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Orton Autofire4000 Installation Manual page 4

Wall-mount controller

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Thermocouple Installation
The thermocouple should be connected to the thermocouple wire that extends
out of the bottom of the push button control panel.
For Single zone controllers, it's recommended that the thermocouple be installed
through a hole in the upper half of the kiln. Check to see if your kiln has a pre-
determined location for a thermocouple. If you choose to install the thermocouple
through the lid of the kiln, this will reduce the life span of the thermocouple.
Metal sheathed thermocouples should not be in direct contact with the metal
shell of the kiln. A peephole may be used as long as Fiber Blanket or other High
Temperature insulating material is packed around the thermocouple for a tight fit.
Drilling a hole may be necessary. Holes should be drilled over-size to allow for
insulating material between the thermocouple and metal kiln wall. If your
thermocouple has a ceramic sheath, a 9/16" hole is recommended.
Refer to the Diagram below for thermocouple placement.
• Inside the kiln - 1 inch or more of the thermocouple should be visible.
• Outside the kiln - the thermocouple connector should be spaced off slightly to
prevent damage from radiant heat.
Use Caution when loading and unloading the kiln. Some thermocouples are
more fragile than others and can be easily damaged if struck by kiln furniture.
10/31/2018

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