How to Read the Temperature Chart
The temperature variance for CHANNEL 1 for the past 12 hours is automatically scanned on the screen in six equal columns. The variance is represented in rows of degrees C above or below the current temperature at 0 Hr (current time) and 0°C (no variance).
Ice Warning
The ice warning is selected on the ICE WARNING slide switch located on the main unit and applies only to CHANNEL 1.
To activate the warning, slide the switch to ON. When the tem- perature recorded at CHANNEL 1 falls to between 28.4°F
