I've just purchased a brand new Rohde TE 75 MCC with the ZWR 75 extra ring. Got off to a rocky start because the TC 304 controller supplied with it was faulty but now got a replacement.
Two days ago I did the first firing so the kiln was empty (100 C per hour up to 1050C - held for one hour) and not sure about a couple of things:
I've read here:
That a gap between the lid and body is normal at high temperatures but ....
- Should I still expect such a gap on a brand new kiln?
- What is the point having a ventalation pipe if all the fumes will come out of this gap anyway?
My gap was not at the hinge end or by the front clip.
Cool Down Rate
The kiln heated up perfectly according to the programme. After the hour at 1050C it switched off (there are no options on this controller to set the cool down rate). In the first 5ish minutes it cooled 80C. After about 20 minutes it was down some 200C. Is that kind of cool down rate normal?
I've read this:
which seems to suggest a much slower rate but then it could be a different kiln or it could be because my kiln was empty ... ?
Any thoughts would be very helpful.