V&A RICHTER RMI-B Series, Installation And Operating Manual

Page: 20 / 36

Series RMI-B
close-coupled design
Page
20
9430-055-en Revision 00
TM 9886 Edition 03/2018
7.8 Assembly
A complete assembly process is described in the fol-
lowing.
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 ap-
prox. 2 mm shorter than the plain bearing.
♦ Insert distance ring 504/1 and then bearing bush
545/2 .
♦ Carefully press the thrust ring
510/2
into the im-
peller
230
right to the stop. In doing so, pay atten-
tion to the correct position of the anti-rotation
grooves relative to the driving props in the impeller
230 .
♦ Check whether the thrust ring protrudes about 2
mm out of the impeller. See Fig. 9
.
Fig. 9
♦ Put together can 159 and can insert 158 . For
ease of assembly, the can insert
159
can be
cooled as required.
♦ Insert the thrust ring 510/3 into the can insert
158 . Make sure that the flushing grooves are di-
rected outwards.
♦ Press shaft
222
in the can insert
158
.
CAUTION: Align the shaft according to
the two flat in the thrust ring (danger of
fracture of the silicon carbide)
Fig. 10
7.8.3 Assembly of drive unit
♦ Attach the adapter 346 to the motor flange using
hex. screws
901/7
.
♦ Check the drive magnet assembly
858
fit.
♦ Screw both setscrews 904/1 into the drive mag-
net assembly slightly.
♦ Push the drive magnet assembly 858 completely
onto the motor shaft, using anti-seize special
paste (for example, Weicon).
Caution: Use new setscrews.
♦ Before assembly, apply a drop of LOCTITE Type
242 (blue) to the setscrews 904/1 .
♦ Tighten both setscrews 904/1 with the indicated
torque through the hole in the adapter.
Tightening torque group 1.1 + 1.2 = 8 Nm
Tightening torque group 1.3 = 10 Nm