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ADVANTEX— O&WMANUAL <br /> 3 Verify that there is equal spray on and under 7 Check squirt height and compare residual <br /> all orifice shields. (Each orifice shield should pressure against the start-up value. <br /> show signs of organic biomar build-up on and <br /> underneath it.) <br /> t If the squirt height is 40-50%higher than the <br /> IRji e 1 ;1, .- <br /> start-up value,clean and flush the manifold. (A <br /> 50%increase in squirt height signals approximate- <br /> ly 18%orifice blockage.)To flush laterals you can <br /> 4 Check for clogged orifices (orifice shields with- run the pump or use a bottle brush or pressure <br /> r out spray or biomat build-up underneath).You washer. Brushing or pressure washing is best. <br /> !� should be able to observe uniform water droplets <br /> I dancing around orifice shields while dosing. <br /> Flushing with pump <br /> Flushing with pressure <br /> washer or bottle brush <br /> (When flushing AX laterals, biosolids slough into <br /> the bottom of the filter, then return to the tank.) <br /> _ r Verify again that all orifices are clear. Re-check <br /> squirt height. <br /> 8 For the RX Series filter only,verify ventilation <br /> fan operation and air flow, Use an anemometer <br /> (available through Orenco) to measure the air <br /> ! Assess the character and color of the biomar. If flowing through the system. 10-15 cubic feet per <br /> it seems appropriate, take a photo and comment minute(cfm)per pod is typical. Record inlet flow <br /> on the growth and characteristics of the biologi- and outlet flow,where applicable, to ensure there <br /> cal mat under and around the orifice shields. isn't a large difference between them.A large <br /> Biomats are natural and normally appear light- difference means that leaking or bypassing is <br /> brown to dark-brown and gelatinous in texture. occurring.Clean as necessary. <br /> If the mat appears too light(yellowish with the <br /> texture of lard,wax, or margarine), the grease and � y 4 <br /> oil concentrations should be checked. <br /> 6 Check the odor emitting from the filter. If a <br /> strong or offensive odor(e.g., smell of rotten <br /> eggs, rotten cabbage, etc.) is emitted, measure the <br /> DO level in rhe filtrate and recirculation cham- <br /> ber and adjust the recirc rime, if necessary. <br /> (Normally,systems.will smell must)4 earthy, or <br /> moldy but nor pungent). "'°� <br />