Lorentz PS2-150 Series Manual For Installation And Operation page 42

40 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 the ground connector. The ECDRIVE requires four-con-
ductor (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 below the pcb 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
44.