Aqua-Pure CBF150 - Manual (Page 10)

Step 11
Determination of backwash frequency will vary by media used, the
amount of water used and the amount of contaminant in the water.
Most media should backwash once every four days in backwash fi ltra-
tion systems containing activated carbon. If pressure drops become
undesirable or the contaminant reappears, increase the frequency to
correct. For media tanks containing calcite or magnesium oxide, the
frequency should be once every other day to help prevent cementing
of the media in the media tank. Correct backwashing frequency as
required. Tank should be marked for easier maintenance.
Step 12
If your CBF Series Residential Backwash Filtration System contains
activated carbon or fi lter sand proper saturation time is critical. Refer
to Figure 4 to determine the proper saturation time for that media type.
Step 13
Turn on the electrical power to the well pump or open the valve on the municipal supply and pressurize the water line and check for leaks, correct as
required. Locate the regeneration button on the control valve and initiate a manual regeneration (see “HOW TO MANUALLY INITIATE IMMEDIATE REGEN-
ERATION”), ensure the bypass valve is in the bypass position. Once the control valve stops in the fi rst position, unplug control valve so the valve will not
stage to another position to ensure proper start up and media classifi cation. Open the INLET side of bypass 1/4 turn to allow water to run slowly to the
waste drain until no air is heard in the drain line. Then slowly open the inlet side of bypass fully and let run until the waste water is clear, it should take
about 10 minutes. Then open the OUTLET side of the bypass into the fully open position. During the initial backwash cycle it is normal for a small amount
of “fi nes” to appear at the drain for proper preparation of media bed. It will subside within a few regeneration cycles and should not alarm you.
Step 14
Plug the control valve into the 110v 60Hz power source once again and ensure the time clock is properly set for time and frequency of regeneration. The
control valve will stage by itself and return to the service position.
IMPORTANT NOTES IMPORTANT NOTES
Flush at least 10 gallons (37.9 liters) through this system during installation and maintenance. It may be necessary to continue fl ush-
ing beyond 10 gallons until the water is clear.
Saturation Time Table
Media Time Required
Activated Carbon 4 hours
Activated Carbon for Chloramine 4 hours
Neutralizer Blend 30 minutes or less
Filter Sand 2 hours
Filter-Ag ® 4 hours
Birm ® 2 hours
Calcium Carbonate (Calcite) 2 hours
Magnesium Oxide 30 minutes or less
Multilayer 2 hours
Greensand 4 hours
Figure 4
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