460i/460TC Control System
Operation and Maintenance Manual
460i ELECTRONIC DEMAND SYSTEM
The 460i electronic demand system is available as an option
on automatic controls for water conditioning equipment.
Retrotting of existing water treatment installations is easily
accomplished, and the cost is amortized over a short period of
time by the home owner in salt and water savings.
The two key components of the 460i electronic demand system
are the microprocessor, a miniature computer located on the
circuit board, and a water meter located at the valve outlet.
The ow of conditioned water through the meter generates
electrical impulses that tell the computer the amount of water
being used.
Every day, at 2:00 a.m., the past seven days’ water usage is
statistically averaged to anticipate the amount of water to be
used the next day. The computer then determines if the water
conditioner has enough remaining capacity to supply the next
day’s needs. If not, the unit will regenerate.
If the water usage pattern changes, the computer automatically
compensates for the change and regenerates only when
needed. This results in higher operating efciency and lower
salt usage than a conventional conditioner operating on a xed
regeneration schedule.
SPECIAL FEATURES 460i
High Water Usage
The 460i is programmed to react to a sudden increase in
water usage. If a day’s usage is more than double the current
average, the computer anticipates that a second day of
high usage is likely to occur. The high usage amount will be
used as the reserve when the 460i performs its regeneration
computation.
Low or No Water Usage
The 460i is programmed to recognize a day of very little or no
water usage as an abnormality. It will not use data from such a
day to compute the average usage. For example, if the family
is on vacation for a week, the prior average will be maintained.
When household activity resumes, the 460i will operate as if
the vacation had not occurred.
Design Reliability
Solid-state electronics assure many years of trouble-free
performance. And, the metering system has only one moving
part, that is the rotating turbine that measures water usage and
creates magnetic pulses that are continually counted by the
microprocessor to determine the need to regenerate.
Memory Retention
During a power outage, all of the data in the microprocessor’s
memory is stored in a special electronic chip called NOVRAM,
Nonvolatile Random Access Memory. This data includes the
time of day, water usage amounts, and the number of days
since the last regeneration. The NOVRAM will maintain the
data in its memory. When power is restored, the NOVRAM
returns the data to the microprocessor and operation resumes
as if an outage never occurred.
The time of day will be late by the length of the power
outage. Most power outages are less than one minute in
duration. Therefore, it may be months or years before the
time display would require resetting. If an outage of one or
more hours occurs, the time of day should be reset. No other
reprogramming is necessary.
Self-Adjusting Reserve
“Reserve” refers to the amount of soft water that may be
needed for the next 24 hours. The microprocessor calculates
how much soft water was used and adjusts the reserve
capacity accordingly at the end of each day. As a result, the
reserve is kept at a minimum for optimum economy. The
reserve amount is calculated by multiplying the average past
seven days’ usage by 1.20. Regeneration decisions are based
on the calculated reserve.
In the event of unusually high water usage (twice or more than
the current daily average), the high usage amount will be used
as the reserve when the computer performs its regeneration
computation at 2:00 a.m. This is done in anticipation of a
second day of very high usage.
1017948 Rev E FE11
PROGRAMMING THE 460i
Plug the wall mount transformer into a functioning electrical
outlet that is not controlled by a switch. Plug the transformer
plug into the transformer plug receptacle on the timer.
NOTE: If the included transformer cord is not long enough,
a 15-foot (4.6-m) extension is available or reference
page 5 for splicing directions.
Open the access door by pushing the raised tab on the door
toward the left while pulling the tab out (Figure 1).
Water Flow
PM Indicator
Indicator
Hour Time Display
Access Door
Raised
Tab
Jumper
Spare
Jumper
Capacity Setting
Move the upper jumper to the set of pins next to the word
CAPACITY (Figure 4). Press the black TIME SET Button until
the correct capacity value is displayed. The capacity range is 1
to 99 kilograins. Refer to the salt setting chart (Table 1).
Return the jumper to the top set of pins next to the word TIME
and replace the access door. The next three sets of pins are
used for factory testing and are not used in normal operation.
The jumper must NOT be left on any pins other than the
top pair next to the word TIME. Otherwise, the unit may not
function.
NOTE: A spare jumper is located on the bottom set of pins.
In the event that the hardness or capacity setting must be
changed, simply follow the appropriate steps described above.
Indicator
Knob
Time Set Button
Figure 1
Transformer Plug
Receptacle
Time of Day Setting
With the jumper on the set of pins next to the word TIME
(Figure 2), set the time of day to the closest hour by pressing
the black TIME SET button. PM hours are indicated by a light
next to the letters PM on the display window.
NOTE: The use of a small needle nose pliers or tweezers
will aid in moving the jumper.
NOTE: The unit is factory set to regenerate at 2:00 a.m.
If you prefer to have the unit regenerate at an earlier or later
time, simply set the current time of day accordingly. To have
the unit regenerate at 4:00 a.m., two hours later, set the clock
two hours earlier than the actual current time.
Hardness Setting
Move the upper jumper to the set of pins next to the word
HARDNESS (Figure 3). Press the black TIME SET button until
the correct hardness is displayed. The hardness range is from
1 to 99 grains per gallon.
To change water hardness stated in parts per million (PPM) to
grains per gallon (GPG), use this formula.
Parts per million = grains per gallon
17.1
Figure 2 Figure 3 Figure 4
2 • FE11 460i/460TC Control System
CONTROL FEATURES 460i
Time Display
The time of day to the nearest hour will continually appear
in the time display during normal conditioning operation. To
change the hour display, press the TIME SET BUTTON until
the present hour appears. The PM light will be on when the
time is between 12:00 noon and midnight. The light is off
during the AM hours.
Flow Indicator
The water ow indicator on the time display ashes whenever
service water is owing through the valve. This allows an easy
determination of proper meter operation.
Hardness and Capacity Settings
Once the hardness and capacity settings have been set,
the information cannot be lost due to a power outage;
reprogramming is not necessary.
Guest Cycle
An extra regeneration can be achieved at any time by pressing
the pointer knob. It will take a few minutes for the regeneration
to start and the unit will return to conditioned water in two
hours. This feature is benecial when you expect to use more
than the normal amount of water, for example: guest visits,
extra heavy laundry days, etc.
Manual Regeneration
Electricity is used only to run the timer and to rotate
the camshaft. All other functions are operated by water
pressure. Therefore, in the event of a power outage, all the
regeneration positions may be dialed manually by pressing
the pointer knob with a straight-blade screwdriver and turning
COUNTERCLOCKWISE.
• Backwash...14 minutes
• Brine and slow rinse...52 minutes
• Brine rell...10 minutes
• Fast rinse/rell...6 minutes
Do not exceed 10 minutes for the rell cycle as this will cause
excessive salt usage during the next regeneration and possibly
a salt residue in the conditioned water.
DO NOT advance the pointer knob directly to the conditioned
water position (6 o’clock) when manually advancing the
camshaft after a manual regeneration or when servicing the
conditioner. Advance it to just past the fast rinse position,
approximately 7 o’clock. The timer will then advance itself to
the conditioned water position where the internal switch will
turn the motor off. The internal switch will not be operated
and the motor will continue to run if advanced directly to the
conditioned water position.
If power fails during a conditioner regeneration, the cycle will
be completed normally when the power is restored.
460i/460TC Control System FE11 • 3
PROGRAMMING THE 460TC
Plug the wall-mount transformer into a functioning electrical
outlet that is not controlled by a switch. Plug the transformer
into the transformer plug receptacle on the control.
Open the access door by pushing the raised tab on the door
toward the left while pulling the tab out (Figure 5).
PM Indicator
460TC
Indicator
Knob
Water Flow
Indicator
Timer
Locking Pin
Time Set Button
Hour Time Display
DAYS
CLOCK
Transformer Plug
Receptacle
Figure 5
Access Door
Raised
Tab
Jumper
Spare
Jumper
Clock Setting
Move the jumper to the set of pins next to the word CLOCK
(Figure 8). Press the black TIME SET button until the desired
clock setting is displayed. The clock range is 0 to 1. Select 0
for the standard AM/PM clock or select 1 for a 24 hour clock.
Return the jumper to the top set of pins next to the word TIME
and replace the access door. The jumper must NOT be left
on any pins other than the top pair next to the word TIME.
Otherwise, the unit may show a blank display.
NOTE: A spare jumper is located on the bottom set of pins.
Memory Retention
During a power outage, all of the data in the microprocessor’s
memory is stored in a special electronic chip called NOVRAM,
Nonvolatile Random Access Memory. This data includes the
time of day, water usage amounts, and the number of days
since the last regeneration. The NOVRAM will maintain the
data in its memory. When power is restored, the NOVRAM
returns the data to the microprocessor and operation resumes
as if an outage never occurred.
The time of day will be late by the length of the power
outage. Most power outages are less than one minute in
duration. Therefore, it may be months or years before the
time display would require resetting. If an outage of one or
more hours occurs, the time of day should be reset. No other
reprogramming is necessary.
Time of Day Setting
With the jumper on the set of pins next to the word TIME
(Figure 6), set the time of day to the closest hour by pressing
the black TIME SET button. PM hours are indicated by a light
next to the letters PM on the display window.
NOTE: The use of a small needle-nose pliers will aid in
moving the jumper.
NOTE: The unit is factory set to regenerate at 2:00 a.m. If
you prefer to have the unit regenerate at an earlier
or later time, simply set the current time of day
accordingly (e.g., to have the unit regenerate at
4:00 a.m.—two hours later—set the clock two hours
earlier than the actual time of day).
NOTE: The Timer Locking Pin should always be horizontal
(Figure 5) during operation.
Days Setting
Move the jumper to the set of pins next to the word DAYS
(Figure 7). Press the black TIME SET button until the desired
number of days between regeneration is displayed. The range
is from 1 to 30 days.
TIME
DAYS
CLOCK
TIME
DAYS
CLOCK
TIME
DAYS
CLOCK
Figure 6 Figure 7 Figure 8
4 • FE11 460i/460TC Control System
ADJUSTMENT OF BRINE CONTROL
SPLICING THE LOW VOLTAGE
460i/460TC
The amount of salt placed into the regenerant storage tank
has nothing to do with the amount of salt used during the
regeneration cycle. Water will dissolve and absorb salt only
until it becomes saturated. A given amount of brine (salt
saturated water) contains a specic amount of salt.
The salt dial controls the amount of brine used during the
regeneration cycle, e.g., when set at 15 lbs. (6.8 Kg), the
amount of brine the conditioner will use for each cycle will
contain 15 lbs. (6.8 kg) of salt. Never let the amount of salt in
the brine tank be less than the amount required for the next
regeneration.
Refer to the salt setting table, Table 1, for proper salt settings.
To set the salt dial, insert a screwdriver into the pointer knob
(Figure 9) and move the pointer to the proper setting.
NOTE: To convert the salt settings from English to Metric,
divide by 2.2.
Example: 12 pound = 5.5 kg of salt.
2.2
Pointer Knob
TRANSFORMER CORD
If it is necessary to extend the length of the transformer cord,
an optional 15-foot (4.6-m) extension is available, or the cord
may be spliced as follows:
Strip insulation from wire 5/16 inch from wire end.
Insert stripped wire into barrel of connector and crimp. For best
results, crimp twice per wire as shown in Figure 10.
Splice connectors or extension wire are not supplied. They are
available at hardware or electrical stores.
Figure 9
Table 1 - Suggested Salt Dial Settings (Pounds of Salt) for
Various Size Softeners
Capacity
Setting
Kilograins
12 4.5 - - - - - - -
16 9. 5 - - - - - -
20 - 8.5 6 - - - - -
24 - 14 8.5 7 - - - -
30 - - 15 11 9 - - -
32 - - 18.5 12.5 10 9 - -
35 - - - 16 12 10 9 -
40 - - - 11.5* 17 14 12 -
48 - - - - 14* 10.5* 17 13
60 - - - - - - 15* 10.5*
*This setting requires use of “XS” (Extra Salt) cam and doubles the
amount of the setting.
.5 ft
.75
3
3
ft
Resin Bed Volume
1.0
1.25
3
ft
3
ft
1.5
ft
1.75
2.0
3
3
ft
2.5
3
ft
3
ft
Figure 10
460i/460TC Control System FE11 • 5
TROUBLESHOOTING
Your water conditioning system is designed and manufactured
for efcient, low maintenance service. However, if problems
do occur, this section provides a list of possible causes and
solutions. You can solve some problems yourself, such as
low salt in the salt storage tank or a blown household fuse.
However, some problems require installer or dealer assistance.
IMPORTANT: Service procedures that require the water
pressure to be removed from the system are
marked with a !. To remove water pressure
from the system, put the bypass valve or
three-valve bypass into the bypass position
and open the backwash drain valve (the
sixth valve back from the control) with a
screwdriver. Restore system water pressure
when the service work is completed.
Problem Cause Solution
Transformer cord unplugged. Connect power.
Clock does not display time of day.
Clock does not display correct time
of day.
Time display continues to advance. Defective time set switch. Replace timer.
Time display shows something
other than time of day.
No water ow display when water
is owing.
Control regenerates at wrong time
of day.
Timer stalled in regeneration cycle.
Continuous regeneration.
Camshaft does not stop at the end
of regeneration.
No electric power at outlet. Repair outlet or use working outlet.
Defective transformer. Replace transformer.
Defective circuit board. Replace timer.
Outlet operated by switch. Use outlet not controlled by switch.
Incorrect voltage or frequency (Hz).
Power outages. Reset clock.
Electrical interference.
Defective circuit board. Replace timer.
Bypass valve in bypass. Shift bypass valve to not-in-bypass position.
Meter probe disconnected or not fully connected to
meter housing.
Replace timer with one of correct voltage and
frequency (Hz).
Disconnect power to unit. Restore power and reset
time of day display.
Fully insert probe into meter housing.
!Remove meter housing, free up turbine and ush
Restricted meter turbine rotation due to foreign
matter in meter.
Defective meter probe. Replace timer.
Defective circuit board. Replace timer.
Power outages. Reset clock to correct time of day.
Clock set incorrectly. Reset clock to correct time of day.
Motor dead. Replace timer.
Motor runs backwards. Replace timer.
No electric power at outlet. Repair outlet or use working outlet.
Broken gear. Replace timer.
Defective switch. Replace timer.
Air leak in brine connections.
Binding of camshaft.
Water pressure greater than 125 psi during
regeneration.
Defective circuit board. Replace timer.
Broken switch activator on gear. Replace timer.
Defective switch. Replace timer.
with clean water. Do not disassemble turbine from
meter housing. Turbine shouls spin freely. If not
replace meter.!
Check all junction points and make appropriate
corrections.
Remove foreign object obstruction from valve discs
or camshaft.
!Install pressure regulator.!
6 • FE11 460i/460TC Control System
Problem Cause Solution
Control will not regenerate
automatically or when button is
pressed
Control will not regenerate
automatically but will regenerate
when button is pressed.
Run out of soft water between
regenerations.
Electric cord unplugged. Connect power.
No electric power at outlet. Repair outlet or use working outlet.
Defective motor. Replace timer.
Broken gear. Replace timer.
Binding in gear train. Replace timer.
Defective switch. Replace timer.
If water ow display is not operative, refer to "No
water ow display when water is owing".
Defective circuit board. Replace timer.
Incorrect hardness and capacity settings. Set to correct values. See Programming section.
Improper regeneration.
Fouled softener resin.
Incorrect salt setting.
Incorrect hardness or capacity settings. Set to correct values. See Programming section.
Water hardness has increased.
Same as "No water ow display when water is
owing".
Repeat regeneration, making certain that correct salt
dosage is used.
Use resin cleaner. (The use of resin cleaners in an
unvented enclosure is not recommended)
Set salt control to proper level. See Salt Setting
chart.
Set hardness to new value. See Programming
section.
! Remove meter housing, free up turbine and
Restricted meter turbine rotation due to foreign
material in meter housing.
Excessive water usage below 1/5 gallon per minute.
ush with clean water. DO NOT DISASSEMBLE
TURBINE FROM METER HOUSING. Turbine
should spin freely; if not, replace meter. !
!Repair leaky plumbing and/or xtures. !
460i/460TC Control System FE11 • 7
DISINFECTION OF WATER
CONDITIONERS
The materials of construction of the modern water conditioner
will not support bacterial growth nor will these materials
contaminate a water supply. However, the normal conditions
existing during shipping, storage and installation indicate the
advisability of disinfecting a conditioner after installation, before
the conditioner is used to treat potable water. In addition,
during normal use, a conditioner may become fouled with
organic matter, or in some cases, with bacteria from the water
supply.
Thus every conditioner should be disinfected after installation.
Some will require periodic disinfection during their normal life,
and in a few cases disinfection with every regeneration would
be recommended.
Depending upon the conditions of use, the style of conditioner,
the type of ion exchange, and the disinfectant available, a
choice can be made among the following methods.
Sodium or Calcium Hypochlorite
Application
These materials are satisfactory for use with polystyrene
resins, synthetic gel zeolite, greens and bentonites.
5.25% Sodium Hypochlorite
These solutions are available under trade names such as
Clorox, Linco, Bo Peep, White Sail and Eagle Brand Bleach. If
stronger solutions are used, such as those sold for commercial
laundries, adjust the dosage accordingly.
1. Dosage
A. Polystyrene resin; 1.2 uid ounce per cubic foot.
B. Non-resinous exchanger; 0.8 uid ounce per cubic foot.
2. Brine tank conditioners
A. Backwash the conditioner, and add the required amount
of hypochlorite solution to the brine well of the brine
tank. (The brine tank should have water in it to permit
the solution to be carried into the conditioner.)
B. Proceed with the normal regeneration.
Calcium Hypochlorite
Calcium hypochlorite, 70% available chlorine, is available
in several forms including tablets and granules. These solid
materials may be used directly, without dissolving before use.
1. Dosage
A. 2 grams (approximately 0.1 ounce) per cubic foot.
2. Brine tank conditioners
A. Backwash the conditioner and add the required amount
of hypochlorite to the brine well of the brine tank. (The
brine tank should have water in it to permit the chlorine
solution to be carried into the conditioner.)
B. Proceed with the normal regeneration.
© 2011 Pentair Residential Filtration, LLC 1017948 Rev E FE11
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