Submersible Pumps; Wiring The Pump - Lorentz PSk2-7 Manuel D'installation Et De Fonctionnement

9.2 Submersible Pumps

The submersible motor is factory-filled with water, but the
motor filling must be checked before installation.
The motor must be filled in vertical position (coupling show-
ing upwards, see figure below, "Figure 20: Filling, venting
and drainage hole").
To fill the motor with water, remove the filling and venting
screw. Fill clean drinking water in to the motor until the
water flows out continuously without bubbles.
NOTE: Do not fill the motor using a high
pressure source such as a tap or hose as
this will cause unwanted bubble
formation.
To refill the motor open the filling, venting and drainage
screws to allow water to exit from the drainage hole. Refill
the motor with clean drinking water as described above.
Figure 20: Filling, venting and drainage hole
venting hole
drainage hole

9.2.1 Wiring the pump

The motor cables of the pump have a marking to allow
correct wiring. Connect the wires using this sequence:
ƒ 1:
ƒ 2:
ƒ 3:
ƒ
The submersible pump must be submerged in water before
checking the correct rotational direction. The correct rotation
filling hole direction for submersible pumps is counter-clockwise,
viewed from the top. It is also labelled with an arrow on the
pump end.
Pump Installation
CAUTION - No disconnect switches must
be installed between the motor and the
pump controller. Connecting the motor
wire to the switched-on controller might
irreparably damage it. Such damage is
excluded from the warranty.
CAUTION – If the pump wires are in the
wrong order, the motor will run in reverse
and the pump will not function correctly.
Damage may result. Check the direction
before installing the pump. The proper
direction is counter-clockwise when
viewed from above.
CAUTION – Never let the pump run dry.
Dry running will damage the pump and
void the warranty. LORENTZ requires dry
run protection for every submersible
pump system.
Motor cable L1
Motor cable L2
Motor cable L3
: GND
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