Power Switch; Cycle Light Shown On The Display; Door Safety Switch - Thermo Scientific 47900 Installation And Operation Manual

Table of Contents

Operation, All Models

Power Switch

Both the ON/OFF power switch and the digital display will illuminate when power is switched ON.

The furnace will begin to heat to its controller's current setpoint. (See the instructions for your type of

controller for information on checking and setting the setpoint.)

The cycle light will illuminate whenever the power is being applied to the heating elements. The cycle

light will turn on and off as the furnace reaches the setpoint.

The door safety switch removes power from the heating elements when the door is opened. Open and

close the door a few times; Note an acoustic click of the switch during opening and closing of the door.

If this condition is not true, consult the Troubleshooting section before proceeding. This check must

be done when the furnace is heating and the cycle light on the display is illuminated.

Benchtop Muffle

To avoid personal injury do not use in the presence of flammable or combustible

chemicals; fire or explosion may result. This device contains components which may

ignite such materials.

Caution: 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.

Always wear safety glasses or a safety shield and high temperature gloves when

loading or unloading the furnace. Long sleeved, fire retardant clothing and a fire

retardant apron is also recommended.

To avoid electrical shock, the door safety switch must be operating properly.

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