Specifications

7 Barnstead |Thermolyne • 800-553-0039
Operation
Single Set Point Temperature Control (Automatic)
This furnace controller consists of a microprocessor based three-mode (Proportional, Integral, Derivative),
single setpoint temperature controller. The controller features programmable overtemperature protection
and thermocouple break protection.
NOTE
The temperature control in these models is a single set-point device. By using the "up" or
"down" push buttons a specific temperature can be chosen. The control will cause the
furnace chamber to heat to the chosen temperature and hold it at this temperature until you
turn off the power switch or select another temperature.
Power Switch:
Switch power switch to the "ON" position. The switch will illuminate when power is on.
FAN:
The fan located in the rear of the control section, will run continuously as long as power is supplied to the
furnace, even when the furnace power switch is OFF. This serves to remove residual heat after the
furnace is turned OFF so the heat does not cause damage to sensitive electronic components.
CAUTION
If the power supply must be disconnected from the furnace at any time be sure the
chamber temperature is 500°C or less before doing so.
Cycle Indicator:
The amber “OP” cycle light will illuminate whenever the power is being applied to the elements.
(See Figure 1, page 4)
Door Safety Switch:
The door safety switch removes power from the heating elements when the door is opened. Open and
close door a few times, note that the amber cycle light will go out while the door is open. If this condition is
not true, consult the trouble shooting section before proceeding.
WARNING
To avoid electrical shock, this furnace must have the door switch operating properly.
Digital Readout:
The Digital Readout continuously displays chamber (upper display) and set point (lower display)
temperatures unless the scroll button is depressed.