AutoFire® Kiln Controller User’s Guide
25
The flow diagram below shows how the software decides whether to restart kiln after a power interruption. If the firing
was near completion or the temperature fell too much during the outage, then the firing will terminate.
Power Interruption Recovery
Controller
Automatically Stops
the Firing
Controller
Automatically Stops
the Firing
Is Elapsed Time of
Power Failure less
than 60 minutes?
No
Yes
Was
Temperature
Before Power Failure
Within 100°F of Final
Temperature and Was Final
Segment Ramp Rate
108°F/hr (60°C/hr)?
Has Temperature
Dropped More
Than 255°F?
Has Temperature
Dropped More
Than 100°F?
Yes
No Yes
Resume the Firing
Establish a New Set Point
from the Current Kiln Temperature
Yes
No No
Is the Controller to
Resume a Ramp?
Controller
Automatically Resumes
Ramp Rate (see
Entering a Ramp Rate)
Yes
No
The Controller Resumes a Dwell,
The Ramp Dwell Time is not Advanced
During Recovery Ramp.
(see Entering a Ramp Rate)
Yes
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