Hold
Hold maintains a steady temperature for the length of
time you specify. You can use Hold in both heating up or
cooling down segments.
When Hold is set to 99.59 hours, the controller will
remain at that temperature indefinitely, until you press
STOP
. To enter 99.59 hour Hold, press the
Down Arrow
once from 00.00 during programming.
Note:
During firing, the display shows Hold temperature
and time left in Hold.
Two Firing Modes: Single
Segment and Ramp-Hold
To give you greater flexibility, your controller has two
firing modes:
Single Segment Mode (see next column)
Often times, all you will need is one segment that
includes rate (temperature change per hour), a target
temperature, and (if needed) hold time.
In Single Segment mode, you can choose one of five
firing speeds. Then enter the temperature you are firing
to.
Ramp-Hold Mold (see page 7)
Ramp-Hold mode offers much greater flexibility than
Single Segment mode. Use Ramp-Hold to create a cus-
tom firings with up to 8 segments. The controller can
store 4 Ramp-Hold programs in memory. Programs are
numbered 1 - 4.
Type of Firing
Suggested Firing Mode
Enameling
Single Segment
Silver Clay
Single Segment
Glass Bead Annealing Ramp-Hold
Glass Fusing
Ramp-Hold
Glass Slumping
Ramp-Hold
Lost Wax
Ramp-Hold
How to Select a Firing Mode
1. From
IdLE
display, press
START/STOP
once.
2. Press the
Up Arrow
key several times. You will see
the following display messages:
SPd1:
Single Segment 1 / 200°F/111°C rate per hour
SPd2:
Single Segment 2 / 500°F/277°C rate per hour
SPd3:
Single Segment 3 / 1000°F/555°C rate per hour
(List continues on next page.)
Single Segment Programming Instructions
Note:
Single Segment firing is all you will ever need
if you are only going to a temperature and holding.
1.
From
IdLE
, press
START
.
2.
Use the
Up Arrow
key (not the
Down Arrow
)
to select a firing rate (temperature rise pre
hour) from 1 through 5.
SPd1
/ (200°F or 111°C)
SPd2
/ (500°F or 277°C)
SPd3
/ (1000°F or 555°C)
SPd4
/ (1500°F or 833°C)
SPd5
/ (Full Power)
Then press
START
.
3. °F
or
°C
and the target temperature from
the last firing will appear. Use the arrow keys
to change the target temperature. Then press
START
.
4. HLd
and the hold time from the last firing will
appear (e.g. 1 hour, 10 minutes = 01.10). Use
the arrow keys to change the hold time. Then
press
START
.
5. Strt
will appear. Press
START
to begin firing.
-On-
will appear, the Run indicator light will
begin blinking, and the kiln will begin firing.
To stop a firing before completion, press
START/
STOP
.
StOP
will appear, alternating with kiln tem-
perature and total firing time.
Note:
Do not be concerned if your kiln makes a
clicking sound during firing. Kilns use relays to
power the elements. The relays click each time their
electrical contacts come together.
Note:
The firing speed you select (see step 2) is a
pre-programmed speed. The kiln’s actual firing
speed may be less, depending on the kiln model,
available voltage, and density of the load you are
firing.
When the kiln fires to completion, the controller
will beep for 30 seconds. The display will show the
following:
Firing time
Present temperature
CPLt
= Fired to completion
To return to
IdLE
, press
START.
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5
Sentry Express Digital Temperature Controller
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