SECTION 4: BACKWASHING INSTRUCTIONS
Periodic backwashing of the Aqua-Pure
®
MCA Series Iron Reduction System bed is required to fl ush out the entrapped iron that has accumulated. This
procedure is performed automatically at 1:00 a.m. for a period of approximately 10 minutes, and will not interfere with a standard softener regeneration
cycle which is usually set for 2:00 a.m.
To Set Backwash Frequency:
To determine and set backwash frequency, follow these instructions:
1) Select backwashing frequency schedule corresponding to your model.
2) Locate box intersected by number of persons in your family and iron concentration of water (if iron concentration is between two numbers in sched-
ule, use higher number.)
3) Number in box represents number of times, in 12 days, timer should be set to regenerate. Refer to “How To Set Time Control” (page 4-3) to set timer.
Example: You have a 1 cubic foot Iron Reduction System, 4 in family and 8 ppm iron. Refer to schedule and locate box intersected by 4 in family and
8 ppm iron. The fi gure “1” in box indicates a backwash frequency of one time per 12 days (if a “2,” “3,” or “4” were in box, frequencies of twice,
three times and four times per twelve days respectively would be indicated.)
NOTE: The backwashing frequency schedules are based on average water consumption rates and are merely guides. They are NOT intended to be
used if water used by outside spigots, a swimming pool, geothermal heat pump, or other high water usage devices or activities are to be treated by
your MCA Series Iron Reduction System. If your application includes any of these, and you have already determined your MCA Series Iron Reduction
System is capable of handling the fl ow rates involved, refer to the next paragraph for instructions on setting backwash frequency.
If your water contains a high iron concentration, manganese, tannins or hydrogen sulfi de it may be advisable to increase the backwash frequency up to
daily, if necessary. It should be noted, however, that increasing the frequency or duration of backwashing WILL NOT overcome an insuffi cient pumping
rate.
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