Wilo WROX Operating Instructions Manual page 7

The position of the termin box can be changed a quarter turn by
removing the motor attachment screws (if necessary, remove the
coupling guards) and turning the motor to desired position.
Refit the attachment screws of the motor and the coupling
guards.
If necessary, cut an opening in the terminal box, fit the cable gland
stuffing box and connect the motor as shown by the diagram inside
the cover of the terminal box (or see figure 4).Do not forget the
connection to earth.
A connection error would damage the motor. The power cable
must never touch the pipe or the pump; make sure that it is
sheltered form any humidity.
DO NOT FORGET TO CONNECT TO EARTH.
6. STARTING UP
6.1 PRIOR CLEANING
An hydraulic test is carried out for each pump in our factory.
If some water stays inside them. It is recommended for hygien
reasons to clean the pump before using it with potable water
supply.
6.2 FILLING - DEGASSING
!
Never operate the pump dry, even briefly.
WROX Pump IOM | 7