Bunn-O-Matic Corporation
27
grammed into this setting, which is plus 1 and minus 4. This means the valve will turn off above 31 and will not come
back on until it drops below 26.
The actual setting the processor uses is 3 times what the user has set in the menu. For instance: if the setting is at
10, then the system will turn the refrigerant valve off at 30 plus 1 (hysteresis) and will not come back on until below
the minus 4 hysteresis from 30.
The new software brings approximately 3% reduction in energy usage by looking at both barrels instead of each
barrel independently. The new software looks at both barrels to determine when to turn on. If one barrel reaches the
minus 4 thickness setting which requires the refrigeration system to turn on, the control board will look at the second
barrel thickness number and will turn on the barrel to refrigerate if the number is equal or below the barrel thickness
setting before it actually passes the maximum number of minus 4 to activate barrel cooling process. By changing the
operation, the attempt is to reduce the cycling of the compressor which will reduce energy consumption.
Temperature Sensing System
The Ultra uses a thermistor to monitor the actual temperature
of each cooling drum. Night and Chill modes maintain 35º F,
instead of the torque sensing board (product thickness).
Torque Sensing
The torque springs within the auger shaft assembly will ex depending upon
the amount of torque applied to the torsion springs by the cooling of the product
which creates ice crystals. The ice crystals size relates to the size of the
gap created between the two pins (auger motor pin & auger shaft pin) .The “thickness” adjustment menu ranges from
1- 16 which sets the target gap between the pins.
Note: Product with high sugar content above 12 brix or alcohol will be a factor in longer freeze times. The product will
need to go much lower than 32º F. before it may or may not form ice crystals.
SHAFT
SET THICKNESS ?
NO YES
LEFT 9
RIGHT 5
SET THICKNESS ?
NO YES
LEFT 9
RIGHT 5
SHAFT
SHAFT
SET THICKNESS ?
NO YES
LEFT 9
RIGHT 5
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