Skutt Zone Control Kiln - Manual (Page 3)

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ADDENDUM
KM OPERATING MANUAL
0.2.1 REV 9/18/00 0.2.1 REV 9/18/00 0.2.1 REV 9/18/00 0.2.1 REV 9/18/00 0.2.1 REV 9/18/00
ZONE CONTROL CONTINUED
tC 1, tC 2, tC 3
With a Zone Control controller you can monitor the temperature in each zone of the kiln.
The default setting for the thermocouple reading is tC 2 (thermocouple 2). This is the tempera-
ture of the center zone. If you would like to view what the temperature is in tC 1, the top zone or
tC 3 , the bottom zone, simply press the corresponding number on the touchpad. The tempera-
ture reading will display that zone until you enter the number of another zone.
THERMOCOUPLE OFFSETS
It is possible to make individual sections of the kiln fire hotter or cooler by using this feature.
The maximum offset that can be used is 50 degrees. This feature can be used to fine tune the kiln
using pyrometric cones on shelves in the various sections.
In most cases it is not necessary to offset the thermocouples and if done wrong it can cause
firing problems which are difficult to diagnose. Please contact the factory to attain instructions
for this feature.
SETTING SINGLE ZONE AND 3 ZONE CONTROL
As mentioned earlier there are times when you may want to operate the kiln without the 3
Zone Control feature. When elements begin to weaken the kiln may lose the ability to complete
a firing in the 3 zone control mode or extend firing times beyond acceptable limits. This will
happen when the kiln lacks the power to maintain minimum temperature rate increases when 1
or 2 of the sections cycle off to allow a slower section to catch up with the program. This will
express itself as an Err1 error if the kiln is unable to maintain a temperature rate increase of at
least 12° an hour and the controller will stop the program.
If your firing does not require the tight temperature control of zone control and adjusting the
lag will not solve the problem the second option is to turn Zone Control off completely and have
the kiln cycle all sections together using the input of only the center thermocouple.
This is only a temporary solution. We suggest that you find the root source of the prob-
lem which will most likely be the need for new elements..
Turn Zone Control Off
PRESS “F/C”
PRESS “8”
PRESS “1”
PRESS “1” (1 Zone)
PRESS “ENTER
Turn Zone Control On
PRESS “F/C”
PRESS “8”
PRESS “1”
PRESS “3” (3 Zones)
PRESS “ENTER
2 Zone Control may also be selected for 2 section kilns with 2 thermocouples.
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