Installation - Wilo SUB TWU 3 Notice De Montage Et De Mise En Service

INSTALLATION

You must ensure that lifting gear can be fitted
without any trouble, since this is required for
assembly and removal of the pump. It must be
possible to safely reach the pump in its operating
and storage locations using the hoisting gear. The
machine must be positioned on a firm foundation.
For transporting the pump, the load-carrying
equipment must be secured to the appropriate
fastening points.
Electric power cables must be laid out in such
a way that safe operation and trouble-free
assembly/dismantling are possible at all times.
The pump must never be carried or dragged by
the power supply cable. When using switching
devices, they must have the appropriate pro-
tection class. Switching devices must always be
mounted in such a way that they are protected
from flooding.
The structural components and foundations must
be of sufficient stability in order to allow the
product to be anchored securely and functionally.
The operator or the supplier is responsible for the
provision of the foundations and their suitability
in terms of dimensions, stability and strength.
Use guide and deflector plates for the pumped
liquid intake. If the water jet reaches the surface
of the water, air will be introduced into the
pumped liquid. This will lead to unfavorable
current and pumping conditions for the unit.
As a result of cavitation, the pump will not run
smoothly and will be subjected to increased wear.
5.4. installation
DANGER of falling!
When installing the pump and its accessories,
work is sometimes performed directly at the
edge of the well or basin. Carelessness or
wearing inappropriate clothing could result
in a fall. There is a risk of fatal injury! Take all
necessary safety precautions to prevent this.
The following information must be observed
when installing the unit:
• This work must be carried out by a qualified
person and electrical work must be carried out
by an electrician.
• Suitable fastening devices must always be used
when transporting the unit, never the power
supply cable. The fastening device must always
be secured to the fastening points, using shackles
when necessary. Fastening devices must be tech-
nically approved.
• Check that the available planning documentation
(installation plans, layout of the operating area,
intake ratios) is complete and correct.
Installation and operating instructions Wilo-Sub TWU 3/High Speed
NOTE:
• Pumps of this type must always be submerged
during operation to attain the necessary cool-
ing. Always make sure that the minimum water
coverage is guaranteed!
• Never let the machine run dry. We recommend
that dry-run protection be installed. If fluid
levels deviate dramatically, a dry-run protection
must be installed.
• An additional non-return valve must not be
fitted on the discharge side. This causes the
system to malfunction.
• An expansion tank (1-2 liters) should be in-
stalled between the frequency converter and
tapping point. The minimizes the number of
starts due to small leaks within the pipe system.
• Check that the cable is long enough to reach the
switch box or frequency converter. The power
supply cable must be extended before installa-
tion! Kits for extending the cable are available as
accessories.
• Check whether the cross-section of the cable
used is sufficient for the length of the cable.
(For more information, consult the catalog, the
planning manuals or Wilo customer service).
• Observe all regulations, rules and legal require-
ments for working with and underneath heavy
suspended loads.
• Wear appropriate protective clothing/equipment.
• Please also observe the applicable national acci-
dent prevention regulations and trade association
safety provisions.
• Inspect the coating before installation. If defects
are found, these must be rectified before instal-
lation.
5.4.1. Motor filling fluid
The motor is filled at the factory with non-toxic
white oil, which is potentially biodegradable. This
oil filling guarantees that the pump remains frost-
proof down to -15 °C.
The motor is designed so that it cannot be filled
from the outside. Filling of the motor must be
carried out by the manufacturer.
5.4.2. Vertical installation of the pump with pipeline
Fig. 3.: installation
1 Unit
2 Adapter 1" -> 1¼"
3 Switching device
With this type of installation, the unit is installed
directly on the rising pipe. The installation depth
is determined according to the length of the ris-
ing pipe. If the well opening is narrow, a centering
apparatus must be used, since the pump may not
touch the sides of the well as this may damage
the cable and pump. Use hoisting gear with suffi-
cient lifting capacity.
Electrode for dry-
4
running protection
External frequency
5
converter
6 Tapping point
English
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