The site should have more readily access to the information you require, as I am limited in what I can do from here in Brussels.
That said, I've had a look at the conditions with which we tried the spray dryer back at the end of September last year. First of all, most of the time we stayed at a temperature at the inlet of the spray dryer below 500 °C (while the normal SP is 550 °C). Certainly, it was never tried for any sustained amount of time. But when we did, we can see the temperature of the cooling oil of the atomiser rising sharply. Usually, the trial would stop before the alarm would trigger, but I can find at least one instance in which the temperature at the inlet of the spray dryer was at 550 °C for half an hour, and the temperature of the oil of the atomiser did reach 100 °C (see attached trend).
Looking at our trials this past week, when we maintain the temperature at the inlet of the spray dryer at 350 °C, the temperature of the atomiser is stable, if quite high already (~ 95 °C). As soon as we increase the temperature in the spray dryer to 550 °C, the temperature of the oil increases rapidly to above 100 °C (see attached trends).
Current consumption in the atomiser is around 20 A, and seems to increase to 25 A when the temperature increases, and fluctuates quite a bit.
Ambient temperature is around 30 °C, for what I can tell from the temperatures when the spray dryer is not running, which is similar to what we had back in September last time.