Why am I seeing different fluid levels in the filter bags at stations 1-3 vs. 4-6?

This may be the result of one of the IDF or SDF valves being stuck in a closed or partially closed position. Using the Diagnostics screen select Valve Test and look for IDF Inlet, SDF Inlet, and Waste buttons. Run a brief test using the screen to open and close each valve. Confirm by looking at the pinch valve at the back of the instrument to see that it is opening and closing properly. 
 
If any of the valves are not opening properly, refer to TDF Service Procedure Pinch Valve Replacement Output (TS008) to replace the Pinch Valve. The Pinch Valve Assembly-IDF/SDF (Part #: TDF29) or Pinch Valve Assembly- Waste (Part #: TDF29.1) can be ordered on our website or by calling (315) 986-8090.