There are multiple items to check here:

1. Are you getting weight readings in Manual Mode? How to get to Manual Mode

2. Has the drain weight been properly set? Here's How

3. Does the drain valve move in manual mode? How to get to Manual Mode

4. Are you getting a 301 error message in Manual Mode for the drain valve? Your configuration in the tablet doesn't match what modules the machine is seeing. Make sure the serial number in the tablet matches the drain valve serial number. To check this -> Data -> Mixmates -> Assemblies -> Inductor -> Drain Valve