Glass Slumping Firing Schedule; Other Features; The Add Time Key; Delay Fire - Orton Sentry 2.0 Operating Instructions Manual

Stained glass, ", 2 layers, full fuse. The fusing tempera-
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ture will vary depending on the brand of glass, the batch,
and even on the color. Vent the lid. Set the alarm to 500°F.
When the alarm sounds, close the lid from venting position
and insert peephole plugs.
Set the alarm again, this time to 1350°F. When it sounds,
check the glass through the peephole. When the glass fuses
to your satisfaction, write down the temperature and hold
time for future firings, and press , then
ment).
This will advance the kiln to segment 3, a flash cooling
segment. Lift the kiln lid slightly or open the door ajar until
the temperature drops to 1050° F. Then close the door / lid.
The kiln will cool slowly through the annealing range, then
turn off.
Note: A cooling rate of 9999 (FULL) shuts off the
warning alarm (error message) that sometimes
sounds during rapid cooling. This turns off the alarm
only for that particular ramp. The alarm codes still
work on the hold and the other programmed segments.
For details about error messages, see pages 19 - 21.

Glass Slumping Firing Schedule

Rate
Segment °F / °C
1 250 / 138
2 900 / 500
3 9999 / 9999
4 150 / 83
Stained glass, ", 2 fused layers, 12" circular pieces,
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slumped into a bowl. Set the alarm to 500° F. When the
alarm sounds, close the lid from venting position and insert
peephole plugs.
Set the alarm again, this time to 1150° F. When it
sounds, check the glass through the peephole. When the
glass slumps into the bowl, write down the temperature
and hold time for future firings, and press , then
(Skip Segment).
This will advance the kiln to segment 3, a flash cooling
segment. Lift the kiln lid slightly or open the door ajar until
the temperature drops to 1050° F. Then close the door/lid.
The kiln will cool slowly through the annealing range.
Then it will turn off and cool to room temperature.
Note: A cooling rate of 9999 (FULL) shuts off the
warning alarm (error message) that sometimes
sounds during rapid cooling. This turns off the alarm
only for that particular ramp. The alarm codes still
work on the hold and the other programmed segments.
For details about error messages, see pages 19 - 21.
(Skip Seg-
Temp.
°F / °C Hold
750 / 398 00.00
1250 / 676 00.30
1050 / 565 00.00
750 / 398 00.00
Chapter 4

Other Features

The Add Time Key

This key adds 5 minutes to a hold. It is
designed for ceramists who watch witness
cones and for glass artists who inspect the
glass near the end of firing.
During a firing, press .
, and time in
hold, will appear.
Press again. The time
shown will increase by 5
minutes.
To return to the temper-
ature display, press
or wait 1 minute.
Note: Add Time will add
5 minutes to hold even if
no hold had been pro-
grammed. After hold time displays, 5 minutes are
added with each press of the key.

Delay Fire

This delays the start of the firing by the
amount of time entered. Use it to fit a fir-
ing into your schedule or to take advan-
tage of lower electric rates at night. Delay zeroes out after
each firing. Therefore, it must be programmed again for
each firing. The maximum delay is 99 hours and 59 min-
utes.
First, enter the program you are going to fire.
From press . Enter delay time (i.e., 5 ½ hours
= 05.30). Press
To begin Delay, press
Delay count-down timer will appear.
Note: Press
begin the firing. (You could also press
delay and then
CAUTION: For safety, do not leave the kiln alone
during a delay or a firing. We cannot guarantee your
kiln against overfiring even though the controller is au-
tomatic. The operator assumes full responsibility for
shutting the kiln off at the proper time.
With the Add
Time button, you
can add time to a
hold. With the
editing feature,
you can change
both target tem-
perature and
hold.
.
once from
during delay to end the delay and
to end the
to begin the firing.)
. A
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