Pump Installation 6564 Pump Installation
EN ENCS-G pumps are supplied along with a base plate
that has to be mounted to the bottom of the pump.
Use only the screws that are supplied with this base
plate, do not install this pump without this base
plate.
Space – During installation, make sure that there
is enough space available to permit subsequent
disassembly of the motor unit. It is recommended to
have at least 1m of free space above the pump.
8.3.2 Motor wiring
8.3.2.1 Connecting the motor cable
The surface pump motor has a wiring box that
contains the connection terminals for the three
motor phases.
The pump motor provides bolt terminals to connect
the motor cable. For a professional and reliable
connection it is required to use cable lugs for
connecting the motor cable to the bolt terminals.
The motor phases are labeled with "U", "V", "W".
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CAUTION – The wiring order will have
impact on the motor rotation direction.
The correct rotation direction is marked
with an arrow sticker on the pump and
motor.
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CAUTION – Observe the rotation
direction of the pump when the system
installation is nished and the pump has
been successfully primed with water.
In case the rotation direction is incorrect exchange
any two of the three motor phases to reverse the
rotation direction.
8.3.2.2 Resistance measurement
We recommend checking the winding and insulation
resist ance before connecting the pump to the
controller. For a surface pump these measurements
should be done BEFORE taking the pump into
operation.
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WARNING – Before starting any
work on the pump system, make sure
that the electricity supply has been
switched o and that it cannot be
accidentally switched on!
8.3.1 Placement and Foundation
Rain and weather protection – The pump is
equipped with IPX4-type motor protection. If it
is installed outside, the pump must be protected
from rain and direct sunlight. This will increase the
durability of your pump.
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CAUTION – CS-F and CS-G pumps must
not be submerged in water or subjected
to rain or dripping water.
CAUTION – If the pump is installed in
a humid area, eective ventilation and
aeration must be provided in order to
prevent condensation.
CAUTION – When installing in very
small installation spaces the natural
cooling may be insucient. Carefully
consider the ventilation in order not
to exceed the maximum ambient
temperature.
Figure 32: Example LORENTZ PSk3 surface pumps
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CAUTION – The pump might heat
up in operation. The pump must not be
installed on combustible surfaces. Strong
incombustible surfaces should be used,
e.g. concrete or stone surfaces.
Foundation – An arrow on the pump base shows the
direction of the ow of the uid through the pump.
It is recommended to install the pump on a concrete
foundation. The foundation must be level and should
have min. approx. 1.5 times the weight of the pump
to absorb vibration, shock and strain.
Connecting the pump to the foundation –
Fastening the pump to the foundation should be
done exclusively by means of properly sized bolts or
threads (dowels) in order to avoid any movement of
the pump unit.
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CAUTION – The pump must be
mounted vertically.
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