How do I clean the drain pump on the WVG30460ME?

First turn off the tap and switch off and unplug the appliance, then open and remove the service flap. Remove the drain hose from its retainer, remove the sealing cap to drain residual water into a container, then carefully unscrew the pump cover — noting that residual water may leak out. Clean the interior, pump-cover thread, and pump housing, ensuring the impeller can rotate freely, then refit and tighten the pump cover with the handle in a vertical position. (Page 29)