The following explanation is the flow process through the 600 gph ROWPU. As you read through this section, refer to the flow diagram in figure 9-13(B). Water is delivered to the ROWPU through the raw water pump. Upon entering the unit, it goes through the multimedia filter. This filter removes small and large solids. From the multimedia filter, the water is picked up by the booster pump that pushes the water through the cartridge filter. The cartridge filter takes out suspended solids that passed through the multimedia filter. From the cartridge filter, the water is picked up by the RO pump that pushes the water under high pressure through the pulse dampener and into the RO elements. The RO elements remove dissolved minerals and other bacteria that passed through the filters. The product water leaving the last element receives enough chlorine to kill any remaining bacteria.

Figure 9-13(B). - Water flow through the 600 gph ROWPU.