Richter RMA-B Series (ASME) - Manual (Page 20)

Series RMA-B close-coupled design Page 20
9475-055-en Revision 14
TM 8256 Edition 06/2011
Motors acc. IEC-standard:
After setting the “F” dimension, use a 1/4” drill bit
to drill 1 hole 1/16” deep where the set screw
contact the key. This will ensure there is no
movement of the outer drive during operation.
See sectional drawing in Chapter 9.2.
Tighten 2 setscrews 904/1 (NEMA-motor) or 1
setscrew 904/1 (IEC-motor) to the motor shaft
using access hole in the adapter. Protection by
Loctite 243.
Check dimension “F” (see Fig. 6 under Section
7.7).
Check whether the hollow drive shaft / drive
magnet assembly unit can be easily turned.
7.8.4 Final assembly
Deposit the housing 100 on a workbench, for
example, with the suction nozzle facing
downwards. In doing so, protect the plastic sealing
strip against damage with a suitable base.
Insert housing gasket 401 into the centering of the
housing 100.
Mount pre-assembled slide-in unit concentrically
onto the shaft spider 338.
Press outer wear ring 502/1 into the housing 100.
Insert pre-assembled can unit. The lip of the can
insert 158 must rest on the housing gasket 401.
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 Chapter 1.1.
Check whether the rotating unit has the necessary
axial play. For this purpose reach through the
suction nozzle and move the rotating unit axially.
The axial play can be determined through the
discharge nozzle. See Chapter 7.7.1.
If the minimum axial play is not attained, insert
more housing gaskets 401.
Insert bearing pedestal gasket 404 into the
appropriate location on the bracket 344.
When inserting the unit, high axial
magnetic forces (up to max. 400 N
without weight force) occur which
decrease abruptly after reaching
maximum.
Only hold the bearing pedestal in front
of the flange (on motor side).
(Risk of injury from being squeezed)
Push drive unit using the crane into the bracket
344.
Tighten bracket screw 901/5 slightly.
Align support bracket.
Tighten bracket screw 901/5 firmly.
Tightening torque group 1 = 354 in-lbs (40Nm)
Tightening torque group 2 = 486 in-lbs (55Nm)
Seal the thread for the forcing-off screws in the
bracket and the opening in the adapter with
plugs.
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