To perform a functional test on your Harvest Right freeze dryer, follow these steps:

1. Power On: Turn on your freeze dryer.
2. Access Functional Testing Screen: Navigate to the functional testing screen by touching the leaf icon in the top left corner of the home screen.
3. Run Tests: On the functional testing screen, you will see options to test various components of the freeze dryer, such as the refrigeration system (freeze), the vacuum pump, and the heater.
4. Freeze Test: To test the freeze function, toggle the "Freeze" switch to the on position and observe the system for a few minutes to ensure it is getting cold.
5. Vacuum Test: To test the vacuum pump, ensure the chamber is sealed, then toggle the "Vacuum" switch to the on position. Watch the pressure reading on the screen to ensure it is pulling down to an appropriate vacuum level.
6. Heater Test: To test the heater, toggle the "Shelf Heater" switch to the on position. After a few minutes, check to see if the shelves are warming up.
7. End Test: After you have completed your tests, toggle the switches to the off position to stop testing each component.
8. Review Results: If all components are functioning as expected, the freeze dryer should be ready for use. If any component is not working properly, it may indicate an issue that needs further investigation or assistance.