7
How to set Time of Day:
1. Press and hold the red button to disengage the 24 hour gear.
2. Turn the large 24 hour gear until the actual time of day is at the time of day arrow.
3. Release the red button to again engage the 24 hour gear.
How to set the Days of Regeneration:
It is recommended that you contact First Sales technical services to have your regeneration schedule calculated
based on test results you received from a certified laboratory. Otherwise, use Table 1 or Table 2 from page 8 to
get an approximation of the regeneration schedule required:
1. Refer to the appropriate table for your water softener model number (page 8) to determine how
many TIMES in a 12 day cycle the FSN should regenerate. If the nitrate level falls between two
numbers in the table, use the next highest number.
Example:
FSN10
4 people in family
Nitrates 35 ppm
Result:
Set softener to regenerate 2 TIMES in 12-day cycle (once every 6 days)
2. Rotate the skipper wheel until the number 1 is at the red pointer. Each number represents a day.
The number by the red pointer is tonight.
3. Slide the metal tabs outward on the desired days of regeneration.
How to Manually Initiate a Regeneration Cycle:
1. Grab the manual regeneration knob and turn clockwise SLIGHTLY. The drive gear will engage the
backwash knob which will make a complete revolution and return to the “Service” position after the
regeneration cycle.
Timer Operation
FSN Series Time Clock Setting Instructions
FIGURE 5: Front of Time Clock Timer Assembly
