Series RMI-B
close-coupled design
Page
21
9430-005-en
Revision 03
TM 10456
Edition 06/2022
♦
See sectional drawing in
Section 9.2
.
♦
Check dimension "F" (see
figure 6
in
chapter 7.7
).
♦
Check whether the unit drive shaft / drive magnet
assembly can be easily turned.
7.8.4 Final assembly
♦
Deposit the housing
100
on a workbench, for ex-
ample, with the suction nozzle facing downwards.
Protect the plastic working strip against damage
with a suitable support.
♦
Mount pre-assembled slide-in unit concentrically
onto the shaft spider
338
.
♦
Press outer wear ring
502/1
into the housing
100
.
♦
Insert the preassembled can unit. The rim of the can
insert
158
must lie on the wear ring seal
502/1
.
Press shaft 222 carefully through the
bearing bushes 545 into the shaft spider
338. (risk of the silicon carbide breaking)
♦
Mount bracket
344
and tighten hex. screws
901/3
to the required torque, see
Section 1.1
.
♦
Check whether the rotating unit has the necessary
axial play. For this purpose reach through the suc-
tion nozzle and move the rotating unit axially. The
axial play can be determined through the discharge
nozzle. See
Section 7.7.1
.
Insert another housing seal if the minimum axial
play is not reached.
When inserting the unit, high axial
magnetic forces occur which decrease
abruptly after reaching maximum
(up to
max. 400 N without weight force)
.
Only hold the bearing pedestal in front
of the flange (on motor side).
(Risk of injury from being squeezed)
♦
Push the drive unit into the lantern
344
using the
crane.
♦
Slightly tighten lantern screws
901/5
.
♦
Align support bracket.
♦
Tighten lantern screws
901/5
.
Tightening torque group 1.1 + 1.2 = 40 Nm
Tightening torque group 1.3 = 55 Nm
♦
Screw the threads for the jacking screw in the lan-
tern and the opening in the adapter with the plug.
♦
Close the access hole in the adapter with the screw
plug
903/4
.
7.9 Tests
On request
, the pumps are tested with water at the
manufacturer's.
The operating data measured are then documented
in a works test certificate.
If, during a test after repairs, discrepancies compared
with the works certificate are discovered, the following
people can be called in:
1. in-house pump office
2. The manufacturer Richter
or its local agent
The following conveying data can be checked using
the
pump performance curves
:
♦
Flow rate
♦
Head
♦
Power requirement
♦
NPSHR
