Richter RMA Series, Installation And Operating Manual

Page: 20 / 36

Series RMA-B
close-coupled design
Page 20
9450-055-en Revision 01
TM 9886 Edition 11/2018
7.8 Assembly
A complete assembly process is described in the
following.
Sub-sections can be deduced from this.
7.8.1 Assembly of housing / shaft spider
♦ Push or press the shaft spider 338 into the housing
100 together with the two anti-torsion inserts
566/1
.
Use a suitable plastic tube for pressing.
The pressing force must only be
applied over the sliding surface of the
shaft spider.
(risk of the silicon carbide breaking)
♦ Insert shaft sleeve 523/1 into the shaft spider 338 .
7.8.2 Assembly of slide-in unit
♦ Press the inner magnet assembly 859 onto the
impeller 230 . Pay attention to the correct alignment
of the driver cams.
♦ Press the circlip 932/7 into the appropriate groove
on the impeller
230
with a suitable plastic tube.
Make sure that the click connection of the circlip
932/7 audibly engages to perform its function.
♦ Press the bearing bush 545/1 into the impeller 230
together with the anti-torsion insert 566/2 .
Make sure that the anti-torsion insert 566/2 is
approx. 2 mm shorter than the plain bearing.
♦ Insert the distance ring 504 and then the bearing
bush 545/2 .
♦ Carefully press the thrust ring 510/2 into the
impeller 230 right to the stop. Pay attention to the
correct position of the anti-torsion insert grooves in
relation to the carrier webs in the impeller
230
.
♦ Check whether the thrust ring protrudes about 2
mm out of the impeller. See
Fig. 8
.
Fig. 9
♦ Assemble can 159 and can insert 158 . To
simplify assembly, the can insert 159 can be
cooled if necessary.
♦ Introduce thrust ring 510/3 into the can insert
158 . Make sure that the flushing grooves are
facing outwards.
♦ Press shaft 222 into the can insert 158 .
CAUTION: Align the shaft with the flat
pivot point in the thrust ring (risk of
the silicon carbide breaking)
Fig. 10
7.8.3 Assembly of drive unit
♦ Affix adapter 346 to the motor flange with hex.
screws 901/7 .
♦ Check fit of the drive magnet assembly 858 .
♦ Screw both setscrews 904/ 1 into the drive
magnet assembly slightly.
♦ Push the drive magnet assembly 858 completely
onto the motor shaft, using the anti-seize special
paste (for example, Weicon).
Caution: Use new setscrews.
♦ Before assembly, apply a drop of LOCTITE Type
242 (blue) to the 904/1 setscrews.
♦ Tighten both setscrews 904/1 with the indicated
torque through the hole in the adapter.
Tightening torque group 1 = 70 in-lbs (8 Nm)
Tightening torque group 2 = 90 in-lbs (10 Nm)