Radio.YYZ wrote:
Bluenoser: So five minutes each shot and 4th and fifth get lower in temp? Maybe try increasing pid temp and will have to do some flushes to get the temp balanced out..

I tried that to some extent, but still had some issues.. I think the restrictor is the problem. Not enough flow. And so while I can dial the PID higher (it is already about 4 degrees higher than most run it), I think I'll still run into the problem that the restrictor is just not allowing enough hot water flow to keep up with the demand of shots every 2-3 minutes.. I'd have to spend some time determining the ideal wait time between shots for a full recovery. I suspect it might be as high as 5-10 minutes.

i replied to this in the wrong thread, see reply here:

Low Temperature on New HX Espresso Machine