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Introduction
Intended Use
The FB1300 Model and FB1400 Model fur-
naces are general purpose laboratory and heat
treating furnaces. For optimum element life,
observe the following temperature ranges:
100°C (212°F) to 982°C (1800°F) for continuous
use, or from 982°C (1800°F) to 1100°C
(2012°F) for intermittent use. Continuous use is
operating the furnace for more than three
straight hours, and intermittent use is operating
the furnace for less than three hours.
The unit consists of a heating chamber and a
digital controller. See Figure 1 for the overall
shape and general features of the unit.
General Usage
Do not use this product for anything other than
its intended usage.
Principles of Operation
The furnace chamber is heated by a single
three section resistant heater which is embed-
ded in a refractory material. The chamber is
insulated with a ceramic fiber insulation. The
temperature is controlled by an electronic con-
trol. The temperature is measured by a thermo-
couple and is registered on a digital display. For
safety, door switches are incorporated to
remove power from the heating elements when
the door is opened. The furnace is supported by
the control section which also houses the elec-
trical connections.
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