Wilo Wilo-Rexa NORM, Инструкция по установке и эксплуатации

Страница: 18 / 32

18 WILO SE 04/2021 DIN A4
English INSTALLATION
• Place the pump horizontally on a solid surface.
Support the bare shaft versions without baseplate
under the bearing housing.
• Secure the pump against falling over and slipping.
DANGER due to risk of falling over!
Never set the pump down if unsecured. If the
pump falls over, there is a risk of injury!
• The store room must be dry and frost-free. The
minimum temperature must be 3 °C (37 °F), the
relative humidity may not be higher than 65 %.
We recommend a storage temperature between
5 °C (41 °F) and 25 °C (77 °F).
The pump must be protected from direct
sunlight!
• The pump is not allowed to be stored in rooms
in which welding work is carried out because the
resulting gases or radiation can damage the elas-
tomer components and coatings.
• Suction and discharge connections must be
sealed securely.
• The coupling must be protected from dust and
sand.
• The impellers should be turned at regular intervals
(fortnightly to monthly). This prevents the bea-
rings from jamming and renews the lubrication
film on the mechanical seal.
WARNING! Sharp edges!
harp edges may form on the impeller and
on the openings of the suction and pressure
ports. There is a risk of injury! Wear protec-
tive gloves.
Please note that elastomer components and
coatings become brittle over time. We recom-
mend that if the unit has been in storage for
more than 6 months in the case of power packs
or more than 12 months in the case of the bare
shaft version, it should be checked and replaced
if necessary. Please consult the Wilo customer
service for details.
4.4. Return delivery
Pumps that are returned to the factory must be
properly packaged. This means that impurities
have been removed from the pump and that it has
been decontaminated if used to pump fluids that
are hazardous to health.
For shipping, the parts must be packed in tear-
proof plastic bags of sufficient size in such a
manner that they are tightly sealed and leak-
proof. Furthermore, the packaging must protect
the pump from damage during transportation. If
you have any questions, please contact the Wilo
customer service!
5. Installation
In order to prevent damage to the device or seri-
ous injury during installation, the following points
must be observed:
• Installation work – assembly and installation of
the pump – may only be carried out by qualified
persons. The safety instructions must be followed
at all times.
• The pump must be inspected for transport da-
mage before any installation work is carried out.
5.1. General
For design and operation of technical sewage
systems, observe the pertinent local regulations
and directives for sewage technology (such as
those of sewage technology associations).
Note that, in stationary installations, pressure
surges can occur in cases where water is pumped
with longer pressure pipes (especially with steady
ascents or steep terrain). Pressure surges can
result in destruction of the hydraulics/system and
noise pollution due to flap knock. Pressure surges
can be prevented by applying suitable measures
(e.g. swing check valves with an adjustable clo-
sing time or special routing of the pressure pipe).
Never let the pump run dry. Air pockets in the
hydraulics or pipeline system must be avoided at
all costs and must be removed using a suitable
ventilation system.
Protect the pump from frost.
5.2. Installation types
• Horizontal stationary dry well installation
5.3. Installation
NOTICE
Also note all the information regarding installa-
tion in the operating and maintenance manual
for the motor and the coupling!
The following information should be taken into
consideration when installing the pump:
• Assembly work must be carried out by trained
specialists, electrical work must be carried out by
a qualified electrician.
• Check that the available consulting documents
(installation plans, layout of the operating space,
intake ratios) are complete and correct.
• Also refer to all regulations, rules and laws for
working with heavy and suspended loads. Wear
appropriate protective clothing/equipment.
• Please also observe the applicable national
accident prevention and safety regulations of
professional and trade associations.
5.3.1. Installation site
NOTICE
Note the requirements in the operating and
maintenance manual for the motor!
• The installation site must be clean, dry, frost-free
and designed for the respective product.
• Appropriate ventilation must be provided to
ensure air exchange for heat dissipation.