Pump Motor Wiring - Lorentz PS Série Manuel D'installation Et De Fonctionnement

44 Pump Installation

8.4.2 Pump Motor Wiring

WARNING – The wiring has to be done by
qualified service personnel only.
WARNING – Beware of high voltage!
Electric shock hazard!
The ECDRIVE must be connected to the terminals L1, L2, L3
and GROUND. The ECDRIVE requires four-conductor (four-
wire) cable between the controller and the motor. The three
wires L1, L2 and L3 carry power. The fourth wire carries
ground. Connect the ground wire to the ground connection
in the controller. Grounding helps to prevent shock hazard if
there is a fault in the motor.
The correct order of the three motor phases is marked on
the motor cables itself. Prior to splicing the order of the
motor phases should be transferred to the cable. This will
simplify the wiring.
CAUTION – No disconnect switches must
be installed in power wires between
motor and pump controller. Connecting
the motor wires to a switched-on
controller may cause irreparable damage
which is excluded from the warranty.
CAUTION – If the pump wires are in the
wrong order, the motor will run in reverse
and may damage the pump. Never let the
pump run dry, not even for the purpose of
checking the direction of rotation.
Check the correct rotation direction after the pump is filled
with water, see chapter "8.4.5.2 Rotary Direction" on page
48.