Test Procedure

This image is a Logic Diagram of a Flow Control Device for a computer or programmable logic controller.

• In Inspect Mode, the Flow Control Device is Off
• In Product Mode, if the temperature is greater than Legal Pasteurization temperature, a signal goes to the flow control device starter to operate. If the temperature is not met, a signal is sent by the divert micro switch and the detect micro switch which signal the fully diverted flow position. The flow control device starter is then energized. When the pasteurization temperature goes below the legal pasteurization temperature a time delay relay may be installed to permit the flow control device to continue operating during the normal time it takes for the flow diversion device to move from forward flow to diverted flow ( not more than one second delay).
• In clean in-place mode, there is a 10 minute delay before the clean in-place operation starts and a signal is sent to the flow control device starter. If the 10 minute delay is not used when clean in-place is initiated then no signal can be sent to the flow control device starter.