User manual

ProCal Operating Instructions
(Affects all User Firing Programs with a Hold
Temperature ABOVE 800°C)
1.
Main Menu
Run Program
Change Program
>Special Functions
2.
Special Functions
Select Language
Cal Low Fusing
> Cal High Fusing
3.
High OverFire?
>Yes
4.
High Temp Adjustment
>0C
(0C – 50C)
Navigate to screen #3 above. If you want to register an
Over-firing correction, simply press the Selector Knob
OR press the Next button. If you want to register an
Under-firing correction, first roll the Selector Knob until
the answer to the question “High Overfire?” displays “No”
(meaning its not Over-firing, its Under-firing), then press
the Selector Knob OR press the Next button to get to
screen #4 above.
Enter the difference between what the Furnace Display
said during the Quick Check and what the Instrument box
Display said at the same time. Then press the Selector
Knob OR press the Next button to record the correction.
Example: Lets say the furnace Target Temperature was
set to 1000°C. When stabilized, the furnace Displayed
1000°C, and the Instrument Box Display shows 998°C.
The Instrument Box is always the reference point, not
the furnace. So, the furnace is running two degrees
HIGHER than the Instrument Box, in other words, the
furnace is OVERFIRING by two degrees. You would
answer “Yes” to the “High Overfire?” question in screen
#3 above (Yes is the default already displayed) by pressing
the Selector Knob OR pressing the Next button, and
then in screen #4 above you would roll the Selector Knob
until the adjustment value “2C” displays, then press the
Selector Knob OR press the Next button to record the
correction.
Remember, this correction will affect all programs with
Hold Temperatures above 800°C.
Furnace Display Instrument Box Display
850°C 849°C
1000°C 1000°C
1150°C 1149°C
As you can see from the table above, using the High
Fusing Adjustment in this instance would fix the 1000°C
Overfire concern, but it would also produce an undesired
Under-firing situation in the ranges above (1150°C) and
below (850°C).
You can still address a deviation from nominal in a
single range by going into each program that has a
Hold Temperature in that range and use the Program
Level Fusing Adjustment.
How To Enter An Overfire Correction Using The
Special Functions High Fusing Adjust
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16911_ProCal_Manual.indd 5 7/7/10 4:06 PM