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.................................................a program number
.................................................CLA2
................................................ STRT
................................................. DELA / 00.00
..................................................-ON-
Cone-Fire – How it works
When firing to a cone number, the controller constantly monitors the actual heating rate of the kiln. If the kiln
does not fire as rapidly as programmed, the controller re-calculates and adjusts the top firing temperature to
compensate for the slower firing rate. This process more accurately fires to the cone number selected. When the
heating rate slows, cones deform at slightly lower temperatures. At faster heating rates, cones deform at slightly
higher temperatures. This ability to recalculate and to fire to a cone value is a unique, patented feature of all Orton
controllers.
Orton Controllers contain three preset program groups for firing to a cone number – Low Fire, Mid Fire, and High
Fire. Each of the programs can be adjusted for speed, hold time and cooling rate. The standard programs are
designed to fire normal loads of thin ware ceramics. When a kiln is more heavily loaded or when thick ware is
fired, additional firing time is needed. Experiment to determine the best firing conditions. The preset firing
programs in the controller are:
Program
Product Fired
Low Fire
Decal, Luster, China
Mid Fire
Glaze, Bisque, Earthenware
High Fire
Stoneware, Porcelain
LO FIRE PROGRAM
0
100
200
TIME
AF4X Kiln Controller
Cone Range
Cones 022 – 011
Cones 010 - 01
Cones 1 – 10
MID FIRE PROGRAM
0
200
400
TIME
23
Firing Time
3 - 5 hours
6 - 8 hours
9 - 11 hours
HI FIRE PROGRAM
0
200
400
T IME
600
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