Coupling Alignment - Lowara e-NSC Série Manuel D'installation, D'utilisation Et D'entretien

• Use a concrete of compressive strength class
C12/15 which meets the requirements of expo-
sure class XC1 to EN 206-1.
• The mounting surface must have set and must
be completely horizontal and even.
• Observe the weights indicated.
Mount the unit to a foundation
For information about the pump base and anchor
holes, see Figure 14 .
Check that the foundation has been prepared in ac-
cordance with the dimensions given in the outline
drawing/general arrangement drawing.
1. Position the pump set on the foundation and
level it with the help of a spirit level that is
placed on the shaft and discharge nozzle.
The permissible deviation is 0.2 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 (2) for height compensation, if nec-
essary.
Always fit shims, if any, immediately to the left
and right of the foundation bolts (3) between the
baseplate/foundation frame and the foundation.
For a bolt-to-bolt distance (L) > 800 mm, fit ex-
tra shims (2) halfway between the bolt holes.
6. Make sure that all shims lie perfectly flush.
7. Insert the foundation bolts (3) into the holes pro-
vided.
8. Use concrete to set the foundation bolts (3) into
the foundation.
9. Wait until the concrete has set firmly, and then
level the baseplate.
10. Tighten the foundation bolts (3) evenly and firm-
ly.
Note:
• For baseplates, it is recommended to grout the
baseplate with low-shrinkage concrete.
• If the transmission of vibrations can be disturb-
ing, 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 vibrate
during operation (resonance).
• Mounting surfaces of the pump feet and the mo-
tor on the base frame must be flat (machining is
recommended).
• Safe fastening of pump and motor must be guar-
anteed.
• Adequate space between pump and motor shaft
must be left depending on the used coupling.
• Between pump and base frame must be an ade-
quate shimming, so that in case of replacement
the same height between bottom and centerline
can be adjusted (recommended vertical adjust-
ment 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 down-
ward slope towards the pump.
• The nominal diameters of the pipelines are at
least equal to the nominal diameters of the pump
nozzles.
• The pipelines have been anchored in close prox-
imity to the pump and connected without trans-
mitting any stresses or strains.
CAUTION:
Welding beads, scale and other impuri-
ties in the piping damage the pump.
• Free the piping from any impurities.
• If necessary, install a filter.
• Follow the "Permitted Forces and torques on the
flanges".
The data on forces and moments apply to static
pipelines only. The values are only applicable if the
pump is installed on a baseplate and bolted to a rigid
and level foundation.

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.
Figure 4: Alignment of standard coupling
Figure 5: Alignment of spacer coupling
1. Coupling guard upper half
2. Coupling guard lower half
3. Adjusting piece
Remove the coupling guard.
1. Loosen the support foot and re-tighten it without
transmitting any stresses and strains.
2. Place the ruler (1) axially on both coupling
halves.
en - Original instructions
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