First Sales OXY2-10, Installation Instructions And Owner'S Manual

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Enter Programming Mode:
Press and Hold the SET Button for 5 seconds.
OXY2E Setting Time of Day
Use Up Button to set current hour
Use Up Button to set current minute
Use Up Button to set AM/PM
Default setting is 20 GPG. This iron filter does not meter the
water use. Adjusting the water hardness setting will have
no effect on frequency of regeneration or water quality.
Exit Programming Mode