Orton Sentry Xpress 4.0 User Manual

Single-speed / ramp-hold version
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Single-Speed / Ramp-Hold Version
Sentry Xpress
Digital Temperature Controller
°F
°C
°C Display Dot
Temperature Display
Temperature
display is in °F.
perature display is in °C.
See page 12 for instructions on
selecting °F or °C.
Time Display
: Sepa-
rates hours from minutes. Ex-
ample: Display shown above
is 1 hour and 30 minutes.
IM-221/7-11
Hr./Min.
When Lit
Tem-
SENTRY
M I C R O
START/STOP Key
Starts and stops a firing.
Press after each
programming step. It works like the
Enter key on a computer.
Up Arrow Key
press
. Press
to select Single-Speed or
Ramp-Hold. Pages 6, 8
During a
Ramp-Hold firing, press the
.
will appear. Press
. The current segment ramp
or hold number will appear. To
skip, press
again. Page 8
During a
Ramp-Hold firing, press
repeatedly until
Press
. Each time you press
the
, the hold time for the
current segment will increase by 5
minutes. Then press
Page 8
*These features are new with the Sentry Xpress 4.0. This manual, neverthe-
less, is backward compatible with earlier controllers.
START/
HIGHER
LOWER
STOP
Delay
Skip Seg.
Review
Add Hold
Enter
Change Temp.
4.0
Program
Xpress
T/C Offset
Alarm
P R O C E S S O R
The Sentry Xpress 4.0 micro processor is manufactured by the
Orton Ceramic Foundation and displays the CE mark.
During a Ramp-Hold firing,
press
From
appears. Press
the arrow keys to change the target
temperature for the current seg-
ment. Then press
press
appears. Press
the arrow keys to change the alarm
temperature. Press
lence the alarm, press any key.
Page 9
appears.
At the
.
row keys to adjust the controller to
fire hotter or cooler. Press
.
to return to
Program
Review
Run
°F
When Off
°C
When Lit
TM
Down Arrow Key
gram you have selected
will appear one step at a
time. When
pears, press
repeatedly until
Page 4
. Use
. Page 9
Enter delay time. Press
During a firing,
repeatedly until
. Use
During firing, press
. To si-
entered will appear one
step at a time. Page 4
display, press
will appear. Use ar-
. Page 12
Indicator
Lights
Light is
on during pro-
gramming.
Light is
on during pro-
gram review.
Light
blinks during firing.
From
press
. The pro-
ap-
.
From
press
.
twice. Page 4
. The program you
1

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Summary of Contents for Orton Sentry Xpress 4.0

  • Page 1: Indicator Lights

    5 fire hotter or cooler. Press minutes. Then press to return to . Page 12 Page 8 IM-221/7-11 *These features are new with the Sentry Xpress 4.0. This manual, neverthe- less, is backward compatible with earlier controllers.
  • Page 2: Table Of Contents

    Contents Introduction General Guidelines ....3 Thank you for buying the Sentry Xpress micro proces- sor. We appreciate your business. Time and Temperature Display ....3 Operation Begins from the IdLE Display .
  • Page 3: General Guidelines

    Safety General Guidelines The warranty on your Sentry Xpress controller does not cover damage from overfiring, regardless of the circumstances. Time and Temperature It is the operator’s responsibility to make Displays sure the kiln turns off at the proper time. When the kiln is not in use, disconnect the Center Dot: Time power.
  • Page 4: A Rapid Way To Scroll Numbers

    Scrolling Numbers Rapidly After a power failure, the controller will continue firing provided that: During programming, hold an arrow key down several The kiln temperature is above 212°F / 100°C when the seconds, and numbers will begin to scroll rapidly. Ordi- narily, you would press to raise a number and power comes back on.
  • Page 5: Theory Of Operation

    Theory of Rate Operation Each segment must include a rate, which is degrees of temperature change per hour. The kiln will fire at full power when the rate is 1799°F/999°C. Full power displays as The temperature you are firing to is called the target Note: To enter full power from , press the temperature.
  • Page 6: Temperature Over-Shoot

    Type of Firing Suggested Firing Mode Enameling Single-Speed Single-Speed Programming Silver Clay Single-Speed Instructions Glass Bead Annealing Ramp-Hold Glass Fusing Ramp-Hold Glass Slumping Ramp-Hold Note: Single-Speed firing is all you will ever need if Lost Wax Ramp-Hold you are only going to a temperature and holding. Selecting a Firing Mode From , press...
  • Page 7: Ramp-Hold Mode

    Ramp-Hold Rate Temp. Segment °F/°C °F/°C Hold Mode 500/277 1450/788 00.00 100/55 700/371 00.00 The first segment is the heating segment. The second one is the cooling segment. The controller does not use mi- You can make your own firing programs and store them nus numbers for cooling.
  • Page 8: Ramp-Hold Programming Instructions

    Ramp-Hold Programming Advanced Instructions Features Note: You have up to 8 segments available in Ramp-Hold. If you don’t need all 8, zero out the unused segments. (See step 6 below.) From , press (the left button). Skip Segment works only in Ramp-Hold programs. Add Hold Time, Temperature Edit, and Alarm work in both Press the key (not the...
  • Page 9: Editing The Target Temperature During Firing

    Lost Wax Editing the Target Temperature Burnout While the kiln is firing, you can change the target tem- perature of the current segment. (Ramp-Hold: You can edit only the segment that is firing. So if the first segment is CAUTION: Only kilns with vent holes are designed the current one, you can edit only the first segment.
  • Page 10: Burnout Instructions

    Display Segment 3 lowers temperature to 800°F/426°C, the typi- cal casting temperature for silver. (Most types of gold cast Messages at 900°F / 482°C.) Note: Casting temperature depends on the size of the mold. The temperatures above are only a guide. See your jewelry supply dealer for temperature (Page 9) Ready for you to enter an alarm tempera- recommendations.
  • Page 11: Error Messages

    A temperature rise of 100° in two hours = 50° rate. UNPLUG the kiln or disconnect the power. Re- move the controller. Remove the two thermocouple A temperature drop of 200° in one hour = 200° rate. wires from the back of the controller. (page 6) These Cut a thin paperclip in half.
  • Page 12: High Temperature Deviation

    HtdE / High Temperature tCr / Thermocouple Reversed Deviation This usually means the thermocouple lead wires are re- versed. Check that the thermocouple lead wires are con- Causes: nected to the correct terminals. See your kiln’s wiring di- During a heating-up ramp or a hold, the temperature is agram.
  • Page 13: Trouble Shooter

    Look at the back of the Is the controller receiving power? Test the power IN- PUT connections on the back of the controller with a controller. You will voltmeter. find a set of connector pins near the bottom Controller Power Input Test labeled “C/F.”...
  • Page 14: Controller Display Turns On. No Heat In Kiln

    Output Test Result: No voltage at red and black wires a voltmeter probe to the white wire and the other probe to The controller is not sending power to the relay. Return the orange wire. the controller for repair or replacement. Input Test #2 Result: Less than 20 Volts AC Output Test Result: 10 - 14 v.
  • Page 15: Kiln Overfires

    Index does not blow, the problem is a board or relay. Go to step 2.) Connect the INPUT plug (orange, blue, and white wires) to the board again. Leave off the OUTPUT Add Hold Time ....... . . 8 wire plug (the one with the red and black wires).
  • Page 16: Shorthand Instructions

    Shorthand Instructions These instructions may be confusing until you have read more detailed instructions on Single-Speed, page 6, or Ramp-Hold, page 8. Read the safety guidelines, page 3. After pressing the keys in left column, the center message will appear. Single-Speed Keys to Press Display...

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