Hi and welcome. First I need to declare that i know absolutely nothing about your Delonghi coffee machine. However, I feel eminently qualified to give you the folllowing advice. 50 degrees is TOTALLY UNACCEPTABLE. Having noted that however it is necessary to mention that unless this has been measured in some kind of standard way with a thermometer of known calibration - and NOT with a milk thermometer because these can be totally inaccurate - then the figure you have given may not be entirely accurate. Note also that many individuals differ in their opinions of what constitutes tepid or hot. Not trying to be unhelpful, just being honest. So it is necessary to have an accurate temperature reading. OK : Many manufacturers importers have a telephone number for customer advice. Take a good look around your machine and see if there is a sticker with such a number. If there is, call them. If your machine only has an automatic milk frother, the above advice is critical, because they will be able to explain if there is a way of managing the output milk temperature (or....read the owner booklet). If the machine has the option of using a steam pipe to froth (texture) milk in the traditional way, my advice would be to forget the auto frother and only use the steam pipe to froth milk. The longer you froth the milk using a steam pipe, the hotter it wll get, and if you go too far / too long it will scald/burn/boil the milk. If the machine ONLY has an auto frother, and the delonghi agents advise you there is no way of regulating output milk temperature on your model, then I would venture to advise that you should return the machine as being not fit for purpose, and look for something else that will produce milk coffee at the required temperature. As a guide, under normal conditions on the east coast of Australia, the right temperature range for textured (frothed) milk to add to your espresso coffee base to make capp/latte etc., is between 65 and 75 degrees centigrade, where 65 degrees is considered luke warm, and anything above 75 will burn the milk and destroy creaminess and nudging 80 will burn your mouth. This is the way its done in traditional coffee making. Automatic machines have in the past, been well known for producing "tepid" (black) coffee and frothed millk, however the better brands have put a lot of work into fixing that in recent years. This means, there are autos out there that produce milk coffee at a much more acceptable temperature, and as a general rule I would be inclined to spend more rather than less on higher end models. I would say...stay away from cheap end automatics. Hope that helps.
