How do I clean the drain pump if it becomes blocked?

First, turn off the tap, switch off the appliance, and pull out the mains plug. Open and remove the service flap, take the drain hose out of its retainer, remove the sealing cap, and pour the water into a suitable container. Then carefully unscrew the pump cover, clean the interior, pump-cover thread, and pump housing, ensuring the impeller can rotate freely, before reassembling and replacing the service flap. (Page 29)