Features of Vertical Shaft Dirty Water Pumps:

It safely discharges marble sludge, dirty, solid and small particles collected in septic tanks, foundations and similar places.
Water leakage, air intake, sealing and water retention issues have been eliminated. Pump shafts have been precision ground.
Points to Consider:

It will put 90 number oil before starting the pump. The pipe must be filled with oil.
The pump should be suspended from the connection flange. A sensitive switch suitable for the amperage of the motor should be installed. The voltage should be correct without applying electricity to the motor; Care should be taken to avoid water dripping on the engine.
Maintenance:

The oil level should be checked once a month and any remaining oil should be replaced.
Care should be taken not to throw nylon, wood, stone, cloth, cotton and similar items into the septic tank.