Level Control; Dry-Running Protection - salmson Rocsan SDL Serie Notice De Montage Et De Mise En Service

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• Secure the lifting equipment to the pump with
the shackle, lift the pump and then lower slowly
on to the guide pipes in the operating space.
• Hold the power supply cables slightly taut
when lowering.
• When the pump is connected to the suspension
unit, make sure that the power supply cables
are secured adequately against falling off and
damage.
• Have the electrical connections made by a
qualified electrician.
• The pressure connection is sealed by its own
weight.
4. Installing optional accessories, such as dry-run-
ning protection or level controls.
5. Commissioning the pump: about 2-4 h
• As described in the "Commissioning" section
• For new installation: Flood the operating space
• Vent the pressure pipe.
5.3.3. Portable wet well installation
In this installation type, the pump has to be
equipped with a pump foot (available as an op-
tion). This is attached to the suction port and en-
sures the minimum ground clearance and a secure
footing if placed on a solid bearing surface. In this
version, the pump can be positioned anywhere in
the operating space. If used in an operating space
with a soft bearing surface, a hard base must be
used to prevent sinking. A pressure hose is con-
nected on the pressure side.
If operated for longer periods of time in this in-
stallation type, the pump must be fastened to the
floor. This prevents vibration and ensures quiet
and low-wearing running.
If the motor emerges during operation, the
following operating parameters must be strictly
observed:
• The max. fluid temperature and ambient tem-
perature is 40 °C.
• Details for "Non-immersed operating mode"
Fig. 3.: Portable installation
1 Lifting gear
2 Pump foot
Pipe elbow for hose
3 connection or Storz
pipe coupling
4 Storz pipe coupling
Work steps
1. Preparing pumps: about 1 h
• Install the pump foot on the suction connec-
tion.
• Install the pipe elbow on the pressure connec-
tion.
• Fasten the pressure hose to the pipe elbow
with a hose clip.
Alternatively, a Storz pipe coupling can be
44
5 Storz hose coupling
6 Pressure hose
Min. water level for im-
7a
mersed operation
Min. water level for
7b
non-immersed operation
installed on the pipe elbow and a Storz hose
coupling can be installed on the pressure hose.
2. Installing the pump: about 1-2 h
• Position pump in installation location. If neces-
sary, secure lifting equipment to the pump with
a shackle, lift the pump and then lower to the
intended location (pump chamber, pit).
• Check that the pump is vertical and on a solid
bearing surface. Avoid sinking.
• Route the power supply cable in such a way
that it cannot be damaged.
• Have the electrical connections made by a
qualified electrician.
• Route the pressure hose so that it is not
damaged and fasten it at certain points (e.g.
outflow).
RISK of pressure hose becoming separated!
Uncontrolled separation or movement of the
pressure hose can result in injuries. Secure the
pressure hose appropriately. Prevent buckling
of the pressure hose.
3. Commissioning the pump: about 1-3 h
• As described in the "Commissioning" section

5.3.4. Level control

Fill levels can be determined using the level
control system, meaning the pump is switched on
and off automatically. The fill level can be record-
ed using float switches, pressure and ultrasound
measurements or electrodes.
Note the following information:
• When using float switches, ensure that they can
move freely in the operating area!
• The water level must not fall below the minimum!
• The maximum switching frequency may not be
exceeded!
• If the fill levels fluctuate strongly, then a level
control should be made on two test points as
standard. This means larger differential gaps are
reached.
Installation
For correct installation, please see the installation
and operation instructions for the level control
device.
Observe the information on the maximum
switching frequency and the minimum water
level!

5.4. Dry-running protection

To ensure the necessary cooling, the pump must
be immersed when in operation, depending on
the operating mode. In addition, make sure that
no air enters the hydraulics housing.
The pump must therefore always be immersed
in the fluid up to the top edge of the hydraulic
housing or, if applicable, up to the top edge of
the motor housing. For optimum operational
reliability, we recommend installing a dry-running
protection system.
Wilo Salmson France SAS 11-2016 V05 DIN A4
INSTALLATION