Maintenance Checklist for Rapid Mix,
Flocculation, and Sedimentation Basins
Drain, wash down walls, flush sediment
to waste line. (3)
Repair spalled spots on walls and
bottom. Check valves or sluice gates,
lubricate, and paint as necessary.
Baffled mixing chambers
Clean baffles and repair as necessary.
Check paddle rotation to ascertain
whether any flocculators are
Clean and lubricate drive, bearings,
gears, and other mechanical parts.
penetration. Replace scored bearings.
Rapid (or flash) mixers
drive shaft. Lubricate and paint as
Drain tank. Check submerged parts.
D or W
Speed reducers and Remove water and grit. Replace oil as
Lubricate (but do not over lubricate).
Check oil level.
Drain water from housing.