Blodgett DFG-200 manual Programming Procedure, Compensation Curve, Choosing a compensation curve

Operation

Intellitouch II Control

PROGRAMMING PROCEDURE

NOTE: Use the shelf keys (15) to enter a numeric value. Use product keys (14) P for the nu- meral 9 and O for the numeral 0.

1.Set the POWER ON/OFF switch (1) to ON. The display reads OFF.

2.Press the POWER ON/OFF key (7) to power the controller. The display reads SELECT.

3.Press the PROG/ENTER key (5).

4.When the controller displays CODE ---?enter the manager’s code and press the PROG/EN- TER key (5). The display reads ---PROM---?.

NOTE: The manager’s code prevents unau- thorized entry to the program mode. The code must be entered to access the program mode. The factory default manager’s code is BAKE. Keep a copy of the default code in a safe place for future reference.

5.When the display reads PROG-?press one of the product keys A thru P (14). The selected lamp lights.

6.When the display reads PRHEAT TEMP-?enter a numeric temperature. Press the PROG/EN- TER key (5) to advance the controller.

7.When the controller displays CURVE-? COMP enter a two digit compensation curve. Press the PROG/ENTER key (5) to advance the con- troller. (Values 0 to15).

8.When the controller displays TEMP-? STAGE 1 enter a cook temperature for the selected product. Press the PROG/ENTER key (5) to advance the controller.

9.When the controller displays TIME-? STAGE enter a cook time for the selected product. Press the PROG/ENTER key (5) to advance the controller.

10.Use any key to cycle the fan speed through HIGH, LOW, or OFF for the selected product. If high or low is selected the display reads MODE-?. Use any key to cycle the fan mode through CONT (continuous), CYCLE, or

PULSE.

11.Repeat steps 8---10 for additional stages.

NOTE: If additional stages are not required, enter temperature of 0_ to end pro- gramming.

12.When the controller displays SAVE PROD-?press the PROG/ENTER key (5) to save the product settings and return to the SELECT state.

NOTE: The oven will not preheat unless a pro- gram is activated or a temperature has been set in manual mode.

COMPENSATION CURVE

Compensation curves are mathematical algo- rithms that adjust the rate of the countdown timer to compensate for variations in oven temperature above or below that of the setpoint temperature. Compensation curves offset time for variable con- ditions that effect the oven temperature allowing for consistent results.

If the oven temperature is below the setpoint the control slows the speed of the countdown, so that the time to elapse 1 second on the computer is longer than an actual second. If the oven tempera- ture is above the setpoint temperature the control increases the speed of the countdown, so that the time to elapse 1 second on the computer is shorter than an actual second.

Choosing a compensation curve

1.Develop a recipe for a specific product using the minimum load size and a compensation curve of 0. (i.e., no compensation, 1 second countdown = 1 second actual)

2.Use the maximum load size for your product. Enter a compensation curve of 7. Compare the results with those of a minimum load size.

3.If the maximum load size is lighter than the minimum load size, use a higher compensa- tion curve value and retry. If the maximum load size is darker than the minimum load size, use a lower compensation curve value and retry. Repeat until the results of the maximum load match the minimum load.

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