Caution
Caution
RPH
9
5.3
Installing the pump / unit
After placing the pump on the foundation, align it with the help
of a spirit level placed on the shaft/discharge nozzle.
Permissible deviation 0.2 mm/m. The correct distance between
the coupling halves as specified in the general arrangement
drawing must be observed. Shims shall be fitted between the
baseplate and the foundation itself; they shall always be
inserted to the left and right of the foundation bolts and in close
proximity to these bolts. For a bolt-to-bolt clearance > 800 mm,
additional shims shall be inserted halfway between the
adjoining holes. All shims must lie perfectly flush.
Insert the foundation bolts and set them into the foundation
using concrete. When the concrete has set, align the baseplate
as described in Fig. 5 and tighten the foundation bolts evenly
and firmly. Then grout the baseplate using low-shrinkage
concrete with a standard particle size and a water/concrete ratio
of
£
0.5. The flowability must be produced with the help of a
solvent. Secondary treatment of the concrete to DIN 1045 is an
absolute necessity.
Shim
Shim
Foundation bolts
³
800
Shim
Fig. 5
Fitting required shims
To ensure low-noise operation, the unit can be mounted on
vibration dampers (please confirm with KSB first). Expansion
joints can be fitted between pump and suction/discharge line.
5.3.1
Aligning the pump / drive
The pump unit consisting of pump, coupling and drive has been
mounted on a common baseplate and carefully aligned in the
manufacturing works.
The following instructions also apply to units not mounted on a
common baseplate.
After connecting the piping and priming the
system, it is essential to re-check the alignment
at operating temperature.
Incorrect alignment and inadmissible coupling
displacement
will
affect
the
operating
behaviour and may result in damage to the bearings and shaft
seals as well as premature coupling wear.
Please note:
The pump set is correctly aligned, if a straight-edge placed
axially on both coupling halves is the same distance from each
shaft at all points around the circumference. In addition, the
distance between the two coupling halves must remain the
same all around the circumference. Use a feeler gauge, a
wedge gauge or a dial micrometer to verify (see Fig. 6 and
Fig. 7).
Straight-edge
Straight-edge
Gauge
a
a
b
b
Fig. 6
Aligning the coupling with the help of a gauge and
a straight-edge
a
b
a
b
Gauge
Straight-edge
Straight-edge
Fig. 7
Aligning a spacer-type coupling
The radial and axial deviation between the two coupling halves
must not exceed 0.1 mm.
The alignment of the pump and drive shall preferably be
checked by means of a dial micrometer. For this purpose
remove the coupling spacer after having marked its installation
position by dotting marks (balancing condition).
At the same time check the motor’s direction of rotation, with the
pump decoupled (see 6.1.4). The direction of rotation must
correspond to the direction indicated by the arrow on the pump.
Verify by switching the motor on and then off again immediately.
Fig. 8 illustrates examples of possible dial micrometer
arrangements.
1122:48
Fig. 8
Aligning a spacer-type coupling with a dial
micrometer
Admissible run-out of coupling face (axial) max. 0.1 mm.
Admissible radial deviation, measured over the complete
circumference, max. 0.2 mm.
5.3.1.1 Aligning the complete unit
To align the complete unit, undo bolt 901.4 and fixing bolts
901.61 on the assembling aid (if any).
Undo pump fastening elements and align pump and motor.
(Compensate for any differences in height between pump and
motor by means of appropriately sized sheet packs under the
feet of the drive). On pump units with larger motors, horizontal
motor alignment shall be effected by means of alignment
devices). Re-tighten the bolts on the pump foot and the motor
bolts.
If any, tighten fixing bolts 901.61 as well as bolt 901.4 and
re-check alignment. For subsequent alignment at operating
temperature proceed in the same way.
If other couplings are used, please refer to the enclosed
supplementary operating instructions.
5.3.2
Place of installation
The volute casing and discharge cover take on roughly
the same temperature as the fluid handled. The bearing
bracket may not be insulated.
Take the necessary precautions to avoid burns!
