by gyro on Tue Nov 30, 2010 12:36 am
I've done it recently about 6 or so times (while citric acid washing it). Drain the boiler - Unscrew the 4 black finger screws on the front cover and remove the 'surrounds'. Be careful when you do this as you will need to disconnect the plug to the LED lights on the back panel. Once thats off, its a little fiddly but quite straightforward to unscrew the boiler drain valve in the photo (circled blue). Remember, as soon as its off, water will flow freely so consider how that will be contained. That drains the boiler. If you want to drain the HXs thats harder. Its very cold in Old Blighty now, so water in the HX lines is a definite threat and one that I hoped you looked into before buying it. In the attached pic, undo the large nut to the left of the blue circle and that will release water from the HX. Do the same on the other HX circuit on the other side (other side more accessible). If you can't manage that, then at least leave the brew lever on the front panel in the 'middle' position. I'm several thousand miles away from the machine, but I recall thinking when i disassembled it that it would at least allow some expansion room/vent to atmosphere if it did start to freeze... ie if water was connected, in that position it will dribble out therefore must at least allow some venting.
Hope this has been of some help. Saw 2 of these in quick succession on UK eBay, hope you got a good deal and its not got a ruptured HX. They look to be built very tough/well.
Cheers, Chris