If somebody stumbles across this, on my model (EC685-BK) there are 3 grounding wires present, additionally connecting the inside to the chassis. The first one is attached to the top and needs to be screwed off. Two others are on the rear. When looking at the water tank, on both sides you’ll find a plastic strip that you can pull upwards and then off. The left one doesn’t matter, but the right one covers both additional grounding connectors, that can be unplugged with tweezers or thin pliers.

Thanks, helpful video.

Does hot/scalding water come in contact with plastic parts within this machine?

Did you press the single or the double shot button?

Do you know what could be causing loud sound when making coffee ( like drrr drrr). Thnx

Hi i need help on my Delonghi la specialista maestro the piece ref AS00006170 is broken do you know how I can remove it I do not want take the risk to break it Thanks for your help