What to do if the Samson 3372 actuator stem does not move on demand?
- TTammy AyalaJul 27, 2025
If the Samson Controller actuator stem isn't moving, there might be a few reasons. First, the actuator could be blocked. You should check its attachment and unblock it. Be careful, as a blocked actuator can suddenly move uncontrollably, potentially causing injury. Disconnect the pneumatic air supply and control signal before attempting to unblock it, and release any stored energy, like spring compression, beforehand. Another possibility is insufficient signal pressure, so check the signal pressure and the signal pressure line for leaks. Also, ensure the signal pressure is connected to the correct diaphragm chamber. If none of these solutions work, the diaphragm in the actuator may be defective.