No need to shut the machine down. But if it comes on and provides the noisy beeping, then you can power down. Once down, push head to the right, then left and fill the captops with cleaning solution. Slide head slowly to the right until it locks. May take sever tries, it is lock when it does not go to the left. Check every few days to ensure there is fluid in the tops. To maintain fluid longer, clamp the lines under the tops.