options allow you to make adjustments to the firing program without
stopping the firing. The available options follow.
Skip Step
During an active heating, cooling or hold time, it is possible to skip ahead to
the next program step. Press the Increase/Option button to display the Skip
Step prompt
SStP
. Then Press the Program button to display the current
ramp or hold segment. Press the Program button again to initiate the Skip
and the controller display returns to the normal firing mode. If the
Decrease/Review button is pressed, the Skip function is canceled and the
controller display returns to the normal firing mode.
The Skip function can be used to end a Hold time early or to skip from any
heating/cooling step to the next heating/cooling step. The Skip function does
nothing during the final program step. To end a final program step, simply
press Stop.
Add Hold Time
During an active heating, cooling or hold time, it is possible to permanently
add more Hold time to the current program step. Press the Increase/Option
button until the Hold Time prompt
HLdt
is displayed. Then Press the
Program button to display the current hold time. Press the Increase/Option
button to add 5 minute increments to the original Hold time. Then press the
Program button to return to the normal firing mode. If the Decrease/Review
button is pressed while the
HLdt
prompt is displayed, the controller display
returns to the normal firing mode.
Change Heating/Cooling Temperature
During an active heating, cooling or hold time, it is possible to make
permanent changes to the heating or cooling temperature of the current
program step. Press the Increase/Option button until the Change
Temperature prompt
CHGt
is displayed. Then press the Program button to
display the current temperature setting. Adjust the temperature setting with
the Increase or Decrease buttons. Then press the Program button to return
to the normal firing mode. If the Decrease/Review button is pressed while the
CHGt
prompt is displayed, the controller display returns to the normal firing
mode.
Threshold Alarm
During The firing, it is possible to set an audible alarm and display alarm for
when the actual temperature reaches a specified value. The buzzer will sound
and the display will show the alarm code
ALAr.
To set the alarm, Press Increase/Option button during the active firing until the
alarm prompt
ALAr
is displayed. Then Press the Program button to display the
current alarm temperature setting. Adjust the temperature setting with the Increase
or Decrease buttons. Then press the Program button to return to the normal firing
mode. If the Decrease/Review button is pressed while the
ALAr
prompt is
displayed, the controller display returns to the normal firing mode.
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The alarm is disabled (turned off) when the alarm value is set to 32°F (0ºC).
The alarm value can be reset or changed many times during a single firing.
To silence an active alarm, simply press any button. The maximum
programmable value for the alarm is 2400ºF (1316ºC). If the controller does
not allow you to program alarm temperatures up to 2400°F/1316°C, it has
been factory set by the supplier to a lower safety temperature. This is often
necessary to limit the controller to the maximum operating temperature of the
system.
Flow Diagram for Options Menu
Power Fail Recovery
A firing will resume after a power interruption if certain conditions are met.
1.
The controller was not performing a cooling step and the
cooling temperature was not exceeded. If so, the display will
show the alarm code
PF 1
and terminate the firing.
2.
When power is restored the actual temperature must be above
212ºF (100ºC). If not, the display will show the alarm code
PF 2
and
terminate the firing.
3.
When power is restored, the temperature drop during the power
interruption must be less than 72ºF (40ºC). If not, the display
will show the alarm code
PF 3
and terminate the firing.
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