Edition 11/2018
♦ Press impeller 230 out of the seat of the inner
magnet assembly 859 . For this purpose, clamp the
inner magnet assembly 859 in a vice, being careful
not to damage the surfaces, and press the impeller
230 out towards the suction side.
Alternatively, the dismantling device can also be
used. See assembly aids in
Chapter 10.3
.
♦ Carefully remove the remaining parts of the circlip
932/7 .
7.6.4 Dismantling housing/shaft spider
♦ Pull shaft spider 338 out of the housing seat.
♦ Remove the two anti-torsion inserts 566/1 .
♦ Remove shaft sleeve 523/1 from the shaft spider
338 .
7.7 Notes on assembly
♦ Use original spare parts. See also Chapter 2.4 .
♦ Do not use defective parts.
♦ Has the pump been shut down, drained and
flushed in accordance with the regulations?
See also
Chapter 6.3 .
♦ Apply Anti-Seize special assembly paste (e.g. from
Weicon) to the fitting surfaces (not any stainless
steel surfaces) and screw thread prior to
assembly.
♦ Check whether all parts fit and only then
assemble.
♦ Important dimensions (centerings, bearing fits or
bearing play) are to be checked prior to assembly;
perform a trial assembly if required.
♦ We recommend that the housing gasket 401 and
the shaft sleeve 523/1 be replaced during every
new assembly.
♦ When the drive magnet assembly is reassembled,
the two setscrew 904/1 must be replaced by new
ones.
Observe tightening torques, see chapter 7.8.3
♦ Always replace the circlip
932/7
.
♦ Remove metallic particles adhering to magnetic
components such as the inner magnet assembly
859 and the drive magnet assembly 858 prior to
assembly.
For this purpose simple plasticene can be used..
♦ A complete assembly process is described in the
following.
Sub-sections can be deduced from this.
See also Chapter 7.5 .
♦ The following assembly dimensions must be
observed:
Dimension F
[inch] [mm]
Group 1 3.93 100
Group 2
4.33 110
Groups see Chapter 1 .
Dimension F
End face of drive magnet assembly to contact
surface of adapter.
For safe assembly, it is advisable to check the
dimension F and the radial runout tolerance of
0.4 mm (0.016 inch) using a dial gauge.
Fig. 7
4