20
SXT Master Programming Mode - Cont’d
9. Safety Factor (Display Code SF)
Press the Extra Cycle button. Use this display to set the Safety
Factor. This setting specifies what percentage of the system
capacity will be held as a reserve. Since this value is expressed
as a percentage, any change to the unit capacity or feed water
hardness that changes the calculated system capacity will result
in a corresponding change to the reserve volume. This option
setting is identified by “SF” in the upper left corner of the screen.
Use the UP and Down buttons to adjust the value from 0 to 50%
as needed.
Figure 11
Range: 0-50%
10. Fixed Reserve Capacity (Display Code RC)
Press the Extra Cycle button. Use this display to set the Reserve
Capacity. This setting specifies a fixed volume that will be held as
a reserve. The Reserve Capacity cannot be set to a value greater
than one-half of the calculated system capacity. The Reserve
Capacity is a fixed volume and does not change if the unit
capacity or feed water hardness are changed. This option setting
is identified by “RC” in the upper left corner of the screen. Use
the Up and Down buttons to adjust the value as needed.
Figure 12
Range: 0-half of the calculated system capacity
Figure 13
11. Variable Reserve (Display Code CR)
Press the Extra Cycle button. Use this display to set the Variable
Reserve. This setting is formulated to adjust the reserve depen-
dant on the previous calendar day’s water usage. During each
regeneration, the reserve will change based on the old reserve
capacity and the previous day’s water usage. This option setting
is identified by “CR” in the upper left corner of the screen.
12. Day Override (Display Code DO)
Press the Extra Cycle button. Use this display to set the Day
Override. This setting specifies the maximum number of days
between regeneration cycles. If the system is set to a timertype
control, the day override setting determines how often the sys-
tem will regenerate. A metered system will regenerate regardless
of usage if the days since last regeneration cycle equal the day
override setting. Setting the day override value to “OFF” disables
this function. This option setting is identified by “DO” in the upper
left corner of the screen. Use the Up and Down buttons to adjust
the value as needed.
Figure 14
Range: Off-99 days
13. Regeneration Time
Press the Extra Cycle button. Use this display to set the
Regeneration Time. This setting specifies the time of day the
control will initiate a delayed, manually queued, or day override
regeneration. This option setting is identified by “RT” in the upper
left corner of the screen. Use the Up and Down buttons to adjust
the value as needed.
14. Regeneration Cycle Step Times
Press the Extra Cycle button. Use this display to set the
Regeneration Cycle Step Times. The different regeneration cycles
are listed in sequence based on the valve type selected for the
system, and are identified by an abbreviation in the upper left
corner of the screen. The abbreviations used are listed below.
Figure 15
Abbreviation
Cycle Step
BD
Brine Draw
BF
Brine Fill
AD
Air Draw
BW
Backwash
RR
Rapid Rinse
SV
Service
