Dry-Running Protection - Wilo Actun OPTI-MS Serie Instrucciones De Instalación Y Funcionamiento

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6.5.2. Horizontal pump installation
This installation method is only permissible in conjunction with a cooling shroud. In this
process, the pump is directly installed in the water tank / reservoir and flanged to the
pressure pipe. The cooling shroud's supports have to be installed at the specified dis-
tance in order to prevent bending of the unit. For more information, see the installation
and operating instructions for the cooling shroud in question.
The connected piping must be self-supporting, i.e. it must not be supported by
the unit.
In the case of horizontal installation, the pump and piping are installed separately.
Make sure that the pressure connection for the pump and the pressure connection for
the piping are at the same height.
1.
Drill the fixation holes for the support into the floor of the operating space (tank/
reservoir). See the relevant instructions for information about the anchor bolts, distanc-
es between holes and size of holes. Pay attention to the required tightness of screws
and anchors.
2.
Fasten the supports to the floor and move the pump into the correct position using
suitable hoisting gear.
3.
Fasten the pump to the supports with the fixation material provided and make sure the
rating plate is facing upward.
4.
Once the pump has been firmly installed, the pipe system can be mounted or a pipe
system installed previously can be attached. Make sure that the pressure connections
are at the same height.
5.
Connect the discharge pipe to the pressure connection. The threaded connection must
be sealed. Make sure that the pipe system was installed vibration-free and stress-free
(if necessary, use elastic adaptors).
6.
Route cables in such a way that they do not pose a danger to anyone (maintenance
personnel, etc.) at any time (during operation, during maintenance work, etc.). The con-
nection cables must not be damaged. The electrical connections must be carried out by
an authorized expert.
6.6.

Dry-running protection

Fig. 7: Positioning the water level sensor
1
Unit
2
Water level sensor
Submersible pumps are cooled by the fluid. Therefore, the motor must always be
immersed. In addition, it is also important to ensure that no air enters the hydraulics
housing. The pump must therefore always be immersed in the fluid up to the top edge
of the hydraulics housing. For optimum operational reliability, we recommend installing
a dry-running protection system.
72
A
Water level sensor identifies: Water available
8
Water level sensor identifies: No water
INSTALLATION
WILO SE 11/2018 DIN A5

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