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Sentry Express Digital Temperature Controller
2
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Products. Service. Know-how.
Contents
General Guidelines .....................................................3
Time and Temperature Display .....................................................3
Operation Begins from the IdLE Display ....................................3
Thermocouple Inspection ..............................................................3
A Rapid Way to Scroll Numbers ....................................................3
Program Review & Repeat Firing ..................................................3
Delay .......................................................................................................3
Power Failures .....................................................................................4
CPLT Message: Firing Completed .................................................4
Thunder Storms and Power Surges .............................................4
Theory of Operation ...................................................4
Rate .........................................................................................................4
Hold.........................................................................................................5
Two Firing Modes: Single Segment and Ramp-Hold ............5
Single Segment Programming Instructions .............................5
Temperature Over-Shoot ................................................................6
Ramp-Hold Mode .......................................................6
Repeat Firings ......................................................................................6
Programming a Cooling Segment ...............................................6
A Ramp-Hold Practice Program ....................................................7
Skipping a Segment in a Ramp-Hold Program .......................7
Ramp-Hold Programming Instructions......................................7
Lost Wax Burnout .......................................................8
Overview ...............................................................................................8
A Sample Program .............................................................................8
Burnout Instructions .........................................................................8
Error Messages............................................................9
bAdP/Bad Programming .................................................................9
EtH/Electronics Too Hot ...................................................................9
FaIL/Thermocouple Failure .............................................................9
TCR/Thermocouple Reversed ........................................................9
FtL/Firing Too Long ...........................................................................9
PF 1/Power Failure .............................................................................9
PF 2/Power Failure .............................................................................9
tC/Thermocouple Failure ................................................................9
Selecting
°
F or
°
C Display ...........................................9
Display Messages .................................................... 10
Trouble Shooter ....................................................... 10
Problem: Controller display is blank. No heat in kiln ......... 10
Problem: Controller display turns on. No heat in kiln ........ 11
Problem: Kiln switch box ½ amp fuses keep blowing ....... 11
Safety
The warranty on your Sentry Xpress controller
does not cover damage from overfiring, regard-
less of the circumstances. It is the operator’s
responsibility to make sure the kiln turns off at
the proper time.
• When the kiln is not in use, disconnect the
power.
• Do not leave the kiln unattended, especially near
the expected shut-off time.
• Wear firing safety glasses when looking into the
firing chamber of a hot kiln.
• Do not touch hot sides of kiln. Keep unsuper-
vised children away.
• Install your kiln at least 12 inches from any wall
or combustible surface.
• Do not open lid or door until kiln has cooled and
all switches are off.
• Fire only in a well-ventilated, covered and pro-
tected area away from combustible materials.
• Keep cordset away from hot sides of kiln or fur-
nace.
• DANGEROUS VOLTAGE! Do not touch heating
elements with anything. Disconnect before ser-
vicing.
©2004, by Paragon Industries, L.P. IM-221/10-04
