
11
FMR 60M–450M SXT 1-1/2” TWIN ALTERNATING METERED
OPERATION
CONTROLLER OPERATION (continued)
DAY OF THE WEEK CONTROL
This control regenerates the system on a weekly schedule. The schedule is dened in Master Programming by setting
each day to either “off” or “on.” The control will initiates a regeneration cycle on days that have been set to “on” at the
specied regeneration time.
CONTROL OPERATION DURING REGENERATION
During regeneration, the control displays a special regeneration display. In this display, the control shows the current
regeneration step number the valve is advancing to, or has reached, and the time remaining in that step. The step
number that displays ashes until the valve completes driving to this regeneration step position. Once all regeneration
steps are complete the valve returns to service and resumes normal operation.
Pressing the Extra Cycle button during a regeneration cycle immediately advances the valve to the next cycle step
position and resumes normal step timing.
CONTROL OPERATION DURING PROGRAMMING
The control only enters the Program Mode with the valve in service. While in the Program Mode, the control contin-
ues to operate normally monitoring water usage and keeping all displays up to date. Control programming is stored in
memory permanently, eliminating the need for battery backup power.
MANUALLY INITIATING A REGENERATION
1. When timer is in service, press the Extra Cycle button for 5 seconds on the main screen.
2. The timer advances to Regeneration Cycle Step #1 (backwash), and begins programmed time count down.
3. Press the Extra Cycle button once to advance valve to Regeneration Cycle Step #2 (brine draw & slow rinse).
4. Press the Extra Cycle button once to advance valve to Regeneration Cycle Step #3 (rapid rinse).
5. Press the Extra Cycle button once to advance valve to Regeneration Cycle Step #4 (brine rell).
6. Press the Extra Cycle button once more to advance the valve back to in service.
NOTE: If the unit is a lter or upow, the cycle step order may change.
NOTE: A queued regeneration can be initiated by pressing the Extra Cycle button. To clear a queued regener-ation,
press the Extra Cycle button again to cancel. If regeneration occurs for any reason prior to the delayed regeneration
time, the manual regeneration request shall be cleared.
TIMER FEATURES
CONTROL OPERATION DURING A POWER FAILURE
The SXT includes integral power backup. In the event of power failure, the control shifts into a power-saving mode.
The control stops monitoring water usage, and the display and motor shut down, but it continues to keep track of the
time and day for a minimum of 48 hours.
The system conguration settings are stored in a non-volatile memory and are stored indenitely with or without line
power. The Time of Day ashes when there has been a power failure. Press any button to stop the Time of Day from
ashing.
If power fails while the unit is in regeneration, the control will save the current valve position before it shuts down.
When power is restored, the control will resume the regeneration cycle from the point where power failed. Note that
if power fails during a regeneration cycle, the valve will remain in it’s current position until power is restored. The
valve system should include all required safety components to prevent overows resulting from a power failure during
regeneration.
The control will not start a new regeneration cycle without line power. If the valve misses a scheduled regeneration
due to a power failure, it will queue a regeneration. Once power is restored, the control will initiate a regeneration
cycle the next time that the Time of Day equals the programmed regeneration time. Typically, this means that the
valve will regenerate one day after it was originally scheduled. If the treated water output is important and power inter-
ruptions are expected, the system should be setup with a sufcient reserve capacity to compensate for regeneration
delays.