If your rotary valve is not rotating, it could be an issue with the power, the chain, the gearbox, or a foreign object stuck in the valve’s inlet.
If it’s stuck because of material buildup, there are a few different areas to look at: inspect the supply source and the piping of your conveying line. The issue could also be related to excessive pocket fill, moisture, or blowby air.
These are all specific issues, so check your maintenance manual for more in-depth troubleshooting tips.
