The following information is provided to help you understand resistance heating systems; to select the right furnace for your application; and to avoid problems and the resulting “furnace down” time once your furnace is in operation. The videos cover the installation and replacement of molydisilicide heating elements. There are separate tutorials for 3/6mm in diameter and 6/12mm in diameter elements because in most cases the element accessories are different for the two sizes. In addition, there is a tutorial for installing 6/12 mm elements in furnaces with slotted roofs.

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Informational Articles / White Papers

Which bench top model is best for you?

Which bench top model is best for you? Our director of Sales, Design, and Engineering prepared this tutorial to help someone unfamiliar with the world of bench top laboratory furnaces decide on the best model for their applications. All three are easy to operate and maintain and have features which facilitate different kinds of thermal […]

Maintaining your production size bottom load furnace

Maintaining your production size bottom load furnace Maintaining your production size bottom load furnace on a regular basis can eliminate or minimize future downtime, not to mention ensure operator safety. Deltech recommends the following: Monthly Inspect the interior of the furnace for cracking and/or pin failures.  Replace pins as needed.  Please contact Deltech if any […]

Production scale top hat furnace maintenance

Production scale top hat furnace maintenance No one wants expensive surprises and unhappy customers!  Help prevent unplanned production downtime by following these guidelines for your Deltech production scale top hat furnace. Every month Inspect the interior of the top hat furnace for cracking and/or pin failures.  Replace pins as needed.  Contact Deltech if any large […]

Lab scale Top Hat furnace maintenance

Lab scale Top Hat furnace maintenance Do you have a bench top size “top hat” model Deltech furnace? If so, you’ll be interested in knowing the recommended maintenance for your furnace. We all know mtaintenance can prevent future problems. In the case of furnaces, it can help minimize future downtime and ensure operator safety, two […]

Planning Your Visit: What you need to know

Planning Your Visit: What you need to know Deltech looks forward to welcoming you to our facility. Safety is our top priority and we want to ensure that our guests remain safe while visiting our facilities. The following Overview and Safety Guidelines will help you prepare for your visit. Visitor Overview All visitors are required […]

About Deltech Water Cooled End Caps

About Deltech water cooled end caps Water cooled end caps allow access to the tube interior without removal of the caps themselves. This is accomplished with the use of flat end plates that can be easily removed. The plates can also be customized with special fittings such as hooks to meet the requirements of your […]

Vertical Tube Installation Instructions

Vertical Tube Installation Instructions   Determine your preferred distance from the top of the furnace to the top of the tube.   Make a pencil mark on the tube at the distance you determined.   With fiber wrap between the tube and the clamp, wrap around and tighten a hose clamp at the pencil mark. […]

What you need to know about furnace installation assistance

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…

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 […]

Why won’t my furnace heat?

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

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 […]

What is a Top Hat furnace? And why would I want one?

What is a Top Hat furnace? And why would I want one? Top Hat vs Bottom Load Furnaces We all know that with the familiar “elevator” furnaces, aka “bottom loaders”, the load platform or kiln car is raised into the furnace body. In the “top hat” design, the opposite occurs. The furnace body is lowered […]

Five Things you Should Know about Controlled Atmosphere Furnaces

  There are many suppliers of vertical and horizontal tube furnaces, but few suppliers of front load, bottom load, and top hat furnaces specially designed for processing in inert atmospheres. To do so, the furnace must be sealed: the element ports, thermocouple ports, and door access. Gas inlets will allow purging in any furnace, but […]

Help avoid “furnace down” crises

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 Element connectors Thermocouples Hearth Plates Heating elements. When I replace the water filter in my refrigerator, I reset a counter that indicates via a light […]

Meltdown! How to Avoid a Furnace Disaster

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 […]

Meltdown! Beware of Manual Mode Operation

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 […]

Introduction to Deltech Furnaces Resistance Heating Systems

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, […]

Why use a transformer?

Control system featuring phase angle fired SCR power controller and isolation type stepdown transformer 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 […]

About Molydisilicide (MoSi2) Heating Elements

Most Deltech furnaces are designed for maximum operating temperatures in the 1500-1800 deg C range and for operation in air, so molydisilicide heating elements are used because of their ability to quickly attain and sustain high temperatures and their affinity for oxidizing atmospheres. Despite their robust appearance they are a fragile, glasslike material with low […]

Five Things You May Not Know About Choosing a Batch Glass Melt Furnace

Corrosion Resistance is essential. The most important characteristic of any batch glass melt furnace is that the lining be able to withstand the highly corrosive fumes frequently generated by glass chemistry at high temperatures. High alumina ceramic for temperatures up to 1700 deg C and cast zirconia for temperatures from 1800 to 2000 deg C […]

Five things to know when buying an industrial furnace

Five things to know when buying an industrial furnace The maximum rated operating temperature of the industrial furnace may not be the sustained operating temperature. For example, an industrial furnace with a maximum use temperature of 1700 deg C might have a recommended continuous use temperature of 1600 deg C. This means that if you […]

Video Tutorials

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