Maytag mwf4100aws Replacing the External Sediment Prefilter Cartridge, Fill and Flush for 30 min

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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

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Contents Table of Contents Important see safety warnings and cautions insideDealer and System Information Thank you…Safety Instructions Using this Manual …Service and Maintenance Safety Operational SafetyWinter Storage Other Safety PrecautionsPhoto Models MWF4200AWS and MWF4300AWS Certifications and TestingModel MWF4100AWS Legal Disclaimer ServiceTrademarks System Description Replacement PartsStartup of a new Maytag Whole Home Water Filtration System Maintenance ScheduleSanitizing Your Household Distribution System Model 41004200 4300 Required service Comments Every 6 mo Every 12 MoMWF4300AWS Drain the System for 1 minute Shut off waterPrefilter CleaningRemove the cap and internal prefilter from the System Stainless SteelRe-install Internal Model Cleaning Chemical UsedSoak 60 min Fill and Flush for 30 min Replacing the External Sediment Prefilter CartridgeStopcock Page Base Controller Models MWF4100AWS and MWF4200AWS Setting the ControllerAdvanced Controller Model MWF4300AWS Choosing a Controller ProgramBase Controller Advanced Controller Winterization ProcedureNovember Drain line components for all models System Before Winter Freeze-up Inlet line components for MWF4300AWSNovember Spring startup and cleansing Prefilter November Cleaning the Stainless Steel Casing Annual Maintenance ChecklistFrequently Asked Questions What can be done to increase my water pressure? Possible causes of low water pressure Problem SolutionDoes the System require electricity? Does the System affect the water pressure?How much water is used for flushing? What happens if the power goes out?How long does the automatic cleaning cycle take? What are the maintenance requirements?Can it be shut down in winter? How long does the Carbon Prefilter last?What happens if there is a boil water alert in my area? November Section Problem/Situation Correction/Action System TroubleshootingSection Problem/Situation Correction/Action System 41/6 34/9Filtration System Warranty Schedule Suggested List Maytag Whole Home Water Filtration System Limited WarrantyPro-rated cost to the homeowner as a % November November