Hi!
Why are you looking for this particular controller? There is a whole new range of efficient controllers of the ROC series....
If you need only this controller, try enquiring ABB. As far as I knoe, Fisher sold off this product technology to them and they are now manufacturing it, maybe under another brand :-)
Vishal
DPR controllers were originally Alfa Laval controllers. Fisher sold them as a Fisher product by agreement. The line was sold off to ABB and controllers might still be available through ABB. Technical support when I needed it came from Alfa Laval, Sweden, in that I called the company directly in sweden for anything that I needed. It is my understanding that this vintage of controller might be obsolete, and has been superceded by other models. Contact Info that might be helpful -