PENTAIR FLECK 5000 Control Valve Service Manual
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7
TIMER FEATURES
CONTINUED
Queueing a Regeneration
1.
Press the Extra Cycle button. The service icon will flash to
indicate that a regeneration is queued.
2.
To cancel a queued regeneration, press the Extra
Cycle button.
Regenerating Immediately
Press and hold the Extra Cycle button for five seconds.
TIMER OPERATION
Meter Immediate Control
A meter immediate control measures water usage and
regenerates the system as soon as the calculated system
capacity is depleted. The control calculates the system capacity
by dividing the unit capacity (typically expressed in grains/unit
volume) by the feedwater hardness and subtracting the reserve.
Meter Immediate systems generally do not use a reserve volume.
However, in twin tank systems with soft-water regeneration,
the reserve capacity should be set to the volume of water used
during regeneration to prevent hard water break-through. A
Meter Immediate control will also start a regeneration cycle at
the programmed regeneration time if a number of days equal to
the regeneration day override pass before water usage depletes
the calculated system capacity.
Meter Delayed Control
A Meter Delayed Control measures water usage and regenerates
the system at the programmed regeneration time after the
calculated system capacity is depleted. As with Meter Immediate
systems, the control calculates the system capacity by dividing
the unit capacity by the feedwater hardness and subtracting
the reserve. The reserve should be set to insure that the system
delivers treated water between the time the system capacity
is depleted and the actual regeneration time. A Meter Delayed
control will also start a regeneration cycle at the programmed
regeneration time if a number of days equal to the regeneration
day override pass before water usage depletes the calculated
system capacity.
Time Clock Delayed Control
A Time Clock Delayed Control regenerates the system on a timed
interval. The control will initiate a regeneration cycle at the
programmed regeneration time when the number of days since
the last regeneration equals the regeneration day override value.
Day of the Week Control
This control regenerates the system on a weekly schedule. The
schedule is defined 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 specified
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 flashes 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 continues
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 refill).
6.
Press the Extra Cycle button once more to advance the valve
back to in service.
NOTE:
If the unit is a filter or upflow, the cycle step order may
change.
NOTE:
A queued regeneration can be initiated by pressing the
Extra Cycle button. To clear a queued regeneration,
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.
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 configuration settings are stored in a non-volatile
memory and are stored indefinitely with or without line power.
The Time of Day flashes when there has been a power failure.
Press any button to stop the Time of Day from flashing.
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 overflows 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 interruptions are expected, the system
should be setup with a sufficient reserve capacity to compensate
for regeneration delays.
