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InstafatiAn Guth.: end4lAdvanTex" Systems • This worksheet is intended to help you determine appropriate start-up timer settings(Pump ON,pump OFF) for a single-pod AX20 system.Typical valves and ranges are provided for each parameter.As you gain experience with a system,you may conclude that you need to make adjustments, sometimes significant ones.If you have any questions or if your values fall outside the desired ranges on this worksheet,contact your Dealer. Number of people 3 Range of 2 to 8 people. Water usage per person 50 gpd Typical daily average is 50 gallons per person. Qi Actual daily flow(total) 150 gpd (Number of people)x(water usage per person). Rb Return recirculation ratio 3: 1 You can adjust this ratio(return flow ta:forward flow)up or down depending on system performance.(Range of 2 to 6,) Total daily flow to AX20 600 gpd (Actual daily flow)x(return recirculation ratio+ 1). Must be s 3000 gpd.Actual flow should not exceed 500 gpd. (500 gpd x 6:1 Rb=3000 gpd) Qd Actual pump dose rate 33.3 gpm Oetarmine this value by field-testing or by using Orenco's PumpSelectr"r.Start at the low and. Td Pump ON cycle time(dose) 0.25 min Select a value between 0.25 minutes(15 seconds)and 0.75 minutes 05 seconds). Tr Pump OFF cycle time(rest) 19.74 min See Pump OFF equation below. Ptugging in the above values and'rounding,we get the following: 1440 • Td • Qd 1440• 0.25 • 33.3 T, = —Td T, = »- 0.25. = 19.74=19.75 (N+1) • Qi (3 +1) . 150 After you determine your Pump ON and Pump OFF times,double checkto make sure your start-up settings fall within the cycle time(CT)range,below.If they don't,make adjustments per the"Note." 4 CT Cycle time 20.0 min Try not to exceed 30 min per cycle to avoid drying out the treatment media.If value exceeds 30 min,decrease ON time. (If this is at the minimum,increase recirc ratio.) Pump cycles per day 72 cycles 1440 min/day+(OFF cycle time.*ON cycle time). Must not exceed the pump's maximum rated cycles per day of 300 cycles per day. Gallons per cycle 8.3 gal With 68 orifices and using the Td range recommended above, you will maintain the recommended 0.12 to 0.25 gallons per orifice per dose. Number of People Time ON(seconds) Time 011e(minutes) NOTES: 2 15 29.75 -Assumes water usage of 50 gallons per person 3 15 19.75 per day and a return recirculation ratio of 3: 1. 4 30 29.75 -Override OFF cycle time is set at one-half of the 5 30 23.75 OFF cycle time. Override ON cycle time is setthe 6 30 19.15 same as the ON cycle time. ®2004 orenao Systems*Inc. Nlil-IIrX.lUL-1 Aer8.i.001At.