Hydrotech 2510 AIO SXT Chemical Free Iron Filter Operation Manual - Manual (Page 9)

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Section 4: Operating Instructions
The valve has been pre-programmed with factory settings as follows:
Regeneration Cycle Step Programming
1. Backwash ....................................14 minutes
2. Air Draw ........................................ 40 minutes
3. Rapid Rinse .................................4 minutes
Whenever the valve is in Service the current time of day can be set, the control programmed, or an extra regeneration
initiated at any time.
Figure 3
next-Sand Start-Up Instructions
Water-only backwash
1. Check that the correct backwash (BW) flowrate has been determined based on the water temperature. (See table below)
2. Allow the tank to slowly fill with water from the bottom. This is most easily accomplished by setting the control valve to the backwash
position and partially opening the inlet valve until water flows from the drain line.
3. Allow the media to soak for at least 30 minutes.
4. Fully open the inlet valve and set the control valve in the backwash position.
5. Depending on how critical the application is, allow the filter to backwash for 20 to 30 minutes. Continue the backwash until the water
is clear and free of particles. This is backwash #1.
6. Allow the filter to settle for 10 to 15 minutes. Do not allow the control valve to enter the fast rinse cycle.
7. Depending on how critical the application is, allow the filter to backwash again for 15 to 20 minutes. This is backwash #2.
8. Allow the filter to fast rinse (downflow) for 5 to 8 minutes.
9. The filter is now ready for service.
Tank Diameter 8" 10" 12" 14" 16" Reference
gpm@80°F 8 12 18 24 24 23 gpm/ft2
gpm@70°F 7 11 16 21 21 20 gpm/ft2
gpm@60°F 6 9 13 18 18 17 gpm/ft2
gpm@50°F 5 8 12 16 16 15 gpm/ft2
gpm@40°F 4 7 10 13 13 13 gpm/ft2
Backwash Rate