I've attached both the Refrigerated Dryer brochure and the D-series manual to our D18IN page as PDF downloads. You will find them under the Specs tab, to the right side of the page.
The D-IN and D-IT hi-temp dryers are non-cycling. Ingersoll's cycling dryers are D-EC and NVC.
The Ingersoll Rand Factory Warranty covers defects in materials & workmanship for 1 year.
You can click this Service Center Locator Link or use the one at the bottom of our web site. It will take you to Ingersoll Rand where you can enter your zip code to see service providers in your area.
You would need to check with Ingersoll Rand directly about parts availability and what makes up the control modules of their units. Their toll-free tech support line is 800-483-4981.