Install The Pump; Piping Checklist; Coupling Alignment - Xylem LOWARA e-MPA Manual De Instalación, Funcionamento Y Mantenimiento

Frequency Hz Phase ~
50 3
60 3
Use cable according to rules with 3 leads
(2+earth/ground) for single phase versions and
with 4 leads (3+earth/ground) for three-phase
version.
4.3

Install the pump

4.3.1 Mechanical installation
Check the following before installation:

Use a concrete of compressive strength
class C12/15 which meets the
requirements of exposure class XC1 to EN
206-1.

The mounting surface must have set and
must be completely horizontal and even.

Observe the weights indicated.
Install the pump set
Check that the foundation has been prepared in
accordance with the dimensions given in the
outline drawing/general arrangement drawing.
For information about the pump base and anchor
holes, see Figure 13.
1. Position the pump set on the foundation
and level it with the help of a spirit level that
is placed on the discharge port.
The permissible deviation is 0.5 mm/m.
2. Remove the plugs covering the ports.
3. Align the pump and piping flanges on both
sides of the pump. Check the alignment of
the bolts.
4. Fasten the piping with bolts to the pump.
Do not force the piping into place.
5. Use shims for height compensation, if
necessary.
Always fit shims, if any, immediately to the
left and right of the foundation bolts
between the baseplate/foundation. For a
bolt-to-bolt distance (L) > 800 mm, fit extra
shims halfway between the bolt holes.
6. Make sure that all shims lie perfectly flush.
7. Insert the foundation bolts into the holes
provided.
8. Use concrete to set the foundation bolts
into the foundation.
9. Wait until the concrete has set firmly, and
then level the baseplate.
10. Tighten the foundation bolts evenly and
firmly.
11. Grout the baseplate with low-shrinkage
concrete.
NOTE:

If the transmission of vibrations can
be disturbing, provide vibration-
damping supports between the pump
and the foundation.
Mount the pump to a base frame
Be sure to check that the following are adhered
to:

Solid base frame which does not twist or
UN [V] ± %
230/400 ± 10
400/690 ± 10
220/380 ± 5
380/660 ± 10
vibrate during operation (resonance).

Mounting surfaces of the pump feet and
the motor on the base frame must be flat
(machining is recommended).

Safe fastening of pump and motor must be
guaranteed.

Adequate space between pump and motor
shaft must be left depending on the used
coupling.

Between pump and base frame must be an
adequate shimming, so that in case of
replacement the same height between
bottom and centerline can be adjusted
(recommended vertical adjustment 4-6
mm).
4.3.2

Piping checklist

Check that the following are adhered to:

The suction lift line has been laid with a
rising slope, at positive suction head line
with a downward slope towards the pump.

The nominal diameters of the pipelines are
at least equal to the nominal diameters of
the pump ports.

The pipelines have been anchored in close
proximity to the pump and connected
without transmitting any stresses or strains.
CAUTION:
Welding beads, scale and other
impurities in the piping damage the
pump.

Free the piping from any impurities.

If necessary, install a filter.
4.3.3

Coupling alignment

After mounting to the foundation and the
connection of the piping, the coupling must be
adjusted again, even if the unit was delivered
completely mounted on the frame.
Remove the coupling guard
For information see Figure
1. Unscrew the fixing devices.
Remove the coupling guard – upper half (1).
2.
Remove the coupling guard – lower half (2).
3.
4. Open and lift the supporting/adjusting ring (3).
Alignment
For information see Figure
1. Loosen screws of the motor foot.
2. Place the ruler (1) axially on both coupling
halves.
3. Leave the ruler (1) in this position and turn
the coupling by hand.
–
The coupling is aligned correctly if
the distances 'a' and 'b' to the
respective shafts are the same at all
points around the circumference.
–
The radial and axial deviation
between the two coupling halves
must not exceed the values set by
the manufacturer, during standstill as
well as at operating temperature and
under inlet pressure.
4. Check the distance between the two
coupling halves around the circumference
with a gauge (2).
en - Original instructions
14.
15.
21