MAYTAG Whole Home Water Filtration System
Owner’s Manual
Models:
MWF4100AWS
MWF4200AWS
MWF4300AWS
Your Operation and Maintenance Guide
Table of Contents
Dealer and System Information .................................................................. 2
IMPORTANT! READ THIS FIRST ........................................ 3
Safety Instructions....................................................................................... 3
Certifications and Testing........................................................................... 7
Service .......................................................................................................... 9
Legal Disclaimer .......................................................................................... 9
Trademarks................................................................................................. 10
System Description ................................................................................... 11
Replacement Parts..................................................................................... 11
Startup of a new MAYTAG Whole Home Water Filtration System......... 12
Sanitizing Your Household Distribution System .................................... 12
Maintenance Schedule .............................................................................. 12
Replacing/Cleaning the Internal Prefilter and Cleaning the System ..... 15
Replacing the External Sediment Prefilter Cartridge ............................. 19
Setting the Controller ................................................................................ 22
Choosing a Controller Program ............................................................... 23
Winterization Procedure............................................................................ 24
Annual Maintenance Checklist ................................................................. 32
Cleaning the Stainless Steel Casing ........................................................ 32
Frequently Asked Questions .................................................................... 32
Troubleshooting......................................................................................... 37
MAYTAG Whole Home Water Filtration System Operational
Specifications............................................................................................. 39
MAYTAG WHOLE HOME WATER FILTRATION SYSTEM Limited Warranty
..................................................................................................................... 40
Important: see safety warnings and cautions inside.
MAYTAG Whole Home Water Filtration System Owners Manual MA1-5
November 2003
1
Thank you…
By purchasing the MAYTAG Whole Home Water Filtration System you have taken the first step
in providing safer, great tasting water for the entire home.
The MAYTAG Whole Home Water Filtration System is an advanced Point of Entry (POE) water
filtration system that uses ultrafilter membrane technology to provide a physical barrier to
bacteria, parasites, viruses and particles. The System requires minimal maintenance and will
provide you with years of cleaner, safer, better tasting water. Simply follow the information
found in this manual and schedule an annual maintenance visit by your MAYTAG Whole Home
Water Filtration System Qualified Dealer.
The MAYTAG Whole Home Water Filtration System should only be installed where the System
and the installation complies with provincial or state laws and local laws and regulations. The
MAYTAG Whole Home Water Filtration System conforms to ANSI/NSF 42 and 53 for the
specific performance claims as verified and substantiated by test data. The System should only be
used to filter cold water (less than 38°C (100 F)) and must be protected from freezing.
Dealer and System Information
MAYTAG Qualified Dealer
Model Number
Qualified Technician
Phone Number (MAYTAG Customer Care) 1-800-688-2002____________________
Emergency Customer Service Number
Membrane Module Serial Number
Backpulse Tank Serial Number
Backpulse Tank Pressure Setpoint
Installation Date
Maytag Canada
4151 North Service Road
Burlington, Ontario
L7R 4A8
1-800-688-2002
MAYTAG Whole Home Water Filtration System Owners Manual MA1-5
November 2003
2
IMPORTANT! READ THIS FIRST
•
•
•
•
•
•
•
Read this manual carefully prior to use.
Permanently locate the manual near the water filtration system.
Periodic checks of the MAYTAG Whole Home Water Filtration System are required to ensure safe and
efficient operation.
Annual maintenance by a MAYTAG Services Qualified Service Technician is required to validate the
limited warranty.
Cost of annual maintenance is the Owner’s responsibility.
Many of the tools referenced are available through your MAYTAG Qualified Dealer.
Maintenance on the MAYTAG Whole Home Water Filtration System will mean that your house will not
have water during the maintenance procedure. If water is required for cleaning a component or any
other use during the maintenance procedure, be sure to fill enough suitable water containers before
beginning the maintenance procedure.
Using this Manual …
The following typographical conventions are used in this manual:
Start by reviewing these important safety alert symbols. These safety symbols will alert you to
the possibility of serious injury, death, or property damage.
Italics are used for emphasis.
Danger notices indicate the potential for severe injury, illness, death and/or property
damage (ie. electrocution). Read and follow all instructions.
Warnings indicate actions that could cause damage to equipment, water contamination,
severe injury, illness, death and/or property damage.
Safety Instructions
The MAYTAG Whole Home Water Filtration System has been designed and tested to offer
reliable service, provided it is installed by a MAYTAG Services Qualified Service Technician
and is operated, maintained, and tested in strict accordance with the safety instructions contained
in this manual.
MAYTAG Whole Home Water Filtration System Owners Manual MA1-5
November 2003
3
Operational Safety
•
The MAYTAG Whole Home Water Filtration System is under pressure during use and
precautions must be taken.
•
This device is designed to operate on a 120VAC/15 Amp/ 60Hz line. Do not modify the plug
on the power cord. If the plug does not fit the electrical outlet, have a proper outlet installed
by a qualified electrician.
•
To avoid System damage: Ensure that a Stainless Steel Prefilter or Carbon Prefilter is in place
during operation of the System. In the absence of an Internal Prefilter, abrasive damage to the
System may occur. A damaged System may permit contaminated water to enter the household
distribution system causing illness. Irreversible and premature fouling of the System may also
occur resulting in System replacement at the owner’s expense.
Service and Maintenance Safety
•
To avoid electric shock: Disconnect the AC power from the MAYTAG Whole Home Water
Filtration System before servicing the controller; do not remove the controller cover while
System is in use. Only MAYTAG Services Qualified Service Technicians should attempt to
service the controller.
•
Important: The MAYTAG Whole Home Water Filtration System must be kept in a wetted
condition. Once installed or during service and maintenance activities, do not allow the
System to sit completely drained for extended periods (greater than 12 hours). Failure to do
so may damage the System and cause contaminated water to enter the household.
MAYTAG Whole Home Water Filtration System Owners Manual MA1-5
November 2003
4
The MAYTAG Whole Home Water Filtration System must be kept wet at all times after
installation. Failure to do so may cause System to dry and become damaged, which may
lead to personal injury, and/or physical damage and will void any warranty.
Winter Storage
•
The MAYTAG Whole Home Water Filtration System will be damaged if frozen. The System
must be winterized according to the Winterization Procedure by a MAYTAG Services
Qualified Service Technician.
The MAYTAG Whole Home Water Filtration System must be winterized prior to
temperatures falling below 0°C (32 F). Failure to do so may cause System to dry, freeze
and become damaged, which may lead to personal injury, and/or physical damage and
will void any warranty.
Other Safety Precautions
•
•
•
•
Do not plug in the Controller transformer if there is water on electrical wiring or the power
supply.
Always shut off water flow and release water pressure before cleaning or maintaining the
System.
The System is intended for indoor use only. The power supply and controller must not be
exposed to weather elements.
A MAYTAG Services Qualified Service Technician must perform an Integrity Test at least
once a year.
The MAYTAG Whole Home Water Filtration System must be;
• tested annually using the integrity test.
• operated with either a Carbon or Stainless Steel Prefilter.
Failure to do so may cause System to become damaged, which may lead to personal
injury, and/or physical damage and will void any warranty.
Emergency Bypass Safety (if installed where required by local plumbing codes)
Some Systems will have a bypass valve installed. If a bypass valve is installed, your System
piping will look like Photo 1. Follow these safety precautions if your System has been installed
with an emergency bypass valve.
MAYTAG Whole Home Water Filtration System Owners Manual MA1-5
November 2003
5
Bypassing the MAYTAG Whole Home Water Filtration System will result in unfiltered
water entering the household distribution system. This water may be biologically unsafe
and drinking this water could result in illness or death. Exercise caution in bypassing the
System. Do not drink water from the System while the System is in bypass mode.
If the System has been operated in bypass mode and if water is being drawn from a well
or surface water source, the household distribution system should be re-disinfected once
returned to filtration mode.
If the System is in bypass mode, the controller must be unplugged. Failure to do so
may cause System to dry and become damaged, which may lead to personal injury,
and/or physical damage and will void any warranty.
Photo 1.
A bypass system is not required for proper operation of the MAYTAG Whole Home Water
Filtration System, however some local plumbing codes may require a bypass. If the System is to
be equipped with a bypass, the procedure below may be followed to provide water in an
emergency or System malfunction.1
Photo 2a. Ball valve: open
position
1
Photo 2b: Ball valve:
closed position
System malfunction would include a possible water leak or failed integrity test.
MAYTAG Whole Home Water Filtration System Owners Manual MA1-5
November 2003
6
Bypass Procedure
1. Close the Inlet and Outlet ball valves (turn handles clockwise). Ball valves are in the
closed position when the handle is positioned perpendicular to the water pipe. (See
Photo 2a and 2b on previous page.)
2. Open Bypass Valve (turn handle counter-clockwise).
3. Unplug controller.
4. To return to filtered water service, in the order listed;
•
close bypass valve (turn handle clockwise)
•
open inlet and outlet ball valves (turn handles counter-clockwise)
•
plug in controller
Certifications and Testing
NSF (National Sanitation Foundation) Testing and Certification
NSF International is the world’s leading testing and certification laboratory for water
treatment products.
Models MWF4200AWS and MWF4300AWS:
System Tested and Certified by NSF International
against NSF/ANSI 42 and 53 for:
•Cyst Reduction
•Turbidity Reduction
•Particulate Reduction - Class 1
MAYTAG Whole Home Water Filtration System Owners Manual MA1-5
November 2003
7
Model MWF4100AWS:
System Tested and Certified by NSF International against
NSF/ANSI 42 and 53 for:
•Cyst Reduction
•Turbidity Reduction
•Particulate Reduction - Class 1
•Chlorine, Taste and Odour Reduction
Chlorine Reduction Capacity Rating:
396,000/105,000 (litres/gallons)
Do not use the MWF4100AWS, with activated carbon filter
option, with water that is microbiologically unsafe or of
unknown quality unless adequate disinfection before or after the
System. Models with activated carbon filter option certified for
cyst reduction may be used on disinfected waters that may
contain filterable cysts.
The MAYTAG Whole Home Water Filtration System and MAYTAG Whole Home Water Filtration System with Activated Carbon Prefilter
should only be installed where the System and the installation complies with state, provincial and local laws and regulations. The MAYTAG
Whole Home Water Filtration System and MAYTAG Whole Home Water Filtration System with Activated Carbon Prefilter should only be used
to filter water that is cold. The MAYTAG Whole Home Water Filtration System and MAYTAG Whole Home Water Filtration System with
Activated Carbon Prefilter conforms with ANSI/NSF 42/53 for the specific performance claims as verified and substantiated by test data.
The MAYTAG Whole Home Water Filtration System must be installed by a
MAYTAG Services Qualified Service Technician and properly maintained in
accordance with the Owner’s Manual. Failure to properly maintain the System will
compromise performance and/or result in a failure to control water quality.
The MAYTAG Whole Home Water Filtration System is not intended for the treatment
of water that has an obvious contamination source (such as sewage or wastewater).
Biofilm and pathogens in home piping systems could shed into water after it has been
filtered through the MAYTAG Whole Home Water Filtration System. Exposure to
microorganisms may also occur during daily activities.
MAYTAG Whole Home Water Filtration System Owners Manual MA1-5
November 2003
8
Independent Laboratory Testing Results – Biovir Laboratories
The following information is a summary of the MAYTAG Whole Home Water Filtration System
and MAYTAG Whole Home Water Filtration System with Activated Carbon Prefilter
Independent Laboratory Testing results.
Independently Tested By BioVir Laboratories, Inc. ,
Benicia, California
The MAYTAG Whole Home Water Filtration System has been independently tested by BioVir Laboratories, a California
Department of Health (CDH) Approved Laboratory. The test results were:
Bacteria Reduction* - greater than 99.99999%
Virus Reduction** - greater than 99.7%
* Tested with Echerichia coli bacteria
** Tested with Polio virus
Service
All service and maintenance is to be performed by a MAYTAG Services Qualified Service
Technician.
Should service be required during or after the warranty period, or should you have any questions
regarding how to use your MAYTAG Whole Home Water Filtration System, please call
MAYTAG Customer Care at 1-800-688-2002.
Legal Disclaimer
This manual attempts to outline some of the basic principles of household water collection,
treatment and discharge and some of the features of the MAYTAG Whole Home Water
Filtration System (the “System”). It is not intended to be a definitive dissertation on the
principles set out above and is provided as a reference guide to homeowners. Any other reliance
is expressly excluded herein.
The MAYTAG Whole Home Water Filtration System must be installed by a MAYTAG Services
Qualified Service Technician and properly maintained in accordance with the Operations and the
Owner’s Manual. Failure to properly maintain the System will compromise performance and/or
result in the failure to control water quality.
See tables for Certifications and Laboratory test information.
To reduce the risk of severe injury, illness, death and/or property damage, read and
follow all instructions. Use only MAYTAG authorized parts where required to repair
and service the MAYTAG Whole Home Water Filtration System.
MAYTAG Whole Home Water Filtration System Owners Manual MA1-5
November 2003
9
All MAYTAG Whole Home Water Filtration Products must be installed in accordance
with all local building and plumbing codes.
The MAYTAG Whole Home Water Filtration System must be protected against freezing
and less than 0°C (32 F) temperatures. Failure to do so may cause System to become
damaged, which may lead to personal injury and/or physical damage.
The MAYTAG Whole Home Water Filtration System must be installed on cold-water
distribution systems only. Failure to do so may cause System damage, which may lead to
personal injury and/or physical damage.
The MAYTAG Whole Home Water Filtration System must be filled with water at all
times after installation. Failure to do so may cause System to dry and become damaged,
which may lead to personal injury and/or physical damage.
Trademarks
The following are registered trademarks:
ZENON Environmental Inc.
MAYTAG Whole Home Water Filtration System Owners Manual MA1-5
November 2003
10
System Description
Figure 1. MAYTAG Whole Home Water Filtration System, components and dimensions
AIR VENT
CAP
188cm
(74”)
MINIMUM
CLEARANCE
REQUIRED
PREFILTER HOUSING
INLET ¾” FNPT
163cm
(64”)
MEMBRANE
MODULE
119cm
(46.75”)
DRAIN ¾” FNPT
LOCK RING
OUTLET ¾”
FNPT
64cm
(25.25”)
BACKPULSE TANK
AIR BLADDER
VALVE
51cm
(20”)
STAND
Replacement Parts
Table 1 - Replacement parts used with the MAYTAG Whole Home Water Filtration System
Part
Description
MWF 4100 AWS
MWF 4200 AWS MWF 4300 AWS
Number
67500001
Carbon Prefilter
√
67500002
Stainless Steel Prefilter
√
√
67500008
8” Neoprene cap O – Ring
67500007
67500010
System Replacement (includes cap,
O-ring, 3 poly nipples and backpulse
tank)
Cap Wrench
67500003
External Prefilter Kit
67500004
67500025
External Prefilter Replacement
Cartridge
External Prefilter Wrench
67500026
External Prefilter O-Ring
67500005
Base Controller with batteries (2AA)
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
MAYTAG Whole Home Water Filtration System Owners Manual MA1-5
November 2003
11
67500006
67500011
Advanced Controller with batteries
(2AA)
Cap
67500012
Lockring
67500013
Backpulse Tank
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√ (Inlet may also
require solenoid NO)
√
√
√
√
√
√ (Inlet may also
require solenoid NO)
√
√
67500014
Base
67500015
Inlet or Outlet Pipe Assembly
67500016
Drain Pipe Assembly
67500017
67500018
Installation Sub Assembly Kit (inlet,
outlet, drain, air vent)
Solenoid Valve NC (Normally Closed)
67500019
Solenoid Valve NO (Normally Open)
67500020
Hex Elbow, ¾”Mx5/8” Hose Barb
√
√
√
√
√
67500021
√
√
√
67500009
Air Vent Valve, automatic float, duo
vent
O-Ring Lube – NSF Certified
67500023
Pressure Test Gauge Assembly
√
√
√
√
√
√
67500024
MAYTAG MC1 Cleaning Solution
√ (for ground
water only)
Startup of a new MAYTAG Whole Home Water Filtration
System
Once the MAYTAG Services Qualified Service Installer has completed the new System
installation, the owner should thoroughly flush the filtration system before using. Simply open a
nearby water tap and allow to run for about 1 hour. Ensure that the drain is open and unobstructed
and able to accommodate the flow. Do not leave flowing water tap unattended. This will remove
any residual preservative from the new System.
Sanitizing Your Household Distribution System
If your new MAYTAG Whole Home Water Filtration System is being used to filter water from
sources other than a municipal drinking water supply, your household drinking water distribution
system should be sanitized prior to use. Please see your MAYTAG Services Qualified Service
Installer or MAYTAG Customer Care for details.
Maintenance Schedule
All service and maintenance is to be performed by a MAYTAG Services Qualified Service
Technician. An annual integrity test must also be performed by a MAYTAG Services Qualified
Service Technician. This annual test is required as part of the 5 year limited prorated membrane
warranty.
If the MAYTAG Services Qualified Service Technician determines that the System has a high
degree of debris causing a reduction in System flowrate, the number of visits per year may be
increased by MAYTAG to ensure that the System stays within operational limitations set by
MAYTAG Whole Home Water Filtration System Owners Manual MA1-5
November 2003
12
MAYTAG Whole Home Water Filtration System and to ensure the limited warranty protection
remains in effect.
Table 2 outlines the maintenance schedule that should be followed for each Model of the
MAYTAG Whole Home Water Filtration System:
Table 2 – MAYTAG Whole Home Water Filtration System Maintenance Schedule
Model MWF 4200 AWS
Model MWF 4100 AWS
Required service
Part No.
Comments
Every 12 Mo.
Carbon Prefilter
67500001
Water sources with high levels
of particulate, usage and/or
chlorine will require more
frequent changes.
Replace
System cleaning
--
Clean
Integrity testing*
--
Test
Backpulse Tank air
pressure
67500013
Adjust air pressure as
required**
Test
Base Controller
batteries: 2AA
--
Check timer and program
settings
Replace
Stainless Steel
Prefilter
67500002
Water sources having
significant sediment will require
more frequent cleaning.
Clean
System cleaning
--
Clean
Integrity testing*
--
Test
Backpulse Tank air
pressure
67500013
Adjust air pressure as
required**
Test
Base Controller
batteries: 2AA
--
Check timer and program
settings
Replace
*MAYTAG Services Qualified Service Technician must conduct an Integrity Test annually in order
to validate the limited warranty.
**BP tank pressure setpoint is recorded on page 2.
MAYTAG Whole Home Water Filtration System Owners Manual MA1-5
November 2003
13
Model MWF 4300 AWS
Required service
Part No.
Comments
Every 6 mo.
Every 12 Mo.
Stainless Steel
Prefilter
67500002
Water sources with high levels of
particulate will require more frequent
cleaning.
System cleaning
--
Clean
Integrity testing*
--
Test
System
67500007
Backpulse Tank
air pressure
67500013
Adjust air pressure as required**
External Pre-filter
cartridge
67500004
Highly variable service rate, due to
variability in raw water quality.
Clean or
replace
Advanced
Controller
batteries: 2AA
--
Check timer and program settings
Check
Clean
Test
Replace
Table 2 – MAYTAG Whole Home Water Filtration System Maintenance Schedule(cont.)
*MAYTAG Services Qualified Service Technician must conduct an Integrity Test annually in order
to validate the limited warranty.
**BP tank pressure setpoint is recorded on page 2.
MAYTAG Whole Home Water Filtration System Owners Manual MA1-5
November 2003
14
Replacing/Cleaning the Internal Prefilter and Cleaning the
System
All service and maintenance is to be performed by a MAYTAG Services Qualified Service Technician.
Handle
End
These instructions describe the procedure
for installing, replacing or cleaning the
MAYTAG Whole Home Water Filtration
System internal prefilter and cleaning of
the System. Model MWF4100AWS is
equipped with the Carbon Prefilter (Photo
3a) and Models MWF4200AWS and
MWF4300AWS are equipped with the
Stainless Steel Prefilter (Photo 3b).
Important: The System must not be
operated without either an internal
Stainless Steel Prefilter or Carbon
Prefilter in place.
Special tools are required to perform
service. These instructions are provided
for information purposes only. Please call
your MAYTAG Customer Care at 1-800688-2002 to arrange all service and
maintenance work.
Spigot
End
Photo 3a. Carbon prefilter
(Model MWF4100AWS)
Photo 3b. Stainless steel prefilter
(Models MWF4200AWS and
MWF4300AWS)
MAYTAG Whole Home Water Filtration System Owners Manual MA1-5
November 2003
15
To reduce the risk of severe injury, illness, death, and/or property damage, read and
follow all instructions. Use only Maytag Whole Home Water Filtration System
authorized parts where required to repair and service the Maytag Whole Home Water
Filtration System.
All service and maintenance is to be performed by a MAYTAG Services Qualified Service
Technician.
Save enough water for cleaning the Stainless Steel Prefilter prior to beginning this procedure.
Your entire house will be without water during this time. Wear clean waterproof gloves while
completing this procedure.
Shut off water
1. Locate the inlet and outlet ball valves. Refer to Photo 1 (page 6).
These should be labeled.
2. Close the inlet and outlet ball valves by turning them clockwise.
Lever handles indicate ‘off’ position when turned perpendicular to
the water pipe as shown in Photo 2b (page 6).
Clockwise
3. If equipped with a bypass valve, keep the bypass valve closed
during this operation. Failure to properly shut off the water may
lead to serious injury and/ or flooding and/or property damage.
Drain the System
for 1 minute
4. Base controller (Models MWF4100AWS and MWF4200AWS) and
Advanced controller (Model
MWF4300AWS): Press the Next button
once until the ‘Manual’ indicator flashes.
Press and hold the Manual Flush button
for 10 seconds. This will open the drain
valve and hold the drain valve open for 5
minutes. You may hear water flowing
down the drain as the valve opens. You
may toggle the valve closed at any time
during the flush by pressing the Manual Flush button once. Press
the Manual Flush button once after 1 minute to close the valve
and avoid draining the System for this step.
MAYTAG Whole Home Water Filtration System Owners Manual MA1-5
November 2003
16
Remove the cap
and internal prefilter
from the System
5.
After allowing the System to drain for 1 minute, remove the System cap
using the cap wrench (not supplied, available from MAYTAG). To
remove, turn counter-clockwise as indicated on the top of the cap.
Photo 4.
Cap Removal
6.
Pull the internal prefilter straight up and out of the internal prefilter
housing. The prefilter may be a Carbon Prefilter or a Stainless Steel
Prefilter depending on your model. Place the prefilter in a clean pail or
sink to allow draining. If you have a Carbon Prefilter, dispose in a plastic
bag. If you have a Stainless Steel Prefilter, set it aside until step 9.
7.
Wipe out inside of cap and filter chamber with a clean cloth.
8.
Inspect System o-ring (located above the System threads for the System
Cap) for any wear or damage. Very small nicks in the o-ring can result in
leaks. If necessary replace o-ring and use a very small amount of NSF
approved lube (available from your MAYTAG Qualified Dealer) to
regrease the o-ring.
During this procedure, DO NOT open the Bypass Valves, as this will allow potentially
contaminated water into the household distribution system. Contaminated water may
lead to personal injury and/or death.
Cleaning the
Stainless Steel
Prefilter
9.
If you have a Stainless Steel Prefilter, the outer surface of the Stainless
Steel Prefilter can be cleaned to remove accumulated grit or debris.
Use a brush to loosen solid material and rinse with clean water. It may
be necessary to use water from a point in the system upstream of the
System’s shutoff valve or an alternate water source for rinsing.
MAYTAG Whole Home Water Filtration System Owners Manual MA1-5
November 2003
17
Cleaning System
using:
• Chlorine bleach
(surface and
municipal water)
• MAYTAG MC1
Cleaning
Solution
(ground water)
This procedure is to be conducted after the internal prefilter has
been removed from the System. Do not permit the Carbon
Prefilter to come into contact with chlorine bleach or any other
form of chlorine. During this procedure the water level in the
System should be half way up the internal prefilter cavity. If
necessary, add water by slightly opening the inlet ball valve while
observing the water level.
Always wear safety glasses and protective clothing when handling
cleaning chemicals.
10.
Add 500mL of household chlorine bleach to System (5.25% as Cl2)
OR 250 mL of 12% chlorine pool bleach OR add the MAYTAG MC1
Cleaning Solution following instructions in the package.
Model
Cleaning Chemical Used
MWF4100AWS and
MWF4300AWS, any nonwell water
Chlorine Bleach (5.25% as Cl2)
MWF4200AWS, well
water only
Chlorine Pool Bleach (12% as
Cl2)
MAYTAG MC1 Cleaning
Solution
Never intentionally or unintentionally mix chlorine bleach and MC-1 cleaner as
poisonous and corrosive chlorine gas may be formed.
Chlorine bleach must be less than 3 months old. The active percentage reduces with
time.
After the System has soaked it must be flushed as the sanitizing solution in the water
supply may irritate the skin or cause illness if ingested.
Do not use hot water during maintenance of the System. It is possible that if a hot water
tap is used, high levels of chlorine or MAYTAG MC1 Cleaning Solution will enter the
hot water tank and cause personal injury, illness and/or death.
Soak 60 min.
11. Allow System to soak 60 minutes. Drain System for 5 minutes using the
controller as described in step 4. At the end of 5 minutes the System
Controller Manual indicator will turn off or the System Controller flashing
light will go out.
Re-install Internal
Prefilter.
12. Re-install Stainless Steel Prefilter or install a new Carbon Prefilter and
replace System Cap. When installing a new replacement or a clean,
used internal prefilter, the spigot end of the prefilter (refer to Photo 3a
and 3b on page 15), is carefully fitted into the inlet on the bottom of the
prefilter cavity.
MAYTAG Whole Home Water Filtration System Owners Manual MA1-5
November 2003
18
13. Replace System Cap. Use Cap Wrench to tighten.
Ensure that the cap is properly tightened and that the o-ring is clean and intact otherwise
leaks may occur. Leaks may result in personal injury or property damage.
Fill and Flush for 30
min.
14. Partially open inlet ball valve slowly and watch for leaks. Water will
begin to enter and pressurize the System. The air vent mounted on the
cap is designed to allow air to enter and exit the System. The small
black cap on the air vent should be loose at all times to permit the free
flow of air. Once the System is full of water you will no longer hear air
escaping from the air vent. Fully open the inlet ball valve.
15. Flush to drain using the controller for 5 minutes as described in Step 4.
Open outlet ball valve. Turn on a high demand faucet in your house (ie. a
bathtub tap) and flush the System to a drain for 30 minutes.
16. Wash hands thoroughly after maintenance work.
Replacing the External Sediment Prefilter Cartridge
All service and maintenance is to be performed by a MAYTAG Services Qualified Service
Technician. Some tools/parts are available from MAYTAG. Wear clean waterproof gloves
during this procedure.
When the water is being drawn from a lake or other surface water source,
the MAYTAG Whole Home Water Filtration System is equipped with an
External Sediment Filter. Not all Systems include this device.
Only a MAYTAG Services Qualified Service Technician may service the
External Prefilter. For service, call the phone number at the front of this
manual (page 2).
Failure to clean or replace the External Sediment Prefilter Cartridge may
result in reduced household water pressure.
Photo 5. External Sediment Prefilter
MAYTAG Whole Home Water Filtration System Owners Manual MA1-5
November 2003
19
To reduce the risk of severe injury, illness, death, and/or property damage, read and
follow all instructions. Use only MAYTAG Whole Home Water Filtration System
authorized parts where required to repair and service the MAYTAG Whole Home Water
Filtration System.
Save enough water for cleaning the External Prefilter Housing prior to
beginning this procedure.
Shut off water
1. Close inlet ball valve (refer to Inlet valve as indicated in Photo 1 on
page 6) and/or switch ‘off’ pump upstream of the filter. (The house
will be without water during this operation.)
2. Close outlet ball valve on MAYTAG Whole Home Water Filtration
System. (See Outlet Valve as indicated in Photo 1.)
Relieve pressure
in System for 1
minute
3. Relieve pressure by activating the manual flush function on the
controller of the MAYTAG Whole Home Water Filtration System for
1 minute.
Note: This step must be followed to avoid personal injury and damage
to the System.
Base controller (Models MWF4100AWS and
MWF4200AWS) and Advanced controller
(Model MWF4300AWS)
Press the Next button once until the ‘Manual’
indicator flashes. Press and hold the Manual
Flush button for 10 seconds. This will open the
drain valve and hold the drain valve open for 5
minutes. You may hear water flowing down the
drain as the valve opens. You may toggle the valve closed at any
time during the flush by pressing the Manual Flush button once.
Press the Manual Flush button after 1 minute to close the valve and
avoid draining the System for this step.
Drain filter
4. Drain External Sediment Filter housing by opening
stopcock on the bottom. Water may be drained directly
into a container or through a ¼” plastic hose attached
to the stopcock. Press and hold the red button on the
top of the housing to allow air to enter the housing and
drain more quickly.
Stopcock
MAYTAG Whole Home Water Filtration System Owners Manual MA1-5
November 2003
20
Disassemble
External Prefilter
Housing
5. Using the optional External Prefilter Housing Wrench (available from
MAYTAG), turn the housing to the left (counter clockwise) to
disassemble (Photo 6).
Photo 6. Disassembling the External Prefilter Housing
6. Remove the External Prefilter Cartridge from the External Prefilter
Housing.
7. The surface of the External Prefilter Housing may be cleaned with a
brush and rinsed with water to remove grit and debris. Discard used
External Prefilter Cartridge.
8. Inspect O-Ring and the External Prefilter Housing for damage or
wear, as shown in Photo 7. Replace if required.
Photo 7. Inspecting o-ring.
Install new
cartridge and
restart System
9. Insert the new External Prefilter Cartridge into the External Prefilter
Housing. Ensure that the spigot on the bottom of the housing lines
up with the hollow core of the External Prefilter Cartridge. Be careful
not to damage the External Prefilter Housing when reinstalling
External Prefilter Cartridge.
10. Tighten using the optional External Prefilter Housing Wrench.
MAYTAG Whole Home Water Filtration System Owners Manual MA1-5
November 2003
21
11. Restart pump or slowly open the inlet ball valve. Water will begin to
enter and repressurize the System.
12. Press and hold the red button on the External Prefilter head to allow
air to exit the External Prefilter Housing during filling.
Note: Step 12 is important for the External Prefilter to function properly.
13. If the System is equipped with bypass, ensure that the bypass valve
is closed.
14. Flush the MAYTAG Whole Home Water Filtration System for 1
minute using the controller (refer to step 3) to purge air from the
System. Open the MAYTAG Whole Home Water Filtration System
outlet ball valve to return to service.
Setting the Controller
To reduce the risk of severe injury, illness, death, and/or property damage, read and
follow all instructions. Use only Maytag Whole Home Water Filtration System
authorized parts where required to repair and service the Maytag Whole Home Water
Filtration System.
The Controller is a timing device that automatically opens the automatic drain valve to provide daily flushing and
prevent accumulation of solid material that would result in premature System fouling.
The MAYTAG Whole Home Water Filtration System is equipped with either a Base Controller (Models
MWF4100AWS and MFW4200AWS) or Advanced Controller (Model MWF4300AWS). The Advanced controller
includes the added feature of automated inlet (solenoid) valve control. This feature provides the most thorough
flushing by completely draining the system.
See Table 5 or 6 Controller Program Selection for a description of the various program choices available
with each Controller.
Base Controller
(Models MWF4100AWS and MWF4200AWS)
Base Controller setup procedure- Models MWF4100AWS and MWF4200AWS
1. Modes: Use ‘next’ button to toggle through modes.
Base controller
•
•
Use with low
turbidity waters,
<0.5NTU, usually
pretreated
municipal water.
Has one output
terminal and
controls only the
drain valve
2.
Manual flush: Press ‘next’ until ‘manual’ is flashing. Press ’manual flush’
and hold. If held for longer than 10 seconds, drain valve remains open. Toggle
drain valve closed by pressing ‘manual flush’ once.
3. Setting time of day: Press ‘next’ until ‘set time’ appears. Press ‘enter’. Use
up/down arrows to set time of day. Press ‘enter’ to set.
4. Set time of flush: Press ‘next’ until ‘start time’ appears. Press ‘enter’. Use
up/down arrows to set time of flush. Press ‘enter’ to set.
5. Setting program choice: Press ‘next’ until ‘program’ appears. Press ‘enter’.
Use up/down arrows to select program choice. Press ‘enter’ to set.
(See Table 5 for programming choices.)
Table 3-Base Controller Setup Procedure
MAYTAG Whole Home Water Filtration System Owners Manual MA1-5
November 2003
22
Advanced Controller
(Model MWF4300AWS)
Advanced Controller setup procedure
1. Modes: Use ‘next’ button to toggle through modes.
Advanced Controller
•
•
Use with waters
having turbidity up
to 5.0NTU,
Has two output
terminals and
controls the
automated drain
and inlet valve.
2.
Manual flush: Press ‘next’ until ‘manual’ is flashing. Press ’manual flush’
and hold. If held for longer than 10 seconds, drain valve remains open. Toggle
drain valve closed by pressing ‘manual flush’ once.
3. Setting time of day: Press ‘next’ until ‘set time’ appears. Press ‘enter’. Use
up/down arrows to set time of day. Press ‘enter’ to set.
4. Set time of flush: Press ‘next’ until ‘start time’ appears. Press ‘enter’. Use
up/down arrows to set time of flush. Press ‘enter’ to set.
5. Setting program choice: Press ‘next’ until ‘program’ appears. Press ‘enter’.
Use up/down arrows to select program choice. Press ‘enter’ to set.
(See Table 6 for programming choices.)
Table 4-Advanced Controller Setup Procedure
Choosing a Controller Program
ControllerProgram
Recommended
household
occupancy
(persons)
Source water
turbidity
(NTU)
Program 1
Up to 4
<0.5
Program 2
Up to 4
Program 3
Up to 6
<0.5Peaks to
1.0NTU, <5%
of time
<0.5 Peaks to
1.0NTU, <5%
of time
Base Controller
Daily household
water consumption
No.
Flushes
per cycle
No.
System
drains
per cycle
Flush water used
per day
(flow at
7USGAL/min)
300Usgal/d
(1135L/d)
300Usgal/d
(1135L/d)
2
--
14USgal/d (53L/d)
3
--
21USgal/d (80L/d)
400Usgal/d
(1510L/d)
4
--
28USgal/d
(106L/d)
Table 5-MWF4100AWS and MWF4200AWS Controller Program Selection
MAYTAG Whole Home Water Filtration System Owners Manual MA1-5
November 2003
23
Advanced Controller
Program
Program 1
Recommended
household
occupancy
(persons)
Up to 4
(Raw) Source
water turbidity
(NTU)
Daily household
water consumption
No.
Flushes
per cycle
Program 2
Up to 6
<0.5
Peaks to
1.0NTU, <5%
of time
Program 3
Up to 4
Program 4
Up to 6
<1.0
Peaks to
5.0NTU, <5%
of time
<5.0
Peaks to
10.0NTU,
<5% of time
2
No.
System
drains
per cycle
--
Flush water used
per day
(flow at
7USGAL/min)
14Usgal/d (53L/d)
<0.5
300Usgal/d
(1135L/d)
400Usgal/d
(1510L/d)
4
--
28Usgal/d
(106L/d)
300Usgal/d
(1135L/d)
2
1
13Usgal/d (49L/d)
400Usgal/d
(1510L/d)
2
2
18Usgal/d (68L/d)
Table 6-MWF4300AWS Controller Program Selection
Winterization Procedure
All service and maintenance is to be performed by a MAYTAG Services Qualified Service
Technician.
Some of the necessary tools required are available for purchase from MAYTAG. If the Stainless
Steel Prefilter requires cleaning, you may want to collect enough water in a suitable container
from a tap for cleaning the Stainless Steel Prefilter prior to beginning this procedure. All water in
the house will be shut off for the duration of this procedure. Be sure to wear clean waterproof
gloves during this procedure and to read through the procedure first before beginning.
MAYTAG Whole Home Water Filtration System Owners Manual MA1-5
November 2003
24
Never ever use any AUTOMOTIVE type antifreezes when winterizing drinking systems. This
may result in serious injury or death.
The use of cheaper ‘non-propylene glycol based’ plumbing or RV antifreezes may damage the
System’s internal components voiding all warranties. Antifreeze used must be plumbing
antifreeze, rated for –50 oC (-58 F), consisting primarily of propylene glycol and must not contain
any ethanol or alcohols.
Propylene glycol will provide protection of the System against freezing down to –40 oC (-40 F) as
long as the proportion of preservative to water is correct. The amount and concentration of the
preservative solution has been selected to take into account water that is not easily drained from
the System. This procedure only protects the MAYTAG Whole Home Water Filtration System
from freezing and does not protect the rest of the house.
Do not use hot water during commissioning or maintenance of the System. It is possible that if a
hot water tap is used, high levels of factory preservative, chlorine or MAYTAG MC1 Cleaning
Solution will enter the hot water tank and cause personal injury, illness and/or death. It is
recommended to close the hot water inlet valve during commissioning or maintenance of the
System and to reopen the hot water inlet valve at the end of the procedure.
When filling System, fill slowly and watch for leaks to avoid excessive water dripping onto floor.
During this procedure DO NOT open the Bypass Valves as this will allow potentially
contaminated water into the household distribution system. Contaminated water may lead to
personal injury and/or death.
Chlorine bleach must be less than 3 months old. The active percentage reduces with time.
This procedure does not disinfect all of the household lines. It is strongly recommended that all
of the lines are sanitized as water left in pipes may be microbially unsafe.
When treating surface water sources a maximum prefilter mesh size of 30 micron is required.
Failure to provide this level of prefiltration may lead to System damage. A damaged System will
not perform effectively, endangering the homeowner or occupant through possible serious
personal injury and/or even death.
Do NOT allow the preservative (plumbing antifreeze) to drain onto the ground, into a septic bed,
storm sewer or any body of water. Check the plumbing antifeeze manufacturers directions and
warnings for more information.
MAYTAG Whole Home Water Filtration System Owners Manual MA1-5
November 2003
25
Figure 2 Drain line components for all models.
System
Drain line
Figure 3 Inlet and outlet line components for MWF4100AWS and MWF4200AWS.
Inlet or Outlet
Port on System
MAYTAG Whole Home Water Filtration System Owners Manual MA1-5
November 2003
26
Figure 4 Inlet line components for MWF4300AWS.
Figure 5 Outlet line components for MWF4300AWS.
Before
Winter
Freeze-up:
1. Close the inlet ball valve. If a bypass valve is installed, the bypass valve
must remain closed.
2. Completely drain the System and household piping. To drain the System
use the controller and refer to procedure “Internal Prefilter
MAYTAG Whole Home Water Filtration System Owners Manual MA1-5
November 2003
27
Replacement/Cleaning and System Cleaning Procedure” use the System
controller and flush to drain for 5 minutes. To begin draining the
household pipes, turn on a nearby cold water tap and leave it on until the
tap only drips. Turn off the tap.
3. Remove the drain line from the drain valve and insert a ¾” MNPT Hex
PVC plug (available at most hardware stores) to prevent preservative from
leaking. Remove hose clamp on drain line and remove elbow. (Refer to
Figure 1 for location of drain line on your System and Figure 2 for drain
line parts.)
Photo 8. ¾” Plug in Automated
Drain Valve
4. Drain the pipes by disconnecting the outlet line on the side of the stainless
steel flex hose furthest from the System. (Refer to Figure 1 for location of
outlet line on your System and Figure 3 or 4 depending on your model for
the outlet pipe assembly parts.) Drain into bucket for at least 10 minutes.
5. Close the outlet ball valve. (Refer to Photo 1 for location.) Plug the
disconnected outlet line on the System side with a ¾” MNPT Hex PVC
plug at the end of the Stainless Steel flexhose.
Photo 9. ¾” Plug in Stainless Steel
Flex Hose in Outlet Line
6. If using an External Prefilter, drain the External Prefilter Housing (refer to
“Replacing the External Sediment Prefilter Cartridge” section), remove
the External Prefilter Cartridge and discard the External Prefilter
Cartridge. Replace the External Prefilter Housing without an External
Prefilter Cartridge and close the stopcock on the bottom of the External
Prefilter Housing.
7. Remove System Cap using the Cap Wrench.
8. Remove Stainless Steel Prefilter (Models MWF4200AWS and
MWF4300AWS) or Carbon Prefilter (Model MWF4100AWS). If using a
Carbon Prefilter, discard the Carbon Prefilter. If using a Stainless Steel
MAYTAG Whole Home Water Filtration System Owners Manual MA1-5
November 2003
28
Prefilter, clean and set aside the Stainless Steel Prefilter.
9. Fill the System with approximately 16 litres (4 US gallons) of –50 oC (-58
F) propylene glycol based plumbing antifreeze to 2” below the top of the
prefilter cavity.
10. Unplug the outlet line on the System side to “open the outlet” by
removing the ¾” PVC plug. Remove approximately 4 litres (1 US gallon)
from the System into an empty propylene glycol based container. The
fluid in the System must be 2” above the bottom of the prefilter cavity.
Close the outlet line by replugging the outlet line with the ¾” PVC plug.
Discard the collected fluid in accordance with the manufacturers
directions and save the container.
11. Save all empty antifreeze containers for the spring.
12. If using a Stainless Steel Prefilter, replace the Stainless Steel Prefilter.
13. Replace the System Cap using the Cap Wrench.
14. Check the drain plug and the outlet plug are closed snug. Make sure there
are no leaks. The System is ready for the winter.
Note: The preservative will provide protection against freezing down to –40°C as
long as the proportion of propylene glycol to water is correct. The amount and
concentration of the propylene glycol solution has been selected to take into
account water that is not easily drained from the System. This procedure does
not protect the rest of the house from freezing, it only provides necessary
precautions for the MAYTAG Whole Home Water Filtration System.
Never mix MAYTAG MC1 Cleaning Solution with chlorine bleach.
Spring
startup
and
cleansing
1. Drain the propylene glycol solution from the System by removing the
outlet line plug. Drain into the saved antifreeze containers.
2. Dispose of the propylene glycol solution in accordance with the
manufacturers directions.
3. Remove the drain plug from the drain valve.
4. Reconnect the drain and outlet lines. (Refer to Figures 2, 3 and 4 if
necessary.) Ensure the connections and the hose clamp on the drain hose
are snug. Ensure there are no kinks in the drain line.
5. Open the inlet ball valve and fill the System. Air will escape through the
air vent on the System cap.
MAYTAG Whole Home Water Filtration System Owners Manual MA1-5
November 2003
29
6. Open the outlet ball valve. Open the closest cold water high demand tap
(ie. bathtub faucet) for 30 minutes.
7. Open all cold taps one at a time for 1 minute. Flush all toilets once.
8. Close the inlet ball valve. Partially drain System using the flush function
for 1 minute to depressurize the System, refer to “Replacing/Cleaning the
Internal Prefilter and Cleaning the System” use the System controller in
step 4.
9. Remove System Cap using the Cap Wrench.
10. If using a Stainless Steel Prefilter, remove and set aside the Stainless Steel
Prefilter in a clean pail or sink.
11. Be sure the water level in the System is approximately ½ way up the
prefilter cavity. Add more water using the inlet ball valve if necessary.
Add 500 mL of unscented household chlorine bleach (approximately
5.25% chlorine), maximum 3 months old, to the System.
Note: Do not allow chlorine to come into contact with the Carbon
Prefilter.
12. Allow the System to soak for 15 minutes. Drain the System using the
controller as in step 8 above.
Note: If the winterization spring start up is combined with the annual
maintenance sanitizing/cleaning procedure, the System must soak for 60 minutes.
If the System is on well water, the chlorine must be substituted with MAYTAG
MC1 Cleaning Solution instead of chlorine bleach. Never mix chlorine bleach
with the MAYTAG MC1 Cleaning Solution.
13. If using a Carbon Prefilter, install a new Carbon Prefilter. If using a
Stainless Steel Prefilter, reinsert the Stainless Steel Prefilter.
14. Replace the System Cap using the Cap Wrench.
15. If using an External Prefilter, drain the External Prefilter Housing (refer to
“Replacing the External Sediment Filter Cartridge” section) and insert a
new External Prefilter Cartridge into the External Prefilter Housing.
Close the External Prefilter stopcock.
16. Partially open the inlet ball valve slowly and watch for leaks. The air vent
will make a hissing noise as air escapes. If no noise is heard, open the
small black cap on top of the air vent. Once the System is full of water,
open the inlet ball valve fully.
MAYTAG Whole Home Water Filtration System Owners Manual MA1-5
November 2003
30
17. Flush to drain for 5 minutes using the controller (refer to step 8 above).
Open the outlet ball valve. Open a nearby cold water high demand tap for
30 minutes.
Note: The water may taste slightly different for the first few days but will not be
harmful if procedures are followed. It is recommended that first thing in the
morning for the first two days after this procedure is complete, leave a cold water
tap on full for 30 minutes.
MAYTAG Whole Home Water Filtration System Owners Manual MA1-5
November 2003
31
Annual Maintenance Checklist
√
Required annually
Integrity test
Chlorine (or MAYTAG MC1) cleaning
Test and record inlet minus outlet pressure and flow rate
during test (TMP test)
Test backpulse tank air pressure
Change internal Activated Carbon filter (MWF4100AWS) or clean
internal Stainless Steel filter (MWF4200AWS, MWF4300AWS)
Change External sediment prefilter cartridge (MWF4300AWS)
Record water meter reading
Replace/ check controller batteries
Check timer clock setting, flush time setting, program choice
All service and maintenance is to be recorded on the Service Tag on the MAYTAG Whole Home
Water Filtration System. This tag will be filled out by the MAYTAG Services Qualified Service
Technician to maintain the limited warranty.
Cleaning the Stainless Steel Casing
The stainless steel surface of your MAYTAG Whole Home Water Filtration System requires no
special maintenance. If required the surface may be cleaned using a mild soap solution. Do not
use any other cleaners or abrasive materials on the stainless steel surface as these cleaners may
damage the label. Wipe the System dry with a soft cloth afterward.
Frequently Asked Questions
What does the System do?
The System has been specifically designed to physically block and remove bacteria, viruses and
parasites including cryptosporidium and giardia (beaver fever) and to eliminate cloudiness from
your drinking water.
The Carbon Prefilter removes chlorine to improve taste and odours in municipal water.
The System effectively filters all municipal, well and lake water.
Where is the System installed?
The System is installed at the point where water enters the house to provide filtered water from
every tap. Water is available on demand with no wasted water during filtration.
MAYTAG Whole Home Water Filtration System Owners Manual MA1-5
November 2003
32
Does the System require electricity?
Filtration is accomplished with existing water pressure and no electricity is required to filter your
water. Unless required for pump operation, the System will continue to filter water during a
power failure. Electrical power is required to operate the automated drain and inlet (solenoid)
valves that initiate automatic flushing of the System. If electrical power is not available the
System will not conduct automatic flushing. Controller settings are saved by battery backup
power.
Does the System affect the water pressure?
There is minimal effect on your existing water pressure. Under most circumstances, no change in
water pressure will be noticed after the installation of a new System. There is no need for an
additional water pump if the existing water pressure meets the minimum System requirements.
Under normal operation in cloudy water the System may foul more quickly than in cleaner water,
may require more frequent cleanings and may require alternate controller settings.
What can be done to increase my water pressure?
Table 5 outlines four reasons why your pressure may be lower than normal. Check as many as
possible before calling MAYTAG Customer Care.
Table 5 – Possible causes of low water pressure
Problem
Solution
1. The city / pump pressure is low or
Call the city or check your pump.
your line is scaled.
2. The External Prefilter Cartridge (if
Call MAYTAG Customer Care to clean or change
installed) is fouled.
the External Prefilter Cartridge.
3. The Internal Prefilter (Carbon or
Call MAYTAG Customer Care to clean or change
Stainless Steel) is fouled.
the Carbon or Stainless Steel Prefilter.
4. The MAYTAG Whole Home Water Initiate Manual Flush Function. If this does not
Filtration System is fouled.
resolve the low-pressure situation, call MAYTAG
Customer Care for cleaning or possible System
replacement.
How often does the MAYTAG Whole Home Water Filtration System need to be
replaced?
The System is designed to last the life of the membrane, with regular maintenance.
How long does the System last?
The System will generally last over 10 years if used on municipal water and will last from 5 to 10
years on surface/lake waters depending on the level of contamination in the incoming water.
What do I need to do if I go away for an extended period of time?
If you wish to shut off the water supply to your house while you are away you may simply close
the outlet ball valve on the MAYTAG Whole Home Water Filtration System. The MAYTAG
Whole Home Water Filtration System will continue to flush daily but water will be unavailable in
the house. If you plan to turn off the inlet ball valve (not recommended), you must unplug the
controller. When you return open the outlet ball valve (and ensure inlet ball valve is open and
MAYTAG Whole Home Water Filtration System Owners Manual MA1-5
November 2003
33
controller is plugged in) and household pressure will be restored. It is recommended that you also
turn each tap on for 10 minutes to flush out stagnant water before use.
How do I bypass the MAYTAG Whole Home Water Filtration System?
Bypassing the MAYTAG Whole Home Water Filtration System is not recommended unless
there is an Emergency and your MAYTAG Whole Home Water Filtration System is not
working properly. Contaminated water may enter your home, which can cause serious
health problems, even death. See “Safety Instructions” section for Bypass Instructions and
warnings.
What happens if the power goes out?
Nothing. The timer has a built in battery backup designed for power failure. The MAYTAG
Whole Home Water Filtration System does not require power to filter water and your System will
filter water provided adequate water pressure is available at the source. If the power goes out
during a scheduled cleaning, the System will return to filtering water and wait for the next
scheduled time for cleaning.
How long does the automatic cleaning cycle take?
The System backflushes itself daily to clean the System filter. It automatically flushes impurities
down the drain at the homeowner’s pre-selected time. The cleaning cycle takes approximately 510 minutes and uses a minimal amount of water.
How much water is used for flushing?
Refer to Table 6 Operational Limits of the System in the “MAYTAG Whole Home Water
Filtration Operational Specification” section.
How do I set a new time for the daily backwash and cleaning?
Refer to the instructions with the Controller on the wall to reprogram using the instruction sheet
or refer to “Setting the controller” section for instructions.
Is there a replaceable prefilter needed?
If used, the Carbon Prefilter needs to be replaced every 12 months. Also, if the External Prefilter
is used it will need to be replaced approximately every 6 months depending on water conditions.
What are the maintenance requirements?
An annual maintenance inspection, integrity test and Carbon Prefilter change is performed
annually by a MAYTAG Services Qualified Service Technician. There is a nominal fee for the
annual service. If an External Prefilter is used, this will also need to be checked approximately
every 6 months.
MAYTAG Whole Home Water Filtration System Owners Manual MA1-5
November 2003
34
How long does the Carbon Prefilter last?
The Activated Carbon Prefilters are designed to filter over 100,000 US gallons (378,000 L). The
average homeowner will find it necessary to change the activated carbon filter every 9-12 months.
The quality of water, amount of chlorine, other contaminants in the water (chlorine), and the
amount of water used determines the actual life of an activated carbon filter. Activated carbon
filters have been designed for maximum life to eliminate the inconvenience of changing them.
Can I water my lawn with the MAYTAG Whole Home Water Filtration System’s
filtered water?
You can use filtered water outside if you wish. You may choose to have a bypass installed if you
use large amounts of water through your outside tap that does not need to be filtered. Call
MAYTAG Customer Care or MAYTAG Technical Assistance for more details.
Can it be shut down in winter?
If the cottage or home is not winterized, refer to the Winterization Procedure on page 25 to drain,
shutdown and fill the System with propylene glycol for the winter. In the spring the propylene
glycol would be drained from the System and then sanitized for use during cottage or home
opening.
What happens if there is a boil water alert in my area?
If you receive notice that there is a boil water alert in your area, there are extra precautions that
you must take with your water supply. A boil water alert is a serious announcement made in the
interest of protecting your health from water that may be contaminated.
We would recommend you take extra precautions. Follow these steps during a boil water alert:
•
•
•
•
Use household chlorine bleach to disinfect the aerators on each faucet in your home each day.
Wash your hands frequently.
Test your water for bacteria at the beginning of a boil water alert, and once a month thereafter
to ensure your water supply has not become contaminated. Call your local government
officials for local directions on water quality, testing, frequency of testing, and guidelines.
If the bacteria test indicates that bacteria exists in your home, call MAYTAG Customer Care
for assistance. If your water tests come back with results that show no bacteria in your water,
continue to use your water supply. Continue checking the water for bacteria at least once a
month.
If my System came with a Stainless Steel Prefilter can I buy a Carbon Prefilter?
Depending on the System application, an optional Carbon Prefilter may be purchased to replace
the Stainless Steel Prefilter. Call MAYTAG Customer Care for support.
My water is from the lake and it has a funny smell, can something be done?
Smells like fish or algae that come from lake water are not harmful. Using a Carbon Prefilter
instead of the Stainless Steel Prefilter may minimize these smells. However, if a Carbon Prefilter
is used it will need to be replaced more frequently than once a year.
MAYTAG Whole Home Water Filtration System Owners Manual MA1-5
November 2003
35
My lake water is quite dirty and the External Prefilter Cartridge requires
replacement quite often. Can I increase the time between replacements of the
External Prefilter Cartridge?
Yes. In some cases two External Prefilters have been installed. With two External Prefilters, the
time to replace the External Prefilter Cartridge is extended by more than twice the original time.
MAYTAG Whole Home Water Filtration System Owners Manual MA1-5
November 2003
36
Troubleshooting
The following section will help diagnose some of the problems that might occur with the
MAYTAG Whole Home Water Filtration System. This guide is provided for information
purposes only. Call your MAYTAG Customer Care for assistance if there are any concerns with
the MAYTAG Whole Home Water Filtration System.
Section of
System
Problem/Situation
Correction/Action
General
A part is missing.
Most standard hardware parts are available at the
local hardware store or call MAYTAG Customer
Care for a MAYTAG Whole Home Water
Filtration System replacement part.
Cap is not properly tightened.
O-ring is not clean or intact.
O-ring is not in place.
Connections are not tight.
Connections were too tight and part broke.
Water is not adequately drained from System prior
to removing cap.
Teflon tape not used on thread.
System leaks water.
Checking
Backpulse Tank
Pressure *(Must
Pressure is too high.
Release some of the pressure until the desired
pressure is reached.
The pressure is too low.
Add more pressure using a compressor or hand
pump. Check the pressure again the next day. If
the pressure drops call MAYTAG Customer Care.
Threads are cross-threaded.
Replace the parts if possible. Add more Teflon tape
and slowly thread the two parts together to attempt
to fix the problem.
Tighten connection.
Loosen connection that is too tight.
No Teflon tape was used, call MAYTAG Customer
Care to reinstall part using Teflon tape.
relieve water
pressure from
System before
checking backpulse
tank.)
Connecting
Piping
Assemblies
A leak results.
Air Vent
Water spouts from top.
No water is flowing through
System.
Air relief port is not capped.
Air vent is faulty.
Black air relief port cap must be loosened to 1 ½
turns (to open).
Removal of Cap
Can not remove cap.
System may be pressurized. Turn off inlet ball
valve and drain System using controller.
No cap wrench – call MAYTAG Customer Care.
External
Prefilter
Does not drain fast enough.
Press and hold the red button on the top of the
housing to allow air to enter the housing and drain
more quickly.
MAYTAG Whole Home Water Filtration System Owners Manual MA1-5
November 2003
37
Section of
System
Base Controller
Advanced
Controller
Problem/Situation
Correction/Action
Water is leaking from the
bottom.
Close the stopcock.
Drain does not function.
Repeatedly push “Next” until the MANUAL
indicator flashes. Press and hold the “manual flush”
button for 10 seconds. The “Manual” indicator will
appear on the screen. This will open the drain valve
for 5 minutes. To toggle the valve closed at any
time press the “manual flush” button once.
If the valve still does not open, it is possible the
valve may need to be replaced. Call MAYTAG
Customer Care.
MAYTAG Whole Home Water Filtration System Owners Manual MA1-5
November 2003
38
MAYTAG Whole Home Water Filtration System Operational
Specifications
Table 6 indicates the operational limitations of the MAYTAG Whole Home Water Filtration
System.
Table 6 – Operational Limits of the System
Recommended Max Flow Rate Per/min (LPM/USgpm)
MWF4100AWS ………………………………………………….
MWF4200AWS MWF 4300AWS…………………………………
17/4.5
34/9
Pressure Drop at 34 LPM (kPa/psi)*
MWF4100AWS …………………………………………………
MWF 4200AWS MWF4300AWS ………………………………
17/2.5
41/6
Maximum working pressure (kPa/psi)………………………
690/100
Minimum working pressure (kPa/psi)………………………
241/35
Rated Capacity (L/USgal per day)**…………………………
1500/390
Minimum Temp (C/F)…………………………………………
>0/32
Maximum Temp (C/F)…………………………………………
<38/100
Approx flush volume (L/USgal)………………………………
45/12
System Efficiency……………………………………………..
97%
Controller Voltage……………………………………………….
120V
Base Width (m/in.)……………………………………………….
0.45x0.45/18x18
Minimum height required (m/in.)………………………………
1.88/74
*At time of installation
** Depends on water quality and flow rate
MAYTAG Whole Home Water Filtration System Owners Manual MA1-5
November 2003
39
MAYTAG WHOLE HOME WATER FILTRATION SYSTEM Limited
Warranty
You have just purchased one of the leading whole home water treatment systems available. As an
expression of our confidence in Maytag Whole Home Water Filtration System, your drinking water system is
warranted to the original end user against defects in material and workmanship when:
•
•
It has been installed in accordance with Maytag specifications by a Maytag Services Qualified Service
Installer.
Annual maintenance has been performed by a Maytag Services Qualified Service Technician. Proof of
purchase (invoice) is required.
For a period of one year after installation:
All parts and labour on the complete System excluding consumables (e.g. Prefilters, cleaning solutions,
batteries etc.) and labour required for the operation and maintenance of the MAYTAG WHOLE HOME
WATER FILTRATION SYSTEM as specified in the owners manual.
For a period of two years after installation:
All parts used in the original installation of the MAYTAG WHOLE HOME WATER FILTRATION SYSTEM,
are covered by warranty excluding consumables ( e.g. Prefilters, cleaning solutions, batteries, etc) required
for the operation and maintenance of the MAYTAG WHOLE HOME WATER FILTRATION SYSTEM.
Labour to install warranted parts and trip charges including mileage are the responsibility of the
homeowner.
For a period of 5 years from the date of original installation:
Maytag will replace the original MAYTAG WHOLE HOME WATER FILTRATION SYSTEM Membrane
Module when a Maytag Services Qualified Service Technician finds a membrane integrity breach, as
defined by an integrity check, within the warranty period. Maytag reserves the right to examine membrane
modules deemed by the Maytag Services Qualified Service Technician to have a membrane integrity
beach, and provide the final opinion on whether the membrane module is defective. If the part is found to be
defective, Maytag will pro rate the cost of a membrane module as follows:
MAYTAG WHOLE HOME WATER
FILTRATION SYSTEM Warranty Schedule
Pro-rated cost to the homeowner as a %
of Suggested List
Up to 24 months
25-36 months
37-48 months
49-60 months
0%
40%
60%
80%
Labour to install warranted parts and trip charges including mileage are the responsibility of the
homeowner.
This warranty does not apply:
to damage caused by accident, fire, flood, freezing, Acts of God, misuse, misapplication, neglect, alteration,
installation or operation contrary to our printed instructions, or by the use of accessories or components
which do not meet Maytag specifications.
to the cost of installation or defects caused by improper storage or handling prior to installing the
equipment.
to any work done by anyone other than a Maytag Services Qualified Service Technician.
to work done under normal maintenance, calibration or regular adjustments as specified in operating and
maintenance instructions of this manual and or labour involved in moving adjacent objects to gain
access to the MAYTAG WHOLE HOME WATER FILTRATION SYSTEM .
to any System which has been damaged or defaced.
MAYTAG Whole Home Water Filtration System Owners Manual MA1-5
November 2003
40
to Systems that have been subject to improper, abnormal or insufficient care or cleaning, or to modification,
tampering, alteration, improper service, repair, assembly or disassembly by anyone other than a
Maytag Services Qualified Service Technician.
to damage or defects resulting from exposure to excessive heat or cold (including extremely hot or cold
water), or use on improper electrical current or voltage. The System is not for use with hot water
to Systems with which non - Maytag consumable items have been used
to Systems that have been operated without the specified prefilter
to Systems that have been operated without the necessary sediment prefilter on surface waters
to Systems that have been subjected to freezing temperatures which have not been properly winterized as
specified in the owners manual
to Systems that have been left drained of water or without proper preservation fluids
to membrane fouling
if this filtration device is used for commercial and/or rental purposes. This water filtration device is designed
for normal household use. Filter replacement due to fouling may vary with the quality and quantity of
water.
This limited warranty is provided only to the original consumer purchaser or gift recipient of the MAYTAG
WHOLE HOME WATER FILTRATION SYSTEM resident in Canada or the United States and may be
enforced only by such person. Any repair or replacement to the System under this warranty shall not extend
the warranty period. All parts and products removed from the System under this warranty become the
property of Maytag. The owner is responsible for any repairs or replacements that are not covered by this
warranty.
Maytag 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 change. Charges involved as a result of these
product changes do not include freight or foreign, excise municipal or other sales tax. All such freight and
taxes are the responsibility of the consumer.
The foregoing expressed warranties are in substitution for and exclude all other warranties of any kind
whether arising under statute, and tort, or by implication of law or otherwise including, to the full extent as
may be allowed by law, liability for any other representations respecting the MAYTAG WHOLE HOME
WATER FILTRATION SYSTEM, statutory warranties or implied warranties or conditions as to its
merchantability or fitness. No agent, employer, representative of Maytag or Maytag Qualified Dealer, nor
any other person is authorized to modify this warranty in any respect.
ALL IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, WARRANTIES OF
MERCHANTABILITYAND FITNESS FOR PARTICULAR PURPOSE, ARE LIMITED IN DURATION TO
THE PERIOD SPECIFIED ABOVE FOR THE PARTS DESCRIBED IN THIS LIMITED WARRANTY. As a
manufacturer, we do not know the characteristics of your water supply. The quality of water supplies may
vary seasonally or over a period of time. Your water usage may vary as well. Water characteristics can also
change if your drinking water system is moved to a new location. For these reasons, we assume no liability
for the determination of the proper equipment necessary to meet your requirements, and we do not
authorize others to assume such obligations for us. MAYTAG’s OBLIGATIONS UNDER THIS
WARRANTY ARE LIMITED TO THE REPAIR OR REPLACEMENT OF THE FAILED PARTS OF THIS
WHOLE HOME WATER FILTRATION SYSTEM, AND WE ASSUME NO LIABILITY WHATSOEVER FOR
DIRECT, INCIDENTAL, CONSEQUENTIAL, SPECIAL, GENERAL OR OTHER DAMAGES.
The above provisions do not preclude the operation of any applicable provincial or state statute or
regulation, which in certain circumstances may not allow some of the limitations or exclusions described in
these warranty coverage’s.
Should service be required during or after the warranty period, or should you have any questions regarding
how to use your MAYTAG WHOLE HOME WATER FILTRATION SYSTEM, please call 1-800-688-2002 or
visit your Maytag Qualified Dealer.
MAYTAG Whole Home Water Filtration System Owners Manual MA1-5
November 2003
41
The MAYTAG Whole Home Water Filtration System must be;
• kept wet at all times after installation.
• winterized prior to temperatures falling below 0°C (32 F).
• tested annually using the integrity test.
• operated with a prefilter.
Failure to do so may cause System to dry and become damaged, which may lead to
personal injury, and/or physical damage and will void any warranty.
MAYTAG Whole Home Water Filtration System Owners Manual MA1-5
November 2003
42