1. The user must only fill the housing once with the liquid to be pumped or
with water. This is designed to retain this priming liquid even if the pump
is shut off. When started, the pump impeller mixes air from the suction line
with priming liquid. The resulting froth is expelled into the priming
chamber where the bubbles collapse, allowing the air to pass off through the
discharge. The liquid from the bubbles falls back and is retained in the
pump until mixed with more air from the suction line.
2. This process continues until all the air is evacuated from the suction
line and the liquid to be pumped rises to the impeller. Normal pumping takes
over from here
