Mechanical Installation; Installation Area; Hydraulic Connection - Lowara e-LINE Serie Manual De Instalación, Uso Y Mantenimiento

4.1

Mechanical installation

The pump unit can be fitted:
 Directly on the pipes, if these are properly anchored
and capable of taking its weight
 On a concrete foundation with optional brackets.
4.1.1

Installation area

1. If possible, install the pump unit above the level of
the floor.
2. Make sure that the installation area is protected
against any fluid leaks or flooding.
3. Observe the requirements in the section
Operating environment.
Air clearance between a wall and the motor fan
grille
 To ensure suitable ventilation: ≥ 100 mm
 To permit inspection and removal of the motor: ≥
300 mm.
If the space available is any less, refer to the
technical catalogue.
4.1.2 Permitted positions
Motor power <7.5 kW
Motor power ≥9.2 kW
See also the section Guidelines for the hydraulic
system.
4.1.3 Installation on concrete foundation
Foundation requirements
1. The dimensions must be adapted to the choice of
bracket:
 Supporting base kit for LNE models, see Fig. 4
 Bracket kit for LNE models, see Fig. 5 and Fig.
6
 Supporting base kit for LNT models, see Fig. 7.
2. The surface should be as flat and level as
possible.
3. Use concrete of compressive strength class
C12/15 which meets the requirements of
exposure class XC1 according to EN 206-1.
Anchoring the pump unit to the foundation
1. Remove the plugs covering the flanges, if
present.
2. Place the pump unit on the foundation and check
it with a spirit level.
3. Align the pump unit and the flanges of the pipes
on both sides of the pump unit; check alignment
of the bolts.
4. Tighten the foundation bolts evenly and firmly.
4.1.4 Reducing vibrations
The motor and flow of liquids in the pipes may cause
vibrations which can be exacerbated by incorrect
installation of the pump unit and pipes. To reduce
vibrations:
 Anchor the pump unit properly to a concrete
foundation
 Install vibration dampers and anti-vibration joints
(see Fig. 17 and Fig. 18).
4.2

Hydraulic connection

WARNING:
 All the hydraulic connections must be
completed by an installer possessing the
technical-professional requirements
outlined in the current regulations
 Use pipes of a suitable size that can
withstand the maximum operating
pressure; the system may otherwise
collapse and pose the risk of physical injury
and damage to property.
4.2.1 Guidelines for the hydraulic
system
1. Refer to the representative hydraulic diagrams in
Fig. 17 (positive suction head installation) and
Fig. 18 (suction lift installation).
2. The liquid should flow in the direction of the arrow
on the body of the pump unit.
3. Do not install the pump unit at the lowest point of
the system, to avoid the accumulation of
sediments.
4. Install an automatic relief valve at the highest
point of the system to eliminate air bubbles.
5. Remove any welding flash, deposits and
impurities in the pipes that could damage the
pump unit; install a filter if necessary.
6. Support the pipes independently to prevent these
from weighing on the pump unit.
7. In the case of suction lift installation, assemble
the pipes at an angle upwards to the pump unit to
avoid air pockets.
8. Install anti-vibration joints on the suction and
delivery sides of the pump unit to reduce the
transmission of vibrations between the pump unit
and system.
9. In order to reduce flow resistance, the pipe on the
suction side must be:
 As short and straight as possible and without
bottlenecks, covering a length equal to at least
six times the diameter of the flange.
 Wider than the suction flange; if necessary,
install an eccentric reducer that is horizontal on
top
 With bends of as wide a radius as possible
 Without traps and 'goosenecks'
en - Original instructions
19