Wear assembly for a helically formed, metal decanter screw conveyor

A method of installing a wear assembly on a helically formed, metal screw conveyor for a decanter centrifuge, the assembly comprising:

• a wear plate defining a wear plate front surface and a wear plate rear surface, the wear plate rear surface defining a wear plate top edge, a wear plate bottom edge and two oppositely located wear plate side edges interconnecting the wear plate top edge and the wear plate bottom edge, the wear plate rear surface further defining a longitudinal direction extending from the bottom edge to the top edge, the wear plate defining wear plate connection surfaces extending substantially in the longitudinal direction on the wear plate rear surface and a wear plate abutment surface extending substantially parallel with the wear plate top edge on the wear plate rear surface, and
• a backing plate defining a backing plate front surface and a backing plate rear surface, the backing plate rear surface being attachable to the helically formed, metal screw conveyor, the backing plate defining backing plate connection surfaces on the backing plate front surface, the backing plate further defining a backing plate abutment surface on the backing plate front surface,
• the method comprising performing the steps of:
• engaging the backing plate connection surfaces with the wear plate connection surfaces, and,
• contacting the backing plate abutment surface with the wear plate abutment surface.