If rotating the knob on the keypad panel does not change the selected data field value, the signal from the potentiometer is not being received by the iControl PC. If this happens, check the wiring connections from the keypad panel to the iControl PC. If the connections are good, replace the keypad panel.
WARNING: Do not spray powder with the iControl console door open unless the console opening, the door, and all externally connected devices are out of the hazardous area surrounding any opening of the spray booth. The hazardous area extends 3 feet outward from an opening and continues in a 3 foot arc from the edge of an opening. Failure to observe this warning could create a hazardous condition and could result in personal injury or property damage.
Temporary Fix: Perform a program shutdown and turn off console power. Connect a standard PC keyboard with a PS2 connector to the KEYBOARD port on the left side of the iControl PC. Turn on power and use the numeric keys to enter values in selected data fields, or use the up and down arrow keys to change field values. Replace the keypad as soon as possible.