How do I properly disconnect and store the Karcher K5 pressure washer after use?

Ensure there is no remaining water or pressure in the system: release the lever of the trigger gun, turn off the tap, operate it for about 30 seconds with the lever pushed to clear any residual water. Detach the appliance from the water supply and high-pressure hose, then turn off using the '0/OFF' switch (Page 10).