Instruction manual

The next diagram, below, shows three rates. A rate of
1000° will reach 1000° in 1 hour. A rate of 500° will reach
1000° in 2 hours. A rate of 333° will reach 1000° in 3 hours.
A segment, which is a target temperature and a rate of
heating to reach that temperature, can also have a hold. Hold
means maintaining the target temperature for a length of
time. (See next diagram.)
Firing to a temperature at a single rate would need only
one segment. Reasons to add more segments:
I
To have more than one heating rate
I
To add a hold somewhere below the shut-off tempera
-
ture (see Segment 1 in diagram below)
I
To control the cooling rate.
The diagram below shows a 3 segment firing. The first
two segments were used on the way up in temperature. The
last segment was added for controlled cooling.
4 /
A 3 segment firing. Segments 1 and 2 include a Hold. Segment 3 controls
cooling rate.
Power Failures
After a power failure, the controller will continue firing
provided that:
I
The kiln temperature is above 212°F/100°C when the
power comes back on.
I
The temperature dropped no more than 180°F/100°C
while the power was off.
Power Failure Messages
PF 1 The power failed during firing, and temperature
dropped more than 180°F/100°C.
PF 2 The power failed during firing, and kiln tempera
-
ture was below 212°F/100°C when the power came back on.
Thunder Storms and Power Surges
Unplug the kiln or disconnect the power when the kiln is
not in use, especially during thunder storms and in areas
with frequent power surges. If the kiln is part way through a
firing when a storm begins, it is probably okay to continue
the firing. Do not leave the kiln unattended.
Starting a Firing in a Hot Kiln
After a temporary power failure, or when the kiln has shut
off too soon, it may be necessary to turn the kiln back on.
After you press START, the controller will begin firing
from the current temperature to the target temperature. In
Ramp-Hold, the firing will begin from the first segment that
encompasses the current temperature.
Note: If the kiln is already hotter than the pro-
grammed target temperature when you begin fir-
ing, CPLt will flash.
Segments
If you are using Cone-Fire mode only, skip to page 7.
Definition of a Segment
A segment is the most basic part of a firing. A segment in
-
cludes a target temperature and a heating rate to reach that
temperature. Shown below is a segment with a target tem
-
perature of 750°.
Firing rate is figured in degrees of temperature per hour.
Since the temperature in the chart below takes two hours to
reach 750°, the rate is 750 ÷2 = 375° per hour.
Rate is degrees per hour. This diagram shows 3 rates.
A single segment with a one hour hold.
A single segment with a rate of 375°.