10
CAUTION
For supply connections, use 10 AWG or larger wires suitable for at least 90°C. Failure to
observe this caution could result in damage to furnace.
Observe these two warnings before operating your furnace:
WARNING
Do not use in the presence of flammable or combustible materials; fire or explosion may
result. This device contains components which may ignite such material.
“Caution: Hot Surface. Avoid Contact.” To avoid burns, this furnace must not be touched on
the exterior or interior surfaces during use or for a period of time after use.
Basic Automatic Temperature Control Operation
(F6010, F6010-33, F6018)
Power Switch
The On/OFF power switch will illuminate when power is turned ON. Also, the digital display will illuminate.
Cycle Light
The amber cycle light will illuminate whenever the power is being applied to the heating elements. The
cycle light will turn on and off as furnace reaches setpoint.
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 CYCLE light will be out when door is open. This check
must be done when furnace is heating or when cycle light is illuminated. If this condition is not true,
consult the Troubleshooting 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 temperature unless the Push To Set Temperature
button is depressed. Then setpoint temperature is displayed.
Push To Set Temperature Button
When this button is depressed, the digital display will indicate setpoint temperature. When the button is
released, the actual chamber temperature is displayed.
Temperature Adjustment Knob
Turning this knob clockwise will increase setpoint temperature. Turning the knob counterclockwise will
decrease temperature.
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