DFA1: Stall Up Error- Pump A

To avoid serious injury follow all warnings and instructions in the manual. Wear appropriate personal protective equipment.

Pump A (DFA1) or Pump B (DFB1) does not stall up during the pump calibration and stall test (keeps moving up when dosing valve is closed).

Rebuild displacement pump and replace packings, balls, and seats

Replace needle/seat on dispense valve