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Te phiadJusim�nl- To{/oacu/ah[v, <br /> In^k O!'It lanC <br /> Sinal(Cndii/TK/1 <br /> Ohan9P flow Ynscr r <br /> oulpul is s -ZomA i <br /> Po/ymn- <br /> MNrnn' Pumr <br /> �► L ` <br /> F,wn C.bnfN to fi lyWnfrr <br /> honk <br /> Cnn Flo, <br /> paddle whorl - ; s,e�/rh <br /> "osensol- (nf fA <br /> 2639 polymer Ze44 Polymer <br /> Pkv nK lank- <br /> FIGURE 3-7 POLYMER FEED OPERATION <br /> 3 . 5 POLYMER FEED When wastewater reaches the top of the <br /> OPERATION clarifier tank and flows out to the <br /> city, the paddle wheel flosensor sends a <br /> signal to the signal conditioner; the <br /> signal conditioner changes the flow <br /> sensor output to the current range from <br /> 4 - 20mA; both polymer metering pumps <br /> use the current 4 - 20 mA signal to <br /> operate. <br /> -2839 polymer will feed pH adjustment <br /> tank 2. <br /> -2844 polymer will feed the <br /> flocculation tank. <br /> Both Kari float switch' s in the polymer <br /> tanks will send a signal to energize <br /> the alarm to warn the operator that the <br /> tank needs to be refilled. <br /> 15 <br />