Laserfiche WebLink
SCq(l <br /> To pN odfuShnPn� <br /> q,rd;a9nan ,� tant�T.w <br /> �W.%den pump P \ R'nG Vo IWr <br /> rank kt..dr/LGOO <br /> '/ To♦H a�J us/menf <br /> AankWT�n_ onr <br /> n,/&-wady <br /> soltnold Ya)vrr <br /> WL / o <br /> Sc/�nara ks/res ' [ebn?o lCr <br /> FIGURE 3-5 CAUSTIC FEED OPERATION <br /> 3 . 3 CAUSTIC FEED The 2-way solenoid valves are energized <br /> OPERATION by Kari float switch signals from <br /> equalization tank B. The supply air <br /> flows through the two way solenoid <br /> valves and filter/regulator/lubricator <br /> to operate the air diagram Wilden pump. <br /> If no caustic feeding demand, the air <br /> diagram Wilden pump must operate to <br /> circulate the caustics . <br /> -If 2 - 4 pH range in adjustment tank 1 , <br /> pH probe #1 will send a signal to pH <br /> monitor #1 ; the pH monitor will <br /> energize the 3-way solenoid valve #1 to <br /> close the air and open the pink valve <br /> (caustic valve) . <br /> -If 2 to 6 . 5 pH range in pH adjustment <br /> tank 2 , the pH probe #2 sends a signal <br /> to pH monitor #2 , the pH monitor <br /> energizes the 3-way solenoid valve #2 to <br /> close the air and open the pink valve #2 <br /> which feeds caustic . <br /> 13 <br />