Antunes Filtration Technologies UFL-420 9700464 User manual

WATER FILTRATION
SYSTEM
UFL-420/440 Series
Owner’s Manual
P/N 1010873 Rev. C 05/05
MANUFACTURING
NUMBERS:
9700464
9700466
9700469
9700474
9700476
9700479
System Tested and Certified by NSF
International against NSF/ANSI
Standard 42 and 53 for the reduction of:
Standard No. 42: Aesthetic Effects
Nominal Particulate Reduction Class I
Standard No. 53: Health Effects
Cyst Reduction
Turbidity Reduction.

UFL-420/440 WATER FILTRATION SYSTEM
2P/N 1010873 Rev. C 05/05
General
Antunes Filtration Technologies, Division of A.J.
Antunes & Co., has partnered with companies from
around the globe to produce the UFL-Series water fil-
tration systems. The UFL-Series removes bacteria and
provides a substantial reduction of viruses that can
enter a typical water supply. This patented technology
is now available to you, sized for your particular appli-
cation. All filter configurations utilize NeoH capillary
membranes, providing the latest innovation in reusable
surface filtration technology.
This manual provides the safety, installation and
operating procedures for the UFL-Series water filtration
systems. We recommend that all information contained
in this manual be read prior to installing and operating
the unit.
Your UFL-Series unit is manufactured from the finest
materials available and is assembled to AFT’s strict
quality standards. This unit has been tested at the
factory to ensure dependable trouble-free operation.
OWNER INFORMATION
TABLE OF CONTENTS
IMPORTANT! Keep these instructions for future reference. If the unit changes owner-
ship, be sure this manual accompanies the equipment.
Warranty Information
Please read the full text of the Limited Warranty in this
manual.
If the unit arrives damaged, contact the carrier imme-
diately and file a damage claim with them. Save all
packing materials when filing a claim. Freight damage
claims are the responsibility of the purchaser and are
not covered under warranty.
The warranty does not extend to:
• Damages caused in shipment or damage as
result of improper use.
• Installation of electrical service.
• Normal maintenance as outlined in this manual.
• Malfunction resulting from improper maintenance.
• Damage from moisture leaking into electrical
components.
• Normal maintenance as outlined in this manual.
• Damage from tampering with, removal of, or
changing any preset control or safety device.
Owner Information .....................................................2
General ......................................................................2
Warranty Information .................................................2
Important Safety Information ....................................3
Service/Technical Assistance ....................................3
Electrical Cord & Plug Configurations .......................5
Electrical Ratings .......................................................5
Specifications .............................................................5
Dimensions ................................................................5
Performance Data Sheet ............................................7
Filter Cartridge Capacities .........................................7
System Capacities .....................................................7
Performance Claims for Percent Reduction ..............7
Installation ...................................................................8
Unpacking ..................................................................8
Equipment Setup .......................................................8
Locating and Mounting the System ...........................9
Filtration Process .................................................... 12
LED Display ............................................................ 12
Operation ...................................................................12
Starting the System ................................................ 12
Programming Timer During Startup ........................ 13
Setting the Flush Interval (Fi) ................................. 13
Setting Flush Duration (FD) .................................... 13
Manual Flushing ..................................................... 14
Checking the Timer Program .................................. 15
Changing the Cartridges ........................................ 15
Maintenance ..............................................................15
System Sanitization ................................................ 15
Troubleshooting .......................................................16
Wiring Diagram .........................................................17
Replacement Parts UFL-420/440 .............................19
LIMITED WARRANTY ...............................Back Cover

UFL-420/440 WATER FILTRATION SYSTEM
3
P/N 1010873 Rev. C 05/05
Purchased From:
Date of Purchase:
Model No.:
Serial No.:
Mfg. No.:
Throughout this manual, you will find the following
safety words and symbols that signify important safety
issues with regards to operating or maintaining the unit.
WARNING
GENERAL WARNING. Indicates informa-
tion important to the proper operation of
the equipment. Failure to observe may
result in damage to the equipment and/or
severe bodily injury or death.
WARNING
ELECTRICAL WARNING. Indicates infor-
mation relating to possible shock hazard.
Failure to observe may result in damage
to the equipment and/or severe bodily
injury or death.
CAUTION
GENERAL CAUTION. Indicates informa-
tion important to the proper operation of
the equipment. Failure to observe may
result in damage to the equipment.
IMPORTANT SAFETY INFORMATION
In addition to the warnings and cautions in this manual,
use the following guidelines for safe operation of the
unit.
• Read all instructions before using equipment.
• Install or locate the equipment only for its intend-
ed use as described in this manual. Do not use
corrosive chemicals in this equipment.
• Do not operate this equipment if it has a dam-
aged cord or plug; if it is not working properly, or
if it has been damaged or dropped.
• This equipment should be serviced by quali-
fied personnel only. Contact Antunes Filtration
Technologies for repair.
• Do not immerse cord or plug in water.
• Keep cord away from heated surfaces.
Service/Technical Assistance
If you experience any problems with the installation
or operation of your unit, contact Antunes Filtration
Technologies at 1-630-784-1000, or toll free in the
United States at 1-800-253-2991.
Fill in the information in the next column and have it
handy when calling for assistance. The serial number
is on the specification plate located on the unit.
OWNER INFORMATION (continued)
IMPORTANT
A.J. Antunes and Company reserves the right to change specifications and product
design without notice. Such revisions do not entitle the buyer to corresponding chang-
es, improvements, additions or replacements for previously purchased equipment.

UFL-420/440 WATER FILTRATION SYSTEM
4P/N 1010873 Rev. C 05/05
IMPORTANT SAFETY INFORMATION (continued)
The following warnings and cautions appear throughout
this manual and should be carefully observed.
• Disconnect the power source before performing
any service or
maintenance on the unit.
• All electrical connections must be in accordance
with local electrical codes and any other appli-
cable codes.
• WARNING ELECTRICAL SHOCK HAZARD.
FAILURE TO FOLLOW THESE INSTRUCTIONS
COULD RESULT IN SERIOUS INJURY OR
DEATH.
- Do not modify the power supply cord plug. If
it does not fit the outlet, have a proper outlet
installed by a qualified electrician.
- Do not use an extension cord with this appli-
ance.
• If the supply cord is damaged, it must be
replaced by the manufacturer or its service agent
or a similarly qualified person.
• This equipment is to be installed to comply with
the local plumbing code and any other applicable
code.
• Water pressure must not exceed the membrane
burst pressure of 100 psig (690 kPa). To reduce
water pressure, install a water pressure regulator
and set water pressure to suit application. Note
that trans membrane pressure (inlet water pres-
sure minus the permeate water pressure) must
be .5 - 2.5 bar (7 - 36 psi).

UFL-420/440 WATER FILTRATION SYSTEM
5
P/N 1010873 Rev. C 05/05
SPECIFICATIONS
Electrical Ratings Dimensions
CAUTION
All electrical connections must be in accordance
with local electrical codes and any other
applicable codes.
UFL-440
A
Width
B
Depth
C
Height
Operating
Weight
(w/water)
(lbs)
Min. Clearance
for Cartridge
Change above
or below unit
(inches)
11.5 in 6 in 47 in 42 lbs. 38 in
Figure 1. Dimensions
Electrical Cord & Plug Configurations
120 VAC
(P/N 0700665)
230 VAC
(P/N 0700666)
UFL-420
A
Width
B
Depth
C
Height
Operating
Weight
(w/water)
(lbs)
Min. Clearance
for Cartridge
Change above
or below unit
(inches)
11.5 in 6 in 28 in 28 lbs. 19 in
REPLACEMENT CARTRIDGE
UFL-420 L-420 (P/N 7000411)
UFL-440 L-440 (P/N 7000412)
C
B
A
Model &
Mfg. No.
Voltage Watts Amps Hertz
UFL-420
9700464
120 5 .04 50/60
UFL-420
9700466
230 5 .02 50/60
UFL-420
9700469
230 5 .02 50/60
UFL-440
9700474
120 5 .04 50/60
UFL-440
9700476
230 5 .02 50/60
UFL-440
9700479
230 5 .02 50/60
220 VAC
(P/N 0700682) China Only

UFL-420/440 WATER FILTRATION SYSTEM
6P/N 1010873 Rev. C 05/05
Drain
SPECIFICATIONS (continued)
Components
LED Display
Program
Button
Power
Transformer
Filter
Housing
Figure 2. Components
Permeate
Inlet
Flow
Controller
Mounting
Bracket

UFL-420/440 WATER FILTRATION SYSTEM
7
P/N 1010873 Rev. C 05/05
PERFORMANCE DATA SHEET
Filter Cartridge Capacities
Maximum Operating Pressure 100 psig (690 kPa)
Maximum Operating Temp. 104°F (40°C)
Maximum Trans Membrane Pressure 45 PSI (3.1 Bar)
pH Range 3-10
MWCO 100 kD
System Capacities
Series UFL-420 UFL-440
Liters per hour 1045 2089
Liters per minute 17 35
Gallons per hour 276 552
Gallons per minute 4.6 9.2
System Tested and Certified by NSF
International against NSF/ANSI
Standard 42 and 53 for the reduction of:
Standard No. 42: Aesthetic Effects
Nominal Particulate Reduction Class I
Standard No. 53: Health Effects
Cyst Reduction
Turbidity Reduction
This system has been tested according to NSF/ANSI
Standard 42 and 53 for reduction of the substances
listed below. The concentration of the indicated sub-
stances in water entering the system was reduced to a
concentration less than or equal to the permissible limit
for water leaving the system, as specified in NSF/ANSI
42 or 53. While testing was performed under standard
laboratory conditions, actual performance may vary.
Performance Claims for Percent Reduction
Substance Influent
Challenge
Concentration
Reduction
Requirement
cyst1minimum 50,000/L 99.95%
Turbidity 11+/1 NTU ≤ 0.5 NTU
Particulate Class I
Particles 0.5 to <
1µm
at least 10,000
particles /mL
85%
1based on the use of microspheres or Cryptosporium parvum oocysts

UFL-420/440 WATER FILTRATION SYSTEM
8P/N 1010873 Rev. C 05/05
Unpacking
1. Remove the system and all packing materials
from the shipping carton.
2. Remove all packing materials and protective cov-
erings from the system
3. Remove the information packet. To prevent any
delay in obtaining warranty coverage, fill out and
mail the warranty card.
NOTE: If any parts are damaged, contact Antunes
Filtration Technologies IMMEDIATELY at 1-800-253-
2991 or 1-630-784-1000.
Equipment Setup
GENERAL
When placing the unit into service, pay attention to the
following guidelines:
• Do not immerse cord or plug in water.
• Keep cord away from heated surfaces.
ELECTRICAL
Ensure that the line voltage corresponds to the stated
voltage on the units specification label. Make sure that
the plug on the power cord from the system and the
outlet match. For proper operation, and to ensure the
highest quality water from the system, make sure that
the system is not connected to a switched electrical
outlet.
PLUMBING
NOTE: This unit is designed to use tap water not
to exceed 100°F (38°C) or 100 psig (690 kPa).
The UFL-420 and UFL-440 systems use the following
connections (Figure 1):
• Water Inlet 1” NPT
• Permeate (Product Water) 1” NPT
• Drain 3/4” NPT
When making a plumbing connection to the system,
remember to use a back-up wrench on the supporting
plumbing. Always use a good quality, approved pipe
sealant or Teflon® tape on pipe threads. Be careful not
to get the pipe sealant inside the pipe when making the
connections.
DO NOT over tighten the connections. It is recom-
mended that plastic fittings be used when connecting to
the plastic connections of the system. This will reduce
the possibility of cracking the connections due to over-
tightening.
INSTALLATION
If soldered plumbing is used, do not apply heat to, or
near, the filtration system. The use of union (O-ring
seal) connections is highly recommended for ease of
installation and future servicing.
SUGGESTED TOOLS AND SUPPLIES FOR INSTALLATION
The following tools and supplies are suggested to make
the installation easier:
• Screwdriver
• Drill with bits
• Tape measure
• Two gallon bucket
• Pipe wrenches
• Adjustable wrenches
• Level
• Pipe dope or Teflon®
tape
• Fresh 5 1/4% liquid chlorine
bleach (such as Clorox®)
CAUTION
This equipment is to be installed to comply with
the basic plumbing code of the Building Officials
and Code Administrators, Inc. (BOCA) and the
Food Service Sanitation Manual of the Food and
Drug Administration (FDA).
CAUTION
Water pressure must not exceed a membrane
burst pressure of 100 psig (690 kPa). To reduce
water pressure, install a water pressure regulator
and set water pressure to suit application. Note
that the trans membrane pressure must be 0.5 -
2.5 bar (7 - 36 psi).
CAUTION
Flow Regulator Assemblies are NOT interchange-
able. Operating the system with the wrong Flow
Regulator or without a Flow Regulator can dam-
age the system, cause personal injury, and
will void the warranty!
FLOW REGULATOR ASSEMBLY
Your filtration system uses a water Flow Regulator
Assembly that controls the flow of water into the unit.
This assembly consists of a white threaded male con-
nector and a color-coded Flow Regulator (Figure 3).
The unit MUST be operated with the appropriate Flow
Regulator Assembly.
• UFL-420 Units: Use a GREEN and WHITE Flow
Regulator Assembly (5 gallons per minute).
• UFL-440 Units: Use a BLACK and WHITE Flow
Regulator Assembly (10 gallons per minute).

UFL-420/440 WATER FILTRATION SYSTEM
9
P/N 1010873 Rev. C 05/05
INSTALLATION (continued)
Locating and Mounting the System
Consider these points before mounting the system:
• Note the location of the water supply, drain, and
an appropriate electrical outlet when choosing a
mounting location.
• Remember to allow for access to the timer/
programmer controls.
• Do not mount the system above any electrical
equipment, or items that may be damaged if they
get wet.
• Install the system in a location that will allow for
future service access. Cartridge replacement will
be either through the top or bottom of the housing.
NOTE: Be sure to allow access to both the top and
bottom of the housing.
• Mount the system on a wall using appropriate
mounting hardware.
• Remember to consider the operating weight of
the system when choosing mounting hardware.
Depending on the type of wall the system is being
mounted to, wall reinforcement may be necessary.
Mount the filtration unit using the Mounting Bracket
(Figure 2) using 1/4” by 1” bolts or bolts of the metric
equivalent.
INLET WATER PLUMBING
It is recommended that the inlet water plumbing line be
1” NPT or larger. A shutoff valve (not supplied) should
be installed in the line leading to the system. The valve
should be mounted close to the system inlet and sized
properly for the inlet plumbing line.
It is also recommended that a “T” or Cross Fitting (with
cap or plug) be installed between the inlet valve and the
system Inlet. This fitting can be used for draining and
sanitizing the system and downstream plumbing.
The system should only be connected to the cold water
line.
To ensure that the highest quality water is produced
from the system, the plumbing leading to the filter
system must be flushed clear of all debris before the
system is hooked up. Before making the connection to
the inlet of the filter system, hold a bucket or other con-
tainer at the inlet water line and slowly open the inlet
water valved. Allow the pipe to flush until all debris is
removed.
PERMEATE LINE PLUMBING
To ensure the highest quality and safest water, it is
recommended that a check valve (to prevent backflow)
be installed in the water line after the permeate connec-
tion. This will help prevent possible contamination of
the filter system due to other equipment downstream.
The check valve (not supplied) should be mounted
close to the system outlet, and sized properly for the
plumbing line. Check with local codes for the proper
specification.
A shutoff valve (not supplied) should be installed in the
filtered water line leading from the system. The valve
should be mounted close to the system outlet and sized
Filter
Base
Flow Control
(supplied,
see inset)
Inlet Drain
Valve (not
Supplied)
Sanitation
Plug (not
supplied) Inlet Water
Valve (not
supplied)
Incoming
Water
Supply
Figure 3. Inlet Water Plumbing
Flow Controller
(Green for UFL-420,
Black for UFL-440)
Into
Filter
Base
INSET
Water Flow

UFL-420/440 WATER FILTRATION SYSTEM
10 P/N 1010873 Rev. C 05/05
CAUTION
Ingesting the protective solution may cause irrita-
tion of the gastrointestinal tract, colic, diarrhea, or
other similar symptoms
properly for the plumbing line. This valve will allow for
easier servicing and future cartridge change out.
DRAIN LINE PLUMBING
The drain line is used to flush away the particle buildup
when cleaning the filter. The drain line must be able
to support the flow rate when the system flushes. The
flow rate from the flush depends on the inlet water pres-
sure, inlet pipe size, and system selected. It is recom-
mended that the drain line be as large as, or larger
than, the inlet plumbing line. The drain line should be
as short as possible, sloping downward without kinks
or loops. Be sure that the drain used is not blocked or
restricted.
The filter system must be protected from possible back
contamination by the installation of an air gap between
the drain connection of the system and the drain
(Figure 4). This gap in the line, with no physical contact
between the system and sewer, prevents contamination
of the system in the event of a backed-up sewer.
NOTE: Make sure that the end of the drain line is
positioned and secured at least 2 inches above
the drain so that the water flow is directed into the
drain, without splashing.
INSTALL THE CARTRIDGE
Install the cartridge into the housing by following the
instructions on page 15 in the Changing the Cartridges
area of the Maintenance section in this manual. Make
sure that all O-rings are lubricated with a food-grade
silicone lubricate before assembling
FLUSHING THE SYSTEM
To ensure that the highest quality water is produced
from the system, the plumbing leading from the filter
system must be flushed clear of all debris after the
system is hooked up. After making the connection
to the outlet of the filter system, open a faucet or tap
closest to the filter system, then slowly open the inlet
water valve. Allow the pipe to flush until all debris is
removed.
The unit also must be flushed to remove air and the
shipping/storage solution. For maximum quality, the
permeate water produced during the flushing procedure
must be discarded. Direct this permeate water to drain.
INSTALLATION (continued)
1. Plug the power cord into the appropriate electrical
outlet. The unit will power on and the LED display
will display the following for about two seconds
each:
• 
•  followed by its time settings in seconds
•  and its time setting in minutes or hours.
The  and  sequence repeats for about 20 sec-
onds after which the switches to Flush Mode ()
before returning to the Flush Interval Mode ().
The time setting for  will be displayed and the
decimal point will flash in one second intervals.
2. Open the tap or faucet closest downstream to the
filter system.
3. Slowly open the inlet water valve and allow water
to enter the system.
4. Press and hold the Program button. After 6-7
seconds, the drain valve will open and  will
appear on the display.
5. Continue holding the Program button down for at
least 60 seconds to keep the drain valve open.
This flushes air out of the center of the hollow
fibers. The drain will remain open as long as the
Program button is pressed. Check to make sure
that the drain water is directed into the drain with-
out splashing.
6. Release the Program button. This closes the
drain valve. Water should continue to flow
through the system and out of the open tap.
Allow water to flow out of the tap for at least 15
minutes at maximum flow rate.
7. Close the tap and let the system stand without
water flow for 15 minutes to allow any trapped air
to come out of the hollow fibers. Check for leaks
at all fittings.
8. After 15 minutes without water flow, open the
tap for 5 minutes to allow any trapped air to be
flushed out. Close the tap.
9. Once again, press and hold the Program button
for at least 60 seconds to flush out any remaining
air from the system.
10. Release the Program button. Flushing is
complete.

UFL-420/440 WATER FILTRATION SYSTEM
11
P/N 1010873 Rev. C 05/05
Figure 4. Proper Draining
2” (5.1 cm)
minimum
2” (5.1 cm)
minimum
Floor
Drain
Secure
End
Drain Line
from System
Drain Line
from System
Secure
End
Drain
Standpipe
INSTALLATION (continued)
SANITIZING THE SYSTEM AND LINES
The plumbing must be sanitized to eliminate possible
contamination that may have occurred during the instal-
lation process. Chlorine bleach can be used to sanitize
the plumbing. The amount of bleach to use depends on
the system installed and the amount of plumbing down-
stream of the filter system. Generally, one ounce (30
ml) of bleach will be sufficient to sanitize the system.
1. Make sure that the system has been flushed of
air and debris as described in the Flushing and
Starting up the System section of this manual.
2. Open the tap closest downstream to the filter sys-
tem.
3. Close the inlet water valve and allow the system
to depressurize.
4. Place a bucket under the “T” or cross fitting at
the inlet connection to the system. Open the inlet
drain valve or unscrew the cap to drain the sys-
tem.
5. Press and hold the Program button to help drain
the system.
6. When the water flow out of the inlet fitting stops,
close the inlet drain valve and pour the liquid
bleach into the inlet connection fitting. Be careful
not to spill bleach onto clothing or skin. You may
want to add the bleach using a cup. Reattach the
cap on the fitting.
6. Slowly open the inlet water valve and allow water
to flow out of the tap until the smell of bleach is
present.
7. Close the tap and let the system stand with no
water flow for at least 15 minutes to allow the
bleach to sanitize the pipes.
8. After 15 minutes without water flow, open the tap
and flush until the presence of bleach is gone. All
other taps should be opened to flush any bleach
from the plumbing. Close the taps.
9. Press and hold the Program button for at least 60
seconds to complete the flushing process.
10. Sanitation is complete.
Program the timer following the procedure outlined in
the Operation section of this manual.

UFL-420/440 WATER FILTRATION SYSTEM
12 P/N 1010873 Rev. C 05/05
OPERATION
Figure 5. LED Display, Front Panel
PROGRAM
Starting the System
Power up the unit.
The LED read-out displays the following for about two
seconds each:
1. 
2.  followed by its time settings in seconds.
3.  and its time setting, in minutes or hours.
The  and  sequence repeats for 30 seconds
after which, the unit automatically returns to the
Flush Interval Mode (). The time setting for 
will be displayed and the decimal point will flash in
one second intervals.
NOTE: The timer can be programmed immediately
after start-up or while in Flush Interval Mode.
Filtration Process
Water filtration in the UFL Series is accomplished using
two modes:
• Flush Interval ( on the LED display)
• Flush Duration ( on LED display).
During the Flush Interval mode, water enters the inlet
and flows through the filter element before exiting the
Permeate outlet as usable product water. After a cer-
tain period of time, depending upon water quality, the
filter has to be cleaned. This is accomplished through
the Flush Duration Mode. During this mode, the drain
valve opens and flushes the membrane to remove
debris collected inside the membrane walls.
NOTE: Both the Flush Interval Mode and the Flush
Duration Mode can be automated by programming
the timer. During the Flush Interval Mode, the valve
is not powered in order to keep water filtering during
a power outage.
LED Display
 - Flush Interval Mode is the time between flushings
and is displayed in minutes or hours.
 - Flush Duration Mode is the amount of time used
to flush and remove debris from filter cartridge and
is displayed in seconds.
 - Manual Flush Mode operation, solenoid is
manually activated by the user.

UFL-420/440 WATER FILTRATION SYSTEM
13
P/N 1010873 Rev. C 05/05
OPERATION (continued)
Programming Timer During Startup
NOTE: Once the unit is powered up, the
LED display cycles through the default or current
settings: Flush Duration (Fd) and its setting will be
followed by Flush Interval (Fi) and its settings. At
any time during this sequence, which lasts approxi-
mately 30 seconds the unit can be programmed.
Setting the Flush Interval (Fi)
1. When Fi (Figure 5) is displayed, press and
release the Program button to view current set-
ting .
2. To make a change, press and hold the Program
button to scroll through settings - release the but-
ton at desired setting (Figure 5).
3. The unit automatically returns to the Flush
Interval Mode if the Program button is not
pressed within 10 seconds..
NOTE: Fi times are displayed in ten minute inter-
vals, after fifty minutes they are displayed in hours
(Table A).
PROGRAM
PROGRAM
55
Figure 9. Time Setting Fd Mode (55 Seconds)
PROGRAM
22
Figure 7. Time Setting Fi Mode (22 Hours)
Figure 8. LED Display for Flush Duration Mode
Table A. LED Display Settings
PROGRAM
Figure 6. LED Display for Flush Interval Mode
Setting Flush Duration (FD)
2. When Fd is displayed, press and release the
Program button to view current setting (Figure 8).
3. To make a change, press and hold the Program
button to scroll through settings - release the but-
ton at desired setting (Figure 9).
4. The unit automatically returns to the Flush
Interval Mode if the Program button is not
pressed within 10 seconds.
NOTE: Fd times are displayed in 5 second intervals
up to 60 seconds (Table A).
Fi - Flush Interval Mode Fd - Flush Duration Mode
 10 minutes  5 seconds
 50 Minutes  10 seconds
 1 Hour  15 Seconds
 12 Hours  30 Seconds
 24 hours  60 Seconds

UFL-420/440 WATER FILTRATION SYSTEM
14 P/N 1010873 Rev. C 05/05
OPERATION (continued)
PROGRAM
PROGRAM
3-
Programming Timer While Unit is in Flush
Interval (Fi) Mode
TO SET Fi - FLUSH INTERVAL MODE
NOTE: After power-up and cycling - Fi time setting
displays a flashing decimal point.
1. Press and hold the Program button for four
seconds. Release the button and the LED will
display  followed by its setting.
2. When  (Figure 10) is displayed, press and
release the Program button to view current set-
ting.
3. To make a change, press and hold the Program
button to scroll through settings - release the but-
ton at desired setting (Figure 11).
4. The unit automatically returns to the Flush
Interval Mode if the Program button is not
pressed within 10 seconds.
NOTE: Fi times are displayed in ten minute inter-
vals, after fifty minutes they are displayed in hours
TO SET FD - FLUSH DURATION MODE
1. Press and hold the Program button for four
seconds. Release the button, the LED displays
.
2. When  is displayed (Figure 12), press and
release button to view current setting .
3. To make a change, press and hold down start
button to scroll through settings - release button
at desired setting (Figure 13).
4. After ten seconds, if start button is not pressed
unit automatically returns to Flush Interval Mode.
NOTE: Fd times are displayed in 5 second intervals
up to 60 seconds (Table B).
PROGRAM
3-
PROGRAM
15
Figure 12. LED Display for Flush Duration
Figure 13. Time Display for Fd Mode (15 Seconds)
Table B. LED Display Settings
Figure 11. Time display for Fi Mode (30 Minutes)
Figure 10. Fi - LED Display for Flush Interval Mode
 10 minutes  5 seconds
 50 Minutes  10 seconds
 1 Hour  15 Seconds
 12 Hours  30 Seconds
 24 hours  60 Seconds
Fi - Flush Interval Mode Fd - Flush Duration Mode
Manual Flushing
NOTE: Manual flushing only works when unit is in
Flush Interval Mode (Fi).
While the unit is in Flush Interval Mode (decimal point
flashing), hold the Program button down for 6-7 sec-
onds until the LED displays  (Figure 14). Continue
holding the button down to keep the drain open. Drain
will remain open for as long as Program button is
depressed. ( will flash on LED.) Releasing the but-
ton closes the drain and puts the unit back into startup
mode. After ten seconds, if the Program button is not
pressed the unit automatically returns to the Flush Interval
Mode ().

UFL-420/440 WATER FILTRATION SYSTEM
15
P/N 1010873 Rev. C 05/05
PROGRAM
FL
Figure 14. Manual Flush
MAINTENANCE
The filtration system is designed to require very little
maintenance. To ensure that the water is of the highest
quality, occasionally some service is required.
Checking the Timer Program
During normal operation, the system displays the time
setting for the Flush Interval Mode () and the deci-
mal will flash in one second intervals. This is the time
between flushing, not a time of day setting.
Over time, it is possible that the time that the system
flushes occurs at a time of high water use. If this cre-
ates a problem, the timer can be reset by unplugging
the power cord, waiting for 5 seconds, and plugging the
power cord in again. The timer then begins timing from
the point power is restored to the system. Follow the
procedures within the Operation section of this manual
to check and set the timer settings.
Changing the Cartridges
While the filtration system is designed for long life,
eventually the cartridges will need to be replaced.
NOTE: Do NOT operate the system without the Flow
Regulator Assembly or the unit will be damaged,
physical injury may occur, and the warranty will be
voided.
1. Open the faucet or tap closest downstream to the
filtration system.
2. Close the inlet water valve and allow the system
to depressurize.
3. Place a bucket under the “T” or cross fitting at the
inlet connection to the system. Open the valve or
unscrew the cap to drain the system.
4. Press and hold the Start button to help drain the
system.
5. Close the inlet drain valve or reattach the cap on
the “T” fitting when the water flow stops.
6. Unplug the system.
7. Make sure there is enough room below the
housing to remove the cartridge.
8. Remove the snap ring on the end of the housing.
Grab the raised lug with your fingers or a pair of
pliers and pull towards the center of the end cap
and away. The ring should lift out of its groove.
9. The end cap, end cap O-ring, and cartridge
should easily drop down out of the housing. If
not, pull gently on the end cap to remove.
10. Inspect the cartridge O-rings and end cap O-ring
for nicks or cuts. Replace as needed.
11. Lubricate all O-rings with a food-grade silicone
lubricant. Apply a light coating of lubricant to the
inside center tube at both ends of the new car-
tridge..
12. Place the end cap O-ring on the end cap and
insert the end cap into the end of the new car-
tridge. Position the new cartridge and end cap
below the housing and gently insert into the hous-
ing. Press the end cap into position until the end
cap is fully seated and the snap ring groove is
visible.
13. Install the snap ring by guiding the non-lugged
end into the groove first, pushing outward and
working around the ring until it snaps into place.
NOTE: Make sure that the snap ring is fully seated
before turning the water on.
14. Follow the Flushing and Starting the System and
Sanitizing the System and Lines procedures in the
Installation section of this manual to complete the
cartridge change.
If the cartridge does not easily come out of the housing,
the opposite end cap can also be removed for assis-
tance during Step 8. Remember to inspect and reinstall
the O-rings at each end in the proper order.
System Sanitization
Over time and use, the plumbing downstream from the
system may require sanitization. It is recommended
that the system and downstream plumbing be sani-
tized at least once a year. When necessary, follow
the Sanitizing the System and Lines procedure in the
Installation section of this manual.

UFL-420/440 WATER FILTRATION SYSTEM
16 P/N 1010873 Rev. C 05/05
TROUBLESHOOTING
Problem Possible Cause Corrective Action
Unit does not have power. The power cord is not correctly
plugged in.
Plug power cord in correctly.
The Control Display is blank. The power cord is not correctly
plugged in.
Plug power cord in correctly.
Control Board is inoperable. Contact your maintenance person or
Authorized Service agency.
Transformer is inoperable.
No water comes out of the fil-
ter system
Inlet Valve closed Open the Inlet Valve
Inlet Strainer is plugged Clean/replace Inlet Strainer
End of the capillaries plugged Clean/replace Filter Cartridge
Low water flow/pressure out
of system
See above. See above.
The system may be in a flush cycle. Wait for the flush cycle to end.
Flushing program not set correctly
for water conditions.
Decrease the flush interval and increase
the flush duration (refer to the Operation
section of this manual).
Drain Valve is stuck open. Replace/rebuild the Drain Valve.
The inlet water pressure is too low. Boost the inlet water pressure/replace
pipes.
Water tastes bad. Storage/shipping solution not com-
pletely flushed out of system.
Flush system for a longer period of time.
Biological growth in pipes. Sanitize plumbing.
Water conditions changed. Consider installing taste and odor filtration.
Broken capillary in Filter Cartridge. Replace Filter Cartridge.
Flush runs continuously. Drain Valve stuck open. Replace/rebuild the Drain Valve.
Controller sending continuous signal
to valve.
Replace the controller.
Flush runs too long. Program duration set too long. Re-program the unit to flush for a shorter
duration of time.
Flush occurs at time of high
water usage.
The Flush Interval is set to interfere
with water use.
Change Flush Interval/reprogram time.
Unplug unit and plug in at a time of lower
water usage.
Water splashes at drain dur-
ing flush.
Drain line not positioned properly. Reposition the end of the drain line.
Water leaks at the ends of the
Filter Cartridge after changing
cartridges.
Cartridge end connections are not
tight enough.
Tighten with wrench if necessary.
O-rings not lubricated. Lubricate O-rings with food-grade lubricant.
O-rings are split, cut, or twisted Replace O-rings.
Water leaks from Permeate
port.
Permeate port is not tight enough Tighten, with wrench if necessary.
O-ring not lubricated. Lubricate O-ring with food-grade lubricant.
O-ring split, cut, or twisted. Replace O-ring.
Water leaks from system fit-
ting or connection.
Fitting broken or loose. Retighten or replace the fitting.
Not enough pipe thread sealant
used.
Redo the fitting with the proper amount of
sealant.

UFL-420/440 WATER FILTRATION SYSTEM
17
P/N 1010873 Rev. C 05/05
WIRING DIAGRAM
BLK
BLK/WHT
14 GA. AWM-105°C
22 GA. AWM-105°C
NOTE: ALL WIRES TO BE 16 GA. AWM-105°C
UNLESS OTHERWISE SPECIFIED.
WHT
TERMINAL
BLOCK
POWER
CORD
BLK
SOLENOID
VALVE
T2
T3
T4 BLK
CONTROL
BOARD
RED
W/24V XFORMER

UFL-420/440 WATER FILTRATION SYSTEM
18 P/N 1010873 Rev. C 05/05
REPLACEMENT PARTS UFL-420/440 (continued)
28
3
4
1
6
7
8
9
27
26
23
20
15
16
13
14
19
21
22
2
11
10
12
NOTE: Item 12 is GREEN and rated
at 5 GPM for UFL-420 units. For UFL-440
units, it is BLACK and rated at 10 GPM.
WARNING: Use only a 5 GPM Flow
Regulator with UFL-420 units and a
10 GPM Flow Regulator for UFL-440 units.
Use of the wrong Flow Regulator will void
the system warranty.
5
5
25
24
4
28
17
Replacement Parts can be purchased from an authorized dealer. Contact
Antunes Filtration Technologies at 1-630-754-1000 or toll free in the
United States at 1-800-253-2991

UFL-420/440 WATER FILTRATION SYSTEM
19
P/N 1010873 Rev. C 05/05
REPLACEMENT PARTS UFL-420/440
1 2190146 Union Assembly 1” NPT 1
2 2190144 Nipple, Hex 3/4” NPT x 1 1/2” LG 1
3 2180181 Ring, Lock 2
4 7000442 End Cap Kit Incl. 1 of P/N 7000413, 1
1 of P/N 2180181, and
1 of P/N 2180200
5 7000413 O-ring Replacement Kit 1
Incl. 4 of PN 0200236, 2 of
PN 0200235, and 1 of PN 2140153
6 7000411 Cartridge Replacement Kit 1
UFL-420 Only (Includes O-ring
Replacement Kit P/N 7000413)
7000412 Cartridge Replacement Kit 1
UFL-440 Only (Includes O-ring
Replacement Kit P/N 7000413)
7 0504065 Clamp, 4” Filter 1
8 308P157 Screw, Tap #8-32 x 3/8” ** 12
9 2180201 Housing, Filter UFL-420 1
2180202 Housing, Filter UFL-440 1
10 4040172 Solenoid Valve 120V 24 VAC 1
NC 3/4” NPT
11 7000441 Solenoid Valve/Coil Kit 24 VAC 1
12 0021338 Flow Regulator Assembly *** 1
5 GPM - UFL-420 (Green)
0021337 Flow Regulator Assembly *** 1
10 GPM - UFL-440 (Black)
13 0504033 Bracket, Mounting 1
14 0400334 Strain Relief - Small 1
15 040P333 Nut, Lock ** 1
16 0503983 Control Housing 1
17 0700665 Power Supply, 120 V (5-20P) 1
0700666 Power Supply, 230 V (CEE 7/7) 1
0700682 Power Supply, 220 V (HKH-01) 1
China Only
19 4060355 Terminal Block, 3-Pole 1
20 306P101 Nut, Hex #6-32 ** 2
21 308P143 Nut, Hex KEPS #8-32** 2
22 304P105 Nut, Hex KEPS #4-40 ** 4
23 7000440 Timer, 24 VAC 1
24 7000359 Cover Gasket Kit 1
25 7000362 Control Housing Cover Kit 1
Incl. Items 23 and 25
26 1001116 Label, Timer 1
27 2190148 Plug, Pipe 1” NPT 1
28 2190147 Nipple, Hex 1” NPT 2
33* 2140153 Lubricant, High-vacuum grease 1
34* 0700636 Wire Set 1
35* 0700637 Wire Harness 1
36* 1001143 Label, Wiring Diagram 1
37* 1001133 Label, Inlet ** 1
38* 1001135 Label, Drain ** 1
39* 1001134 Label, Permeate ** 1
40* 1010873 Owner’s Manual 1
Item Part Description Qty.
No.
Item Part Description Qty.
No.
* Not Shown
** Only available in packages of 10.
*** WARNING: Use only a 5 GPM Flow Regulator
with UFL-420 units and a 10 GPM Flow Regulator
for UFL-420 units. Use of the wrong Flow Regulator
will void the system warranty.
Replacement Parts can be purchased from an authorized dealer. Contact Antunes
Filtration Technologies at 1-630-754-1000 or toll free in the United States at 1-800-253-2991

LIMITED WARRANTY
Equipment manufactured by the Antunes Filtration Technologies Division of A.J. Antunes & Co. has been constructed
of the finest materials available and manufactured to high quality standards. These units are warranted to be free from
mechanical and electrical defects for a period of one year from date of purchase or 18 months from date of shipment
from factory, whichever occurs first, under normal use and service, and when installed in accordance with manufacturer’s
recommendations. The ultra filtration membrane cartridge is warranted under the same terms and conditions on a pro-
rated basis for 24 months from start up or 27 months from date of shipment, which ever occurs first.
To insure continued proper operation of the units, follow the maintenance procedure outlined in the Owner’s Manual.
1. This warranty does not cover cost of installation, defects caused by improper storage or handling prior to placing of the equip-
ment. This warranty does not include overtime charges or work done by unauthorized service agencies or personnel. This
warranty does not cover normal maintenance, calibration, or regular adjustments as specified in operating and maintenance
instructions of this manual, and/or labor involved in moving adjacent objects to gain access to the Equipment. This warranty
does not pay travel, mileage, or any other charges for an authorized service agency to reach the equipment loca-
tion.
2. Antunes Filtration Technologies reserves the right to make changes in design or add any improvements on any product. The
right is always reserved to modify equipment because of factors beyond our control and government regulations. Changes
to update equipment do not constitute a warranty charge.
3. If shipment is damaged in transit, the purchaser should make a claim directly upon the carrier. Careful inspection should
be made of the shipment as soon as it arrives and visible damage should be noted upon the carrier’s receipt. Damage
should be reported to the carrier. This damage is not covered under this warranty.
4. Warranty charges do not include freight or foreign, excise, municipal or other sales or use taxes. All such freight and taxes
are the responsibility of the purchaser.
5. THIS WARRANTY IS EXCLUSIVE AND IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING
ANY IMPLIED WARRANTY OR MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, EACH OF WHICH IS
HEREBY EXPRESSLY DISCLAIMED. THE REMEDIES DESCRIBED ABOVE ARE EXCLUSIVE AND IN NO EVENT SHALL
ANTUNES FILTRATION TECHNOLOGIES BE LIABLE FOR SPECIAL CONSEQUENTIAL OR INCIDENTAL DAMAGES FOR
THE BREACH OR DELAY IN PERFORMANCE OF THIS WARRANTY.
A.J. Antunes & Co.
Headquarters/Manufacturing
180 Kehoe Boulevard
Carol Stream, Illinois 60188 USA
Phone [phone]
Toll Free [phone]
Fax: [phone]
Antunes Equipment
Manufacturing (Suzhou) Ltd.,
9 Hou Ju Road, Building #24,
S&T Park, SND
Suzhou, Jiangsu, China 215011
Phone: [phone]
Fax: [phone]
www.ajantunes.com