Sentry Industries Sentry Xpress 4.0 - Manual (Page 6)

6 Single-Speed/Ramp-Hold
Ramp-Hold programs in memory. Programs are numbered
Pro1 - Pro4.
Type of Firing Suggested Firing Mode
Enameling Single-Speed
Silver Clay Single-Speed
Glass Bead Annealing Ramp-Hold
Glass Fusing Ramp-Hold
Glass Slumping Ramp-Hold
Lost Wax Ramp-Hold
Selecting a Firing Mode
From display, press once.
Press the key several times. You will see
the following display messages:
SPd1:
Single-Speed 1 / 200°F/111°C rate per hour
SPd2:
Single-Speed 2 / 500°F/277°C rate per hour
SPd3:
Single-Speed 3 / 1000°F/555°C rate per hour
SPd4:
Single-Speed 4 / 1500°F/833°C rate per hour
SPd5:
Single-Speed 5 / Maximum rate
PrO1:
Ramp-Hold, Program 1
PrO2:
Ramp-Hold, Program 2
PrO3:
Ramp-Hold, Program 3
PrO4:
Ramp-Hold, Program 4
Note: Your controller may have more Ramp-Hold pro-
grams than the 4 shown above.
To select a firing mode, see the boxed programming in-
structions on this page and page 8. Or to get back to
, press several times until ap-
pears.
Temperature Over-Shoot
When a kiln is heated too fast, it may over-shoot the tar-
get temperature, especially in small kilns at lower tempera-
tures. To avoid this, add an extra segment in a Ramp-Hold
program to slow the firing. (See the next section.) The seg-
ment with the slower rate should begin approximately 40° -
60° below the target temperature.
Single-Speed Programming
Instructions
Note: Single-Speed firing is all you will ever need if
you are only going to a temperature and holding.
From , press .
Use the key (not the ) to
select a firing rate (temperature rise per hour)
from 1 through 5. (Ignore - .)
/ (200°F or 111°C)
/ (500°F or 277°C)
/ (1000°F or 555°C)
/ (1500°F or 833°C)
/ (Full Power)
Then press .
or and the target temperature
from the last firing will appear. Use the arrow
keys to change the target temperature. Then
press .
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 . (No hold = 00.00)
will appear. Press to begin firing.
will appear, the Run indicator light will
begin blinking, and the kiln will begin firing.
To stop a firing before completion, press
. will appear, alternating with total
firing time and kiln temperature.
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
above) is a pre-programmed speed. The kiln’s ac-
tual 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 follow-
ing:
■ Firing time
■ Present temperature
■ = Fired to completion
To return to , press .