Jura Ena 7 Aroma + (13760) - Spring leftover

Hi. I'm an amateur/hobbyist repair man, and I started repairing a Jura Ena 7 Aroma + (code under the frame is 13760). I've dismantled it, cleaned it, and almost reassembled it. But I find myself with a spring which I don't know where should go: its outer diameter is about 9mm and the lenght is 15mm, which is fairly big between all the springs in this machine. The most close to it, is the one in the drainage valve, which is there though. I can't think of any other places. Can you guys help me? I dismantled everything but the grinder, which I partly dismantled (till there are the 3 springs and balls). I've checked every part for Jura Ena on some websites, and I can't find a similar spring.