11 Barnstead|Thermolyne • 800-553-0039
Temperature Controller
This controller provides accurate control at one single temperature setting. To set temperature, simply:
a) Turn Power switch ON.
b) While depressing the Push To Set Temperature button, turn the temperature knob until you reach
the desired setpoint temperature as indicated on digital display.
c) Release the Push To Set Temperature button.
The digital display will now indicate the actual chamber temperature. The furnace will heat to the new
setpoint temperature. The CYCLE light will remain on until the furnace temperature is within 1°C of the
setpoint temperature; then the CYCLE light will turn on and off as the controller maintains the setpoint
temperature.
NOTE
If at any time the Temperature Adjustment knob is turned in either direction, the setpoint
will change, even if the Push To Set Temperature button is not depressed. To view the
current setpoint temperature, depress the Push To Set Temperature button.
Sensor Break Protection
This controller provides sensor break protection in the event the thermocouple opens. If an open
thermocouple condition occurs, the digital display will indicate 5 degrees or less and the power to the
heating element will be shut off (CYCLE light will extinguish).
Automatic Models
(F6020C, F6020C-33, F6020C-60, F6028C, F6028C-60)
NOTE
The temperature control in these models is a single set-point device. By using the "UP" or
"DOWN" 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.
Controls and Displays
Power Switch:
Switch power switch to the "ON" position. The CONTROLLER will illuminate when power is on.
Furnace Power Indicator:
The amber furnace power light will illuminate whenever the door is closed. This light will go out only when
the door is open or when there is an over-temperature condition.
Door Safety Switch:
The door safety switch removes power from the heating elements when the door is opened. Open and
close the door a few times, note that the amber furnace power light will go out while the door is open. If
the furnace power light does not go out while the door is open, consult the Troubleshooting section before
proceeding.
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