What you need to know about furnace installation assistance If you purchase a Deltech production scale furnace or a Deltech specialty furnace (such as one of our 2000 degrees celsius models), on site installation assistance is normally included. To get maximum benefit from the site visit from Deltech technicians/engineers and avoid additional charges, you should …
Important information about rebuild roof and hearth parts… You will find upon receiving your spare parts order for roof or hearth pieces, that in many cases the holes have not been drilled for your elements, support tubes, thermocouples, etc. This is due to the alignment problems that can occur from having your spare parts drilled …
Prevent element damage due to arcing If your Deltech furnace is a high temperature (1500 degrees centigrade or above) model, it will likely feature molydisilicide heating elements. Regardless of the kind of connectors in use; i.e. holders and braids or buss bars, repeated thermal cycling can and will result in those connections loosening up. That creates …
Why won’t my furnace heat? If your furnace isn’t heating at all, start here: Go to the control cabinet and turn the control power and the element power off. Then turn first the control power and then the element power back on. You should hear a “clunk”. That’s the contactor (image right) allowing power to …
Five Things you should know about Furnace Startup Control Parameters. Deltech is responsible for the initial configuration of your temperature and limit controllers prior to the shipment of your furnace system. This includes setting the thermocouple type, temperature scale, upper and lower temperature limits, PID values, and events. Should you wish to verify or change …
Tips on avoiding furnace down crises and the often related expenses… The first is keep a few spares for critical consumable components on hand. What are these “critical consumables”? Heating elements When I replace the water filter in my refrigerator, I reset a counter that indicates via a light that so many gallons have …
Meltdown! How to avoid a furnace disaster by using the safety features of the furnace system No one wants to hear “furnace” and “disaster” in the same sentence. Your new Deltech furnace control system was supplied with a limit controller to help you avoid one kind of catastrophe. A limit controller is a relatively inexpensive …
Dangers of manual mode furnace operation… Your high temperature lab furnace system was supplied with a programmable temperature controller which allows you to input numerous programs with various segments such as “ramp”, “soak”, and “repeat”. You can then, for example, select program #1 for product #1 and walk away, free of the need to monitor …
Following is a brief introduction to how the main components of a Deltech Furnaces resistance heating system work together. The main components are the (1) control system, including the temperature controller and control thermocouple; power control system (including SCR power controller, current transformer, and ammeter); transformer; and overtemperature protection circuit (including a limit controller, contactor, …
We’ve been asked why we control the power to molydisilicide heating elements using not only a phase angle fired SCR power controller, but also an isolation type stepdown transformer. After all, the SCR will do a good job of regulating the volts and amps required to fire the load, and the transformer is an …