Watson-Marlow 520DuN IP66/NEMA 4X User Manual
19
If the mains power cable is inappropriate for your installation, it can be changed.
This operation can be carried out with the 520N module in place, or after it has been
removed, as shown here for clarity.
Ensure that the pump is isolated from the mains power.
Remove the six screws from the interface card cover underneath the pump. Lift
off the interface card cover. You may find it convenient to remove the cover
completely; if so, remove the cover earth lead.
Undo the terminal block connectors. Remove the restraining clip by sliding its
jaws sideways in opposite directions.
Loosen the cable gland using a 19mm wrench and remove the gland and the
cable.
Thread a replacement cable through the three parts of the gland, the pump
case and the restraining clip. Connect the new cable to the block connectors,
following the drawing above.
Tighten the restraining clip, and the gland to 2.5Nm. Check that the card cover
earth link is secure. Replace the card cover, checking that the earth wire is not
pinched beneath the cover lip. Take care that the sealing strip is properly seat-
ed to ensure a seal.
