Cornelius I Series Spécifications télécharger pdf (Page 19)

TP00952

November 26, 200114

FIGURE 8

FREEZE CYCLE

1. Ten seconds after the fill valve turns off, the microprocessor records the water level.

2. Using the recorded high water level, the calibration level and the ice thickness level, the micropro-

cessor calculates a harvest level.

3. The microprocessor monitors the water level until it reaches the harvest level.

NOTE: As ice builds on the evaporator the water level in the water pan drops. This is called

batch harvesting.

HARVEST CYCLE

1. The hot gas solenoid opens, the dump solenoid opens, and the water pump remains running for 15

seconds.

2. The microprocessor monitors the proximity switches waiting for the circuit to open.

3. Once all of the proximity switch circuits have opened, the hot gas solenoid closes.

4. The microprocessor monitors the proximity switches to close.

5. Once all the proximity switch circuits close, the harvest cycle terminates.

NOTE: When the pressure inside, the pressure sensor pick up lowers to a predetermined value,

the pressure transducer starts the harvest cycle.

FAN CONTROL

1. Fan control operates when the hot gas solenoid is closed.

2. The fan turns off when the condenser temperature is below 88_F.

3. The fan turns on when the condenser temperature is above 100_F.

CALIBRATION MODE

1. During initial start up, microprocessor reads the dump cycle dip switch setting.

2. If both switches are on, the machine goes into calibration mode.

3. Calibration mode allows the board to have power, but no outputs are turned on.

4. Calibration mode is a factory mode for calibrating the pressure sensor.

5. The unit remains in calibration mode until the power is cycled.

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Cornelius I Series Spécifications Page 19