Model Number: ____________________________________________
Water Hardness: __________________________________ppm or gpg
Capacity Per Unit: __________________________________________
Mineral Tank Size: ___________ Diameter: ________Height: ________
Salt Setting per Regeneration: ________________________________
1. Type of Timer:
A. Time Clock
B. Meter Initiated
2. Downflow: Upflow Upflow Variable
3. Meter Size:
A. 3/4-inch Turbine
B. 3/4-inch Paddle Wheel
C. Electronic ____Pulse Count ___ Meter Size ____________
4. System Type:
A. System #4: 1 Tank, 1 Meter, Immediate, or
Delayed Regeneration
B. System #4: Time Clock
5. Timer Program Settings:
A. Backwash: ______________________________ Minutes
B. Brine and Slow Rinse:_____________________ Minutes
C. Rapid Rinse: ____________________________ Minutes
D. Brine Tank Refill: ________________________ Minutes
E. Pause Time: ____________________________ Minutes
F. Second Backwash: _______________________ Minutes
6. Drain Line Flow Control: gpm
7. Brine Line Flow Controller: gpm
8. Injector Size#:
CALIFORNIA PROPOSITION 65 WARNING
This product contains chemicals known to
the State of California to cause cancer or
birth defects or other reproductive harm.
2 • FLECK
5600SXT Downflow Service Manual
Page 3
INSTALLATION
CAUTION
Water Pressure
A minimum of 20 pounds (1.4 bar) of water pressure is
required for regeneration valve to operate effectively.
Electrical Facilities
An uninterrupted alternating current (A/C) supply is required.
NOTE: Other voltages are available. Please make sure your
voltage supply is compatible with your unit
before installation.
Existing Plumbing
Condition of existing plumbing should be free from lime and
iron buildup. Piping that is built up heavily with lime and/
or iron should be replaced. If piping is clogged with iron,
a separate iron filter unit should be installed ahead of the
water softener.
Location Of Softener And Drain
The softener should be located close to a drain to prevent air
breaks and back flow.
Bypass Valves
Always provide for the installation of a bypass valve if unit is
not equipped with one.
Water pressure is not to exceed 125 psi (8.6 bar),
water temperature is not to exceed 110°F (43°C),
and the unit cannot be subjected to
freezing conditions.
Installation Instructions
1. Place the softener tank where you want to install the unit
making sure the unit is level and on a firm base.
2. During cold weather, the installer should warm the valve
to room temperature before operating.
3. All plumbing should be done in accordance with local
plumbing codes. The pipe size for residential drain line
should be a minimum of 1/2 inch (13 mm). Backwash
flow rates in excess of 7 gpm (26.5 Lpm) or length in
excess of 20 feet (6 m) require 3/4 inch (19 mm) drain line.
Commercial drain lines should be the same size as the
drain line flow control.
4. Refer to the dimensional drawing for cutting height of the
distributor tube. If there is no dimensional drawing, cut
the distributor tube flush with the top of the tank.
5. Lubricate the distributor o-ring seal and tank o-ring seal.
Place the main control valve on tank.
NOTE: Only use silicone lubricant.
6. Solder joints near the drain must be done prior to
connecting the Drain Line Flow Control fitting (DLFC).
Leave at least 6 inches (15 cm) between the DLFC and
solder joints when soldering pipes that are connected on
the DLFC. Failure to do this could cause interior damage
to the DLFC.
7. Plumber tape is the only sealant to be used on the drain
fitting. The drain from twin tank units may be run through
a common line.
8. Make sure that the floor is clean beneath the salt storage
tank and that it is level.
9. Place approximately 1 inch (25 mm) of water above the
grid plate. If a grid is not utilized, fill to the top of the air
check (Figure 1) in the salt tank. Do not add salt to the
brine tank at this time.
10. On units with a by-pass, place in bypass position. Turn on
the main water supply. Open a cold soft water tap nearby
and let run a few minutes or until the system is free from
foreign material (usually solder) that may have resulted
from the installation. Once clean, close the water tap.
11. Slowly place the by-pass in service position and let water
flow into the mineral tank. When water flow stops, slowly
open a cold water tap nearby and let run until the air is
purged from the unit.
12. Plug unit into an electrical outlet.
NOTE: All electrical connections must be connected
according to local codes. Be certain the outlet
is uninterrupted.
60002 Rev E
Figure 1 Residential Air Check Valve
START-UP INSTRUCTIONS
The water softener should be installed with the inlet,
outlet, and drain connections made in accordance with the
manufacturer’s recommendations, and to meet applicable
plumbing codes.
1. Turn the manual regeneration knob slowly in a clockwise
direction until the program micro switch lifts on top of the
first set of pins. Allow the drive motor to move the piston to
the first regeneration step and stop. Each time the program
switch position changes, the valve will advance to the next
regeneration step. Always allow the motor to stop before
moving to the next set of pins or spaces.
NOTE: For electronic valves, please refer to the manual
regeneration part of the timer operation section.
If the valve came with a separate electronic timer
service manual, refer to the timer operation section of
the electronic timer service manual.
2. Position the valve to backwash. Ensure the drain line flow
remains steady for 10 minutes or until the water runs clear
(see above).
3. Position the valve to the brine / slow rinse position. Ensure
the unit is drawing water from the brine tank (this step may
need to be repeated).
4. Position the valve to the rapid rinse position. Check the
drain line flow, and run for 5 minutes or until the water
runs clear.
5600SXT Downflow Service Manual • 3
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Page 4
STARTUP INSTRUCTIONS
CONTINUED
5. Position the valve to the start of the brine tank fill cycle.
Ensure water goes into the brine tank at the desired
rate. The brine valve drive cam will hold the valve in this
position to fill the brine tank for the first regeneration.
6. Replace control box cover.
7. Put salt in the brine tank.
NOTE: Do not use granulated or rock salt.
TIMER FEATURES
Setting the Time of Day
1. Press and hold either the Up or Down buttons until the
programming icon replaces the service icon and the
parameter display reads TD.
2. Adjust the displayed time with the Up and Down buttons.
3. When the desired time is set, press the Extra Cycle button
to resume normal operation. The unit will also return
to normal operation after 5 seconds if no buttons are
pressed.
Error/
Information
Icon
Service
Icon
Parameter
Display
Programming
Icon
Extra Cycle
Button
DisplayPMIndicator
Up
Button
Data
Down
Button
Flow Indicator
x1000 Indicator
Figure 2
Features of the SXT:
• Power backup that continues to keep time and the
passage of days for a minimum of 48 hours in the event
of power failure. During a power outage, the control
goes into a power-saving mode. It does not monitor
water usage during a power failure, but it does store
the volume remaining at the time of power failure.
• Settings for both valve (basic system) and control type
(method used to trigger a regeneration).
• Day-of-the-Week controls.
• While in service, the display alternates between time
of day, volume remaining or days to regeneration, and
tank in service (twin tank systems only).
• The Flow Indicator flashes when outlet flow is detected.
• The Service Icon flashes if a regeneration cycle has
been queued.
• A Regeneration can be triggered immediately by
pressing the Extra Cycle button for five seconds.
• The Parameter Display displays the current Cycle Step
(BW, BF, RR, etc) during regeneration, and the data
display counts down the time remaining for that cycle
step. While the valve is transferring to a new cycle
step, the display will flash. The parameter display will
identify the destination cycle step (BW, BF, RR, etc) and
the data display will read “----”. Once the valve reaches
the cycle step, the display will stop flashing and the
data display will change to the time remaining. During
regeneration, the user can force the control to advance
to the next cycle step immediately by pressing the extra
cycle button.
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.
4 • FLECK 5600SXT Downflow Service Manual
Page 5
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 feed water 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 feed water
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.
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 (rapid
rinse), and begins programmed time count down.
3. Press the Extra Cycle button once to advance valve to
Regeneration Cycle Step #2 (backwash).
4. Press the Extra Cycle button once to advance valve to
Regeneration Cycle Step #3 (brine draw & slow 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.
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.
5600SXT Downflow Service Manual • 5
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Page 6
MASTER PROGRAMMING MODE CHART
CAUTION
Before entering Master Programming, please contact your local professional water dealer. To enter
Master Programming, set time to 12:01 PM.
Master Programming Options
AbbreviationParameterOption
Abbreviation
DFDisplay Format
VTValve Type
CTControl Type
NTNumber of Tanks
TSTank in Service
CUnit CapacityUnit Capacity (Grains)
HFeedwater HardnessHardness of Inlet Water
RS
SFSafety FactorPercentage of the system capacity to be used as a reserve
RCFixed Reserve CapacityFixed volume to be used as a reserve
DODay OverrideThe system’s day override setting
RTRegen TimeThe time of day the system will regenerate
BW, BD, RR, BF
D1, D2, D3, D4, D5,
D6, & D7
CDCurrent DayThe Current day of the week
FMFlow Meter Type
KMeter Pulse SettingMeter pulses per gallon for generic/other flow meter
NOTE: Some items may not be shown depending on timer configuration. The timer will discard any changes
and exit Master Programming Mode if any button is not pressed for sixty seconds.
6 • FLECK
5600SXT Downflow Service Manual
Reserve SelectionSFPercentage Safety Factor
Regen Cycle Step
Times
Day of Week Settings
GALGallons
LtrLiters
dF1bDownflow/Upflow Single Backwash
dF2bDownflow Double Backwash
FltrFilter
UFbdUpflow Brine First
UFtrUpflow Filter
OthrOther
FdMeter (Flow) Delayed
FIMeter (Flow) Immediate
tcTime Clock
dAYDay of Week
1Single Tank System
2Two Tank System
U1Tank 1 in Service
U2Tank 2 in Service
rcFixed Reserve Capacity
The time duration for each regeneration step. Adjustable from
OFF and 0-199 minutes.
NOTE: If “Othr” is chosen under “Valve Type”, then R1, R2, R3,
etc, will be displayed instead
Regeneration setting (On or OFF) for each day of the week on
day-of-week systems
t0.73/4-inch Turbine Meter
P0.73/4-inch Paddle Wheel Meter
t1.01-inch Turbine Meter
P1.01-inch Paddle Wheel Meter
t1.51.5-inch Turbine Meter
P1.51.5-inch Paddle Wheel Meter
P2.02-inch Paddle Wheel Meter
GenGeneric or Other Meter
Options
Page 7
MASTER PROGRAMMING MODE
When the Master Programming Mode is entered, all available
option setting displays may be viewed and set as needed.
Depending on current option settings, some parameters
cannot be viewed or set.
Setting the Time of Day
1. Press and hold either the Up or Down buttons until the
programming icon replaces the service icon and the
parameter display reads TD.
2. Adjust the displayed time with the Up and Down buttons.
3. When the desired time is set, press the Extra Cycle button
to resume normal operation. The unit will also return to
normal operation after 5 seconds if no buttons
are pressed.
Entering Master Programming Mode
Set the Time Of Day display to 12:01 PM. Press the Extra
Cycle button (to exit Setting Time of Day mode). Then
press and hold the Up and Down buttons together until the
programming icon replaces the service icon and the Display
Format screen appears.
Exiting Master Programming Mode
Press the Extra Cycle button to accept the displayed settings
and cycle to the next parameter. Press the Extra Cycle
button at the last parameter to save all settings and return
to normal operation. The control will automatically disregard
any programming changes and return to normal operation if
it is left in Master Programming mode for 5 minutes without
any keypad input.
Resets
2. Valve Type (Display Code VT)
Press the Extra Cycle button. Use this display to set the Valve
Type. The Valve Type setting specifies the type of cycle that the
valve follows during regeneration. Note that some valve types
require that the valve be built with specific subcomponents.
Ensure the valve is configured properly before changing the
Valve Type setting. This option setting is identified by “VT” in the
upper left hand corner of the screen. There are
six possible settings:
AbbreviationParameter
dF1bDownflow/Upflow, Single Backwash
dF2bDownflow Double Backwash
FltrFilter
UFbdUpflow Brine First
UFtrUpflow Filter
OthrOther
3. Control Type (Display Code CT)
Press the Extra Cycle button. Use this display to set the Control
Type. This specifies how the control determines when to trigger
a regeneration. For details on how the various options function,
refer to the “Timer Operation” section of this service manual.
This option setting is identified by “CT” in the upper left hand
corner of the screen. There are four possible settings:
Meter Delayed: Fd
Meter Immediate: FI
Time Clock: tc
Day of Week: dAY
Soft Reset: Press and hold the Extra Cycle and Down buttons
for 25 seconds while in normal Service mode. This resets all
parameters to the system default values, except the volume
remaining in meter immediate or meter delayed systems and
days since regeneration in the time clock system.
Master Reset: Hold the Extra Cycle button while powering up
the unit. This resets all of the parameters in the unit. Check
and verify the choices selected in Master Programming Mode.
1. Display Format (Display Code DF)
This is the first screen that appears when entering Master
Programming Mode. The Display Format setting specifies
the unit of measure that will be used for volume and how
the control will display the Time of Day. This option setting is
identified by “DF” in the upper left hand corner of the screen.
There are two possible settings:
Display Format SettingUnit of
Volume
GALU.S. Gallons12-Hour AM/PM
LtrLiters24-Hour
Time Display
4. Number of Tanks (Display Code NT)
Press the Extra Cycle button. Use this display to set the
Number of Tanks in your system. This option setting is identified
by “NT” in the upper left hand corner of the screen. There are
two possible settings:
Single Tank System: 1
Two-Tank System: 2
FLECK 5600SXT Downflow Service Manual • 7
Page 8
MASTER PROGRAMMING MODE
CONTINUED
5. Tank in Service (Display Code TS)
Press the Extra Cycle button. Use this display to set whether
tank one or tank two is in service. This option setting is
identified by “TS” in the upper left hand corner of the screen.
This parameter is only available if the number of tanks has
been set to 2. There are two possible settings:
Tank One in Service: U1
Tank Two in Service: U2
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 feedwater
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 hand corner
of the screen. Use the Up and Down buttons to adjust the value
from 0 to 50% as needed.
6. Unit Capacity (Display Code C)
Press the Extra Cycle button. Use this display to set the
Unit Capacity. This setting specifies the treatment capacity
of the system media. Enter the capacity of the media bed
in grains of hardness when configuring a softener system,
and in the desired volume capacity when configuring a filter
system. This option setting is identified by “C” in the upper
left hand corner of the screen. The Unit Capacity parameter
is only available if the control type has been set to one of the
metered options. Use the Up and Down buttons to adjust the
value as needed.
Range: 1-999,900 gallons (100-9,999,000 Liters)
7. Feedwater Hardness (Display Code H)
Press the Extra Cycle button. Use this display to set the
Feedwater Hardness. Enter the feedwater hardness in grains
per unit volume for softener systems, or 1 for filter systems.
This option setting is identified by “H” in the upper left hand
corner of the screen. The feedwater hardness parameter is
only available if the control type has been set to one of the
metered options. Use the Up and Down buttons to adjust the
value as needed.
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 feedwater hardness are changed.
This option setting is identified by “RC” in the upper left-hand
corner of the screen. Use the Up and Down buttons to adjust
the value as needed.
Range: 0-half the calculated capacity
11. 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 system 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 hand corner of the screen. Use the Up
and Down buttons to adjust the value as needed.
Range: 1-199 hardness
8. Reserve Selection (Display Code RS)
Press the Extra Cycle button. Use this display to set the
Safety Factor. Use this display to select the type of reserve
to be used in your system. This setting is identified by “RS”
in the upper left-hand corner of the screen. The reserve
selection parameter is only available if the control type
has been set to one of the metered options. There are two
possible settings.
FSSafety Factor
rcFixed Reserve Capacity
8 • FLECK 5600SXT Downflow Service Manual
Range: Off-99 days
12. 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
triggered regeneration. This option setting is identified by “RT”
in the upper left hand corner of the screen. Use the Up and
Down buttons to adjust the value as needed.
Page 9
MASTER PROGRAMMING MODE
CONTINUED
13. 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-hand corner of the screen. The abbreviations used
are listed below. If the system has been configured with the
“OTHER” valve type, the regeneration cycles will be identified
as R1, R2, R3, R4, R5, and R6. Each cycle step time can be set
from 0 to 199 minutes. Setting a cycle step time to 0 will cause
the control to skip that step during regeneration, but keeps
the following steps available. Use the Up and Down buttons
to adjust the value as needed. Press the Extra Cycle button to
accept the current setting and move to the next parameter.
Abbreviation Cycle Step
BDBrine Draw
BFBrine Fill
BWBackwash
RRRapid Rinse
SVService
Range: 0-199 minutes
16. Flow Meter Type (Display Code FM)
Press the Extra Cycle button. Use this display to set the type
of flow meter connected to the control. This option setting is
identified by “FM” in the upper left-hand corner of the screen.
Use the Up and Down buttons to select one of the seven
available settings.
t0.7Fleck 3/4-inch Turbine Meter
P0.7Fleck 3/4-inch Paddle Wheel Meter
t1.0Fleck 1-inch Turbine Meter
P1.0Fleck 1-inch Paddle Wheel Meter
t1.5Fleck 1-1/2 inch Turbine Meter
P1.5Fleck 1-1/2 inch Paddle Wheel Meter
P2.0Fleck 2-inch Paddle Wheel Meter
GEnGeneric/Other Meter
17. Meter Pulse Setting (Display Code K)
Press the Extra Cycle button. Use this display to specify the
meter pulse setting for a non-standard flow meter. This option
setting is identified by “K” in the upper left-hand corner of
the screen. Use the Up and Down buttons to enter the meter
constant in pulses per unit volume.
14. Day of Week Settings
Press the Extra Cycle button. Use this display to set the
regeneration schedule for a system configured as a Day of
Week control. The different days of the week are identified as
D1, D2, D3, D4, D5, D6, and D7 in the upper left-hand corner of
the display. Set the value to “ON” to schedule a regeneration or
“OFF” to skip regeneration for each day. Use the Up and Down
buttons to adjust the setting as needed. Press the Extra Cycle
button to accept the setting and move to the next day. Note that
the control requires at least one day to be set to “ON.” If all 7
days are set to “OFF”, the unit will return to Day One until one
or more days are set to “ON.”
15. Current Day (Display Code CD)
Press the Extra Cycle button. Use this display to set the current
day on systems that have been configured as Day of Week
controls. This setting is identified by “CD” in the upper lefthand corner of the screen. Use the Up and Down buttons to
select from Day 1 through Day 7.
18. End of Master Programming Mode
Press the Extra Cycle button to save all settings and exit
Master Programming Mode.
5600SXT Downflow Service Manual • 9
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Page 10
USER PROGRAMMING MODE
User Programming Mode Options
AbbreviationParameterDescription
DODay OverrideThe timer’s day override
setting
RTRegeneration
Time
HFeed Water
Hardness
RC or SFReserve
Capacity
CDCurrent DayThe current day of week
NOTE: Some items may not be shown depending on timer
configuration. The timer will discard any changes
and exit User Mode if any button is not pressed for
sixty seconds.
User Programming Mode Steps
1. Press the Up and Down buttons for five seconds while in
service, and the time of day is NOT set to 12:01 PM.
2. Use this display to adjust the Day Override. This option
setting is identified by “DO” in the upper left hand corner
of the screen.
3. Press the Extra Cycle button. Use this display to adjust
the Regeneration Time. This option setting is identified by
“RT” in the upper left hand corner of the screen.
The time of day that the
system will regenerate
(meter delayed, time
clock, and day-of-week
systems)
The hardness of the inlet
water - used to calculate
system capacity for
metered systems
The fixed reserve capacity
6. Press the Extra Cycle button. Use this display to set the
Current Day of the Week. This option setting is identified
by “CD” in the upper left hand corner of the screen.
7. Press the Extra Cycle button to end User
Programming Mode.
DIAGNOSTIC PROGRAMMING MODE
Diagnostic Programming Mode Options
AbbreviationParameterDescription
FRFlow RateDisplays the current outlet flow
rate
PFPeak Flow
Rate
HRHours in
Service
VUVolume
Used
RCReserve
Capacity
SVSoftware
Version
NOTE: Some items may not be shown depending on timer
configuration. The timer will exit Diagnostic Mode
after 60 seconds if no buttons are pressed. Press the
Extra Cycle button to exit Diagnostic Mode at any time.
Diagnostic Programming Mode Steps
1. Press the Up and Extra Cycle buttons for five seconds while
in service.
2. Use this display to view the current Flow Rate. This option
setting is identified by “FR” in the upper left hand corner of
the screen.
Displays the highest flow
rate measured since the last
regeneration
Displays the total hours that the
unit has been in service
Displays the total volume of
water treated by the unit
Displays the system’s reserve
capacity calculated from the
system capacity, feedwater
hardness, and safety factor
Displays the software version
installed on the controller
4. Press the Extra Cycle button. Use this display to adjust
the Feed Water Hardness. This option setting is identified
by “H” in the upper left hand corner of the screen.
Range: 1-199 hardness
5. Press the Extra Cycle button. Use this display to adjust
the Fixed Reserve Capacity. This option setting is
identified by “RC” or "SF" in the upper left-hand Corner
of the screen.
10 • FLECK
5600SXT Downflow Service Manual
3. Press the Up button. Use this display to view the Peak Flow
Rate since the last regeneration cycle. This option setting is
identified by “PF” in the upper left hand corner
of the screen.
Page 11
DIAGNOSTIC PROGRAMMING MODE
CONTINUED
4. Press the Up button. Use this display to view the Hours
in Service since the last regeneration cycle. This option
setting is identified by “HR” in the upper left hand corner
of the screen.
5. Press the Up button. Use this display to view the Volume
Used since the last regeneration cycle. This option setting
is identified by “VU” in the upper left hand corner
of the screen.
6. Press the Up button. Use this display to view the Reserve
Capacity. This option setting is identified by “RC” in the
upper left hand corner of the screen.
7. Press the Up button. Use this display to view the Software
Version. This option setting is identified by “SV” in the
upper left hand corner of the screen.
8. Press the Extra Cycle button to end Diagnostic
Programming Mode.
FLECK 5600SXT Downflow Service Manual • 11
Page 12
CONTROL VALVE ASSEMBLY
9
6
8
7
5
3
4
1
10
10
2
14
1
1
13
12
10
11
15
16
17
61500-56SE Rev A
12 • FLECK 5600SXT Downflow Service Manual
Page 13
CONTROL VALVE ASSEMBLY
CONTINUED
Item No. QTY Part No. Description
1 ..............1 ...... 61400-12 .........Valve Body Assy, 5600,
Hard water.By-pass valve is open.Close by-pass valve.
Unit used too much salt.Improper salt setting.Check salt usage and salt setting.
Loss of water pressure.Iron buildup in line to water conditioner.Clean line to water conditioner.
Loss of mineral through drain
line.
Iron in conditioned water.Fouled mineral bed.Check backwash, brine draw, and brine tank fill.
Excessive water in brine tank.Plugged drain line flow control.Clean flow control.
Softener fails to draw brine.Drain line flow control is plugged.Clean drain line flow control.
Control cycles continuously.Misadjusted, broken, or shorted switch.Determine if switch or timer is faulty and replace
Drain flows continuously.Valve is not programming correctly.Check timer program and positioning of control.
Electrical service to unit has been
interrupted
Timer is defective.Replace timer.
Power failure.Reset time of day.
No salt is in brine tank.Add salt to brine tank and maintain salt level above
Injector screen plugged.Clean injector screen.
Insufficient water flowing into brine tank.Check brine tank fill time and clean brine line flow
Hot water tank hardness.Repeated flushings of the hot water tank is
Leak at distributor tube.Make sure distributor tube is not cracked. Check
Internal valve leak.Replace seals and spacers and/or piston.
Excessive water in brine tank.See "Excessive water in brine tank".
Iron buildup in water conditioner.Clean control and add mineral cleaner to mineral
Inlet of control plugged due to foreign
material broken loose from pipes by recent
work done on plumbing system.
Air in water system.Assure that well system has proper air eliminator
Improperly sized drain line flow control.Check for proper drain rate.
Plugged injector system.Clean injector and screen.
Timer not cycling.Replace timer.
Foreign material in brine valve.Replace brine valve seat and clean valve.
Foreign material in brine line flow control.Clean brine line flow control.
Injector is plugged.Clean injector
Injector screen plugged.Clean screen.
Line pressure is too low.Increase line pressure to 20 psi
Internal control leakChange seals, spacers, and piston assembly.
Service adapter did not cycle.Check drive motor and switches.
Foreign material in control.Remove power head assembly and inspect bore.
Internal control leak.Replace seals and piston assembly.
Assure permanent electrical service (check fuse,
plug, pull chain, or switch)
water level.
control if plugged.
required.
o-ring and tube pilot.
bed. Increase frequency of regeneration.
Remove piston and clean control.
control. Check for dry well condition.
Increase frequency of regeneration. Increase
backwash time.
it, or replace complete power head.
Replace power head assembly if not positioning
properly.
Remove foreign material and check control in
various regeneration positions.
20 • FLECK 5600SXT Downflow Service Manual
Page 21
TROUBLESHOOTING
Error Codes
NOTE: Error codes appear on the In Service display.
CONTINUED
Error
Code
0Cam Sense
1Cycle Step
2Regen
3Memory
UDUpper Drive
Error TypeCauseReset and Recovery
Error
Error
Failure
Error
Sync
The valve drive took longer
than 6 minutes to advance to
the next regeneration position
The control experienced an
unexpected cycle input
The system has not
regenerated for more than 99
days (or 7 days if the Control
Type has been set to Day-of-
Week)
Control board memory failurePerform a Master Reset and reconfigure the system via Master
Power failure install
programming change
Unplug the unit and examine the powerhead. Verify that all cam
switches are connected to the circuit board and functioning
properly. Verify that the motor and drive train components are in
good condition and assembled properly. Check the valve and verify
that the piston travels freely. Replace/reassemble the various
components as necessary.
Plug the unit back in and observe its behavior. The unit should
cycle to the next valve position and stop. If the error re-occurs,
unplug the unit and contact technical support.
Unplug the unit and examine the powerhead. Verify that all cam
switches are connected to the circuit board and functioning
properly. Enter Master Programming mode and verify that the
valve type and system type are set correctly with regard to the
unit itself.
Step the unit through a manual regeneration and verify that it
functions correctly. If the error re-occurs unplug the unit and
contact technical support.
Perform a Manual Regeneration to reset the error code.
If the system is metered, verify that it is measuring flow by
running service water and watching for the flow indicator on the
display. If the unit does not measure flow, verify that the meter
cable is connected properly and that the meter is
functioning properly.
Enter a Master Programming Mode and verify that the unit is
configured properly. As appropriate for the valve configuration,
check that the correct system capacity has been selected, that the
day override is set properly, and that meter is identified correctly.
If the unit is configured as a Day-of-Week system, verify that at
least one day is set ON. Correct the settings as necessary.
Programming Mode. After reconfiguring the system, step the valve
through a manual regeneration. If the error re-occurs unplug the
unit and contact technical support.
Valve will automatically recover.
5600SXT Downflow Service Manual • 21
FLECK
Page 22
WATER CONDITIONER FLOW DIAGRAMS
Single Backwash Positions
Black Cycle Cam
(Part Number 17438)
Service PositionService Position
1. Backwash Position1. First Backwash Position
2. Brine/Slow Rinse Position2. Brine/Slow Rinse Position
3. Rapid Rinse Position3. Second Backwash Position
4. Brine Tank Fill Position4. Rapid Rinse Position
Service Position5. Brine Tank Fill Position
Service Position
Double Backwash Positions
Blue Cycle Cam
(Part Number 40609)
Service Position
Second Backwash Position (Double Backwash Units Only)
Rapid Rinse
Backwash Position
Brine/Slow Rinse Position
Brine Tank Fill Position
22 • FLECK 5600SXT Downflow Service Manual
Page 23
WIRING DIAGRAM
FLECK 5600SXT Downflow Service Manual • 23
Page 24
SERVICE INSTRUCTIONS
Replacing Brine Valve, Injectors and Screen
1. Turn off water supply to conditioner:
If the conditioner installation has a “three valve” bypass
system, first open the valve in the bypass line, then close
the valves at the conditioner inlet and outlet.
If the conditioner has an integral bypass valve, put it in the
Bypass position.
If there is only a shut-off valve near the conditioner inlet,
close it.
2. Relieve water pressure in the conditioner by stepping the
control into the Backwash position momentarily. Return
the control to the In Service position.
3. Unplug electrical cord from outlet.
4. Disconnect brine tube and drain line connections at the
injector body.
5. Remove the two injector body mounting screws. The
injector and brine module can now be removed from the
control valve. Remove and discard brine body O-rings.
Brine Valve Replacement
1. Pull brine valve from injector body. Also remove and
discard o-ring at bottom of brine valve hole.
2. Apply silicone lubricant to new o-ring and reinstall at
bottom of brine valve hole.
3. Apply silicone lubricant to o-ring on new valve assembly
and press into brine valve hole. Be sure shoulder on
bushing is flush with injector body.
Injectors/Screen Replacement
1. Remove injector cap and screen, discard o-ring. Unscrew
injector nozzle and throat from injector body.
2. Screw in new injector throat and nozzle, be sure they are
sealed tightly. Install a new screen.
3. Apply silicone lubricant to new o-ring and install around
oval extension on injector cap.
4. Apply silicone lubricant to three new O-rings and install
over three bosses on injector body.
5. Insert screws thorough injector cap and injector. Place
this assembly thorough hole in timer housing and into
mating holes in the valve body. Tighten screws.
6. Reconnect brine tube and drain line.
7. Return bypass or inlet valve to normal In Service position.
Water pressure automatically builds in the conditioner
NOTE: Be sure to shut off any bypass line.
8. Check for leaks at all seal areas. Check drain seal with
the control in the Backwash position.
9. Plug electrical cord into outlet.
10. Set Time Of Day and cycle the control valve manually
to assure proper function. Make sure control valve is
returned to the In Service position.
11. Be sure there is enough salt in the brine tank.
12. Start regeneration cycle manually if water is hard.
Timer Replacement
To replace timer refer to Replacing Brine Valve, Injectors and
Screen, steps 1–3.
1. Remove the control valve back cover. Remove the control
valve front cover. Disconnect the meter dome signal wire
from the front cover and feed it back through the control.
2. Remove screw and washer at drive yoke. Remove timer
mounting screws. The entire timer assembly then lifts
off easily.
3. Put new timer on top of valve. Be sure drive pin on main
gear engages slot in drive yoke.
4. Replace timer mounting screws. Replace screw and washer
at drive yoke. Replace meter signal wire.
5. Return bypass or inlet valve to normal In Service position.
Water pressure automatically builds in the conditioner.
To replace piston assembly refer to Replacing Brine Valve,
Injectors and Screen, steps 1–3.
1. Remove the control valve back cover. Remove the control
valve front cover. Disconnect the meter dome signal wire
from the front cover and feed it back through the control.
2. Remove screw and washer at drive yoke. Remove timer
mounting screws. The entire timer assembly will now lift off
easily. Remove end plug retainer plate.
3. Pull upward on end of piston yoke until assembly is out
of valve.
4. Inspect the inside of the valve to make sure that all spacers
and seals are in place, and that there is no foreign matter
that would interfere with the valve operation.
5. Take new piston assembly as furnished and push piston
into valve by means of the end plug. Twist yoke carefully
in a clockwise direction to properly align it with drive gear.
Replace end plug retainer plate.
6. Place timer on top of valve. Be sure drive pin on main gear
engages slot in drive yoke.
7. Replace timer mounting screws. Replace screw and washer
at drive yoke.
8. Return bypass or inlet valve to normal In Service position.
Water pressure automatically builds in the conditioner
To replace seals and spacers, refer to Replacing Brine Valve,
Injectors and Screen, steps 1–3.
1. Remove the control valve back cover. Remove the control
valve front cover. Disconnect the meter dome signal wire
from the front cover and feed it back through the control.
2. Remove screw and washer at drive yoke. Remove timer
mounting screws. The entire timer assembly will now lift
off easily. Remove end plug retainer plate.
3. Pull upward on end of piston rod yoke until assembly is
out of valve. Remove and replace seals and spacers.
4. Take piston assembly and push piston into valve by
means of the end plug. Twist yoke carefully in a clockwise
direction to properly align it with drive gear. Replace end
plug retainer plate.
5. Place timer on top of valve. Be sure drive pin on main
gear engages slot in drive yoke.
6. Replace timer mounting screws. Replace screw and
washer at drive yoke.
7. Return bypass or inlet valve to normal In Service position.
Water pressure automatically builds in the conditioner.