Ramp-Hold; Interpreting Cone Bending; When Cone Temperature Is Off More Than 50°F; User Programs - Paragon DTC 1000 Operation & Maintenance Instructions Manual

The following chart contains seven examples of Cone Off-
sets. Program any temperature in the 01 - 50°F/1 - 28°C range,
hotter or cooler, using these examples as a guide:
Cone Offset Examples, °F
0001
0030
0049
0000 or 9000
9005
9040
9049
*Cone Offset works in °C the same as in °F. In the
above examples, replace °F temperatures with
equivalent °C.
Once you enter a Cone Offset number, Cone-Fire will re-
main adjusted to that number for that cone until you change it
again. Keep a written record of Cone Offset adjustments.

Interpreting Cone Bending

The large cone on the kiln shelf should be visible through a
peephole. Avoid exposure to cool air by keeping the cone at
least 3" from the peephole. Program the DTC 1000 for the
cone on the shelf and fire. After cooling, check the cone:
The cone bent to 6 o'clock: In
this case, the controller is matched
to your kiln. The self-supporting
cone illustrated has fired to maturity
when the tip is even with the base as
shown.

Ramp-Hold

Ramp-Hold fires in segments. Each segment has an end temperature, a degrees per hour
rate to reach that temperature, and a hold time. Do NOT use Ramp-Hold until you have read
"Ramp-Hold Basics" and "Ramp-Hold Programming." To take full advantage of other fea-
tures, read "Advanced Ramp-Hold," page 11.
Ramp-Hold Basics

User Programs

When you enter Ramp-Hold mode, the first prompt to ap-
pear is , meaning, "Select a User Program." A User
USEr
Program is a firing schedule stored in memory. It includes
1) number of segments needed
2) rate (how fast temperature changes in degrees per hour)
for each segment
3) target temperature for each segment
4) hold, if any, for each segment
5) alarm temperature, if any.
Kiln will fire 1°F Hotter
Kiln will fire 30°F Hotter
Kiln will fire 49°F Hotter
No Adjustment
Kiln will fire 5°F Cooler
Kiln will fire 40°F Cooler
Kiln will fire 49°F Cooler
The cone did not bend far
enough: Use a 00_ _ Cone Offset
number for a hotter firing. (About
0025 for the cone at right.)
The cone bent too far: Use a 90_ _
Cone Offset for a cooler firing.
(9045 for the over-fired cone at
right. This varies depending on
cone number.)
Do not be overly concerned with achieving an exact 6
o'clock bend. The difference between a 3 o'clock and a 6
o'clock bend is only a few degrees.
When Cone Temperature
Is Off More Than 50°F
Suppose you are firing to cone 017 (1360°F), but the next
hotter cone, 016 (1422°F) bends to 6 o'clock. The kiln is firing
62°F too hot (1422 - 1360 = 62). 62°F is beyond the 50°F maxi-
mum adjustment of Cone Offset.
When thermocouple inaccuracy exceeds 50°F, replace the
thermocouple. If you must fire the kiln before installing the
new thermocouple, combine Thermocouple Offset and Hold
time. Reminder: as a rule of thumb,
One Hour Of Hold = One Cone Of Heat Work
The controller can retain six user programs in memory
even when power to the kiln is turned off.
If using Ramp-Hold for the first time, press 1 when
appears. Your first firing will be stored as User Program #1.
Each time you store another program, select the next avail-
able number, such as 2, at the
firing profiles of your User Programs.
To use a stored program, select the program number at the
prompt. Press ENTER . If there are no changes to the
USEr
program, press STOP .
CPL
controller is ready to fire your selected program. To begin fir-
ing, press ENTER twice. (See "Program Review," page 5, be-
fore firing.)
USEr
prompt. Write down the
USEr
will appear, then . The
IdLE
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