DHB1 : No Stall Error - Pump B
To avoid serious injury follow all warnings and instructions in the manual. Wear appropriate personal protective equipment.
Pump A (DHA1) or Pump B (DHB1) does not stall in either direction during the pump calibration and stall test (keeps moving when dosing valve is closed).
Rebuild displacement pump and replace packings, balls, and seats
Replace needle/seat on dispense valve