When connecting hoses on chemical feed cans, be careful not to exert any side force on
the barb hose fittings; they are easily broken.
(1) Blue tube to POLYMER can.
(2) Green tube to SODIUM HEX can.
(3) Red tube to CHLORINE can.
(4) Yellow tube to CITRIC ACID can.
Figure 2-38. Tubes Attached to Chemical Feed Pump
Chemicals used for operating ROWPU can kill you. The chemicals alone or in mixture
can be dangerous. ALWAYS wear protective clothing and make sure area is well
Use only chlorine-free water for mixing to prevent damage to ROWPU membranes. If
this is the first time the ROWPU is being started, use raw water to mix chemicals. If you
are restarting the unit, use brine from storage tank.
Mix polymer chemical: