11
Pump Typ Z
Version: 27215 -G.1
Schmalenberger GmbH + Co. KG
D-72072 Tübingen / Germany
Depending on the type of system and pump
being used, it is recommended that
backflow prevention and shut-off devices
are installed.
Expansion of the pipes due to temperature
must be remedied by suitable measures.
We recommend the installation of
compensators in the pipeline.
Valves that close very suddenly (abruptly)
must be avoided in the pipework. The
resulting pressure surges can greatly
exceed the maximum permitted housing
pressure of the pump! To prevent too
strong pressure surges dampers or blast
tanks should be installed .
Often welding beads, scales and other
impurities do not get dislodged for some
period of time. They should be kept clear of
the pump by inserting a sieve in the suction
pipe. The free cross-section of the sieve
must be 3 times the cross-section of the
pipe so that there is not too large a
resistance built up due to foreign bodies
that flow in. Hat-shaped sieves containing a
mesh wire net having a mesh size of 2.0
mm and 0.5 mm wire diameter made of
corrosion resistant material have proved
useful in practice.
3.3.4
Electrical Connections
The electrical connections to the pump
must be carried out by a specialised
company in the electrical engineering
branch approved by the local energy
provider, taking into account the technical
connection requirements.
The connections must be carried out by a
qualified electrician.
The relevant DIN VDE (Association of
German Engineers) regulations must be
observed.
Compare the available power supply
voltage with the details on the motor’s
factory plate and select the appropriate
switching.
We recommend the use of a motor
protection facility.
In compliance with VDE 0530-8, three-
phase motors are always wired for
clockwise rotation (looking at the motor
shaft stub).
The direction of rotation of the pump is anti-
clockwise as standard (viewed from the
suction flange).
Always note the arrow on the pump
indicating the direction of rotation.
Connect the motor according to the circuit
diagram in fig. 1 or fig. 2.
Delta connection
(low voltage)
Fig. 1
Connection for 3-phase motors,
connection
Important
Pipe compensators must not
be used to make up for
inaccuracies in the pipelines,
for example with a centre offset
of the flange.
Information:
At the end of installation, before
starting up the system the
containers, pipes and
connections must be
thoroughly cleaned, rinsed and
blown through.
Risk of explosion!
Where there is a risk of
explosion a motor protection
device must be fitted!
W2
U2
V2
U1
V1
W1
L2
L1
L3
