Maytag MDC4650AW Series Service Manual Download Page 43 | Manualshive

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©2006 Maytag Services

16026945

B-5

What Can and Cannot Be Washed

Wooden Items

Most tableware, cookware and flatware can safely be washed in your dishwasher. Check with the manufacturer.

Yes, except anodized.

No

Yes, except antique or
hand-painted.

Yes, except antique or
delicate crystal.

Not recommended.

Yes

No

No

Yes, top rack, except
disposable plastic
items.

Yes

No, if has commercial
“darkening”.

No

High water temperature and detergents may affect finish.

Seasoning will be removed, and iron will rust.

Always check manufacturer’s recommendation before washing.
Antique, hand-painted or over-the-glaze patterns may fade. Gold
leaf may discolor.

Always check manufacturer’s recommendation

before

washing.

Some types of leaded crystal may etch with repeated washings.

May leave a dingy deposit or stain on dishwasher interior.

A specialty glass called milk glass can yellow with repeated
dishwasher washing.

Will discolor.

Always check manufacturer’s recommendation

before

washing.

Plastics vary in their capacity to withstand high water
temperatures and detergents. Disposable plastic items are not
dishwasher safe for this reason.

Run a

Rinse Only

cycle (select models) if not washing

immediately. Prolonged contact with foods containing salt,
vinegar, milk products or juice could damage finish.

Always check manufacturer’s recommendation

before

washing.

Run a

Rinse Only

cycle (select models) if not washing

immediately. Prolonged contact with food containing salt, acid or
sulfide (eggs, mayonnaise and seafood) could damage finish.
Commercial “darkening” may be removed by detergent.

Wood may warp, crack or discolor.

Gold-Plated

Flatware

Glass

Crystal

Cast Iron

Aluminum

China/Stoneware

Pewter, Tin

Stainless Steel

Plastics

Sterling Silver or

Silverplate

Filters

MATERIAL

DISHWASHER SAFE?

SPECIAL INFORMATION

Electrical Grounding Instructions

- Portable models are

equipped with a (three-prong) grounding plug for your
protection against shock hazard and should be plugged
directly into a properly grounded receptacle.

Do not

cut or

remove the grounding prong from this plug.

WARNING

Important Safety Instructions

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Summary of Contents for MDC4650AW Series

Page 1: ...n specific models This manual includes but is not limited to the following Service This manual is to be used by qualified appliance technicians only Maytag does not assume any responsibility for property damage or personal injury for improper service procedures done by an unqualified person 16026945 March 2006 MDC4650AW ...

Page 2: ... or death disconnect power before working servicing on appliance to avoid electrical shock To locate an authorized servicer please consult your telephone book or the dealer from whom you purchased this product For further assistance please contact Customer Service Support Center CAIR Center in Canada 1 800 688 2002 Amana Canada Product 1 866 587 2002 Customer Assistance Information Resource CAIR C...

Page 3: ...nt 13 Appliance Test Meter 13 Continuity Testing 13 Digital Test Meter 13 Voltage Checks 14 Motor Test Cord 14 Grounding Polarity 14 Electrical Tests Water Valve 15 Wax Motor Check Dispenser 15 Wax Motor Check Vent 16 Disassembly Procedures Technical Sheet 17 Foil Bottom 17 Wood Top 18 Toe Panel 18 Cabinet 18 Faucet 19 Retainer Faucet Coupler 19 Casters 19 Inner Door Panel 20 Detergent Rinse Dispe...

Page 4: ...ock Grounding wires and wires colored like grounding wires are NOT to be used as current carrying conductors Standard accepted color coding for ground wires is green or green with a yellow stripe Grounding wires should not be removed from individual components while servicing unless component is to be removed and replaced Replace all removed grounding wires before completing service WARNING To avo...

Page 5: ...these instructions can result in death serious injury fire or electrical shock MISE Á LA TERRE Cet appareil doit être relié à la terre conformément aux codes électriques locaux et ou nationaux AVERTISSEMENT La résistance la pompe de vidange l attache du hamais la monture de distributeur et l électrovanne ne sont pas reliés à la terre intentionnellement et peuvent présenter des risques d électrocut...

Page 6: ...é bra n c h é Le s con de nsa teu rs d e la co mm an de p eu ve n t res te r s ou s te ns io n u ne f ois l ap pa rei l dé br an c hé L e non r e s p e c t de c es c on sig n es pe u t e nt ra îne r l a m or t de s ble ss u res g ra v e s l i nce n d ie ou l éle c t r oc uti on Important Safety Information WARNING Disconnect power before servicing Electronic control is energized at all times until...

Page 7: ...or visit the Web Site at www amana com For Maytag Jenn Air product call 1 800 462 9824 or visit the Web Site at www maytag com or www jennair com For Hoover product call 1 800 944 9200 or visit the Web Site at www hoover com For product in Canada call 1 866 587 2002 or visit the Web Sites at www amana com or www maytag com or www jennair com Warranty service must be performed by an authorized serv...

Page 8: ...General Information 8 16026945 2006 Maytag Services ...

Page 9: ... necessary See section 5 Float Switch Check Float Switch for continuity with the Float in the up position If continuity is present and Float moves up and down freely replace Float Switch WARNING To avoid risk of electrical shock personal injury or death disconnect electrical power source to unit and discharge capacitor through a 10 000 ohm resistor before attempting to service unless test procedur...

Page 10: ...k for loose or frayed wire terminal connections Check for broken wire within harness Repair or replace as necessary Troubleshooting WARNING To avoid risk of electrical shock personal injury or death disconnect electrical power source to unit and discharge capacitor through a 10 000 ohm resistor before attempting to service unless test procedures require power to be connected Ensure all ground wire...

Page 11: ...ischarge capacitor through a 10 000 ohm resistor before attempting to service unless test procedures require power to be connected Ensure all ground wires are connected before certifying unit as repaired and or operational Noise Banging Check for loose SprayArms Check for dishes interfering with SprayArm rotation See loading information in the User s Guide at the end of this manual Hammering Chatt...

Page 12: ...rocedures require power to be connected Ensure all ground wires are connected before certifying unit as repaired and or operational Will Not Drain Drain Motor Check Drain Motor circuit See data listed on the Technical Sheet located behind Toe Panel Will Not Dry Vent Assembly Check VentAssembly for proper operation Check Wax Motor Heating Element Check Heating Element circuit See data listed on the...

Page 13: ... of personal injury or death due to electrical shock Always be sure the power has been disconnected before making resistance measurements Failure to do so will also result in damage to your meter Internal batteries provide all the power needed to make resistance checks They should be checked at least once a year and replaced as needed Continuity Testing is a process of eliminating electrical compo...

Page 14: ...n increased mechanical or electrical load NOTE Overloads on a circuit breaker or fuse can be traced to the product being tested or the circuit breaker or fuse by checking the products current draw If the amperage reading is less than the breaker reading the breaker or fuse box is at fault Use of Ammeter on dishwasher 1 Motor Current the reading can be taken at the leads on the motor start relay or...

Page 15: ...d into a properly grounded receptacle Always make connection to components before plugging test cord into receptacle Water Valve Test The Water Valve may be checked without removing it from the Dishwasher To check the Water Valve for operation hook up the test cord as follows Wax Motor Check Detergent Rinse Aid Dispenser A single Wax Motor is used to activate both the release of the Detergent Cup ...

Page 16: ...rce the Vent Flap tight against the vent opening in approximately 45 60 seconds When power is removed from the Wax Motor the plunger should retract along with the Vent Flap opening the vent WARNING To avoid risk of personal injury or death due to electrical shock Disconnect electrical power to dishwasher before servicing Always plug test cord into a properly grounded receptacle Always make connect...

Page 17: ...onent Specifications Manual Function Test Field Service Test Electrical Schematic WARNING To avoid risk of personal injury or death due to electrical shock ground wires and wires colored like ground wires are NOT to be used as current carrying conductors The standard accepted color coding for ground wires is green or green with a yellow stripe Electrical components such as the water valve and moto...

Page 18: ...uch as superior moisture resistance greater stain resistance durability and very low maintenance 1 Disconnect power to the machine 2 Remove the 2 screws securing the top to the mounting flanges positioned under the top in front 3 Carefully slide top forward to disengage spacer washers from slots in the rear of the cabinet flanges Toe Panel Removal 1 Disconnect power to the machine 2 The Toe Panel ...

Page 19: ...filling and draining the portable dishwasher It connects to a special adapter which in turn is connected to a faucet at a sink When the dishwasher is not in use the faucet coupler is stored in a retainer on the rear of the dishwasher cabinet 1 Disconnect power to the machine 2 Remove Wood Top see Wood Top removal procedure 3 Remove Foil Bottom see Foil Bottom removal procedure 4 Disconnect power c...

Page 20: ...er and Vent Assembly Removal 1 Disconnect power to the machine 2 Open the Dishwasher door 3 Remove the 11 Torx screws along the sides and top of the Inner Door Panel 4 Separate the Inner Door Panel from the Outer Door 5 Disconnect wires from the Vent and Dispenser Wax Motors before pulling the Inner Door Panel away from the Dishwasher Detergent Rinse Dispenser Mechanism and Reservoir Checking Oper...

Page 21: ...spenser Removal 1 Disconnect power to the machine 2 Remove the Inner Door Panel see Inner Door Panel removal procedure 3 Remove the 6 mounting screws securing the Detergent Dispenser mounting bracket 4 To remove the Wax Motor pry out of retainer NOTE It is not necessary to remove Detergent Dispenser before removing Wax Motor Vent The Vent is located on the Inner Door Panel to allow moisture to be ...

Page 22: ... of either or both switches will result in rendering the Dishwasher inoperative NOTE Door Switches require no field adjustment Removal 1 Disconnect power to the machine 2 Remove the Inner Door Panel see Inner Door Panel removal procedure 3 Lift Door Latch Assembly out Switch Removal 1 Disconnect power to the machine 2 Remove the Inner Door Panel see Inner Door Panel removal procedure 3 Remove Door...

Page 23: ... tub wheel shaft with Torx driver NOTE Tub wheel shaft contains a small steel washer Door Latch Strike The Door Latch serves as a mechanical actuator for Door Switch operation and provides door tension for proper door seal Removal 1 Disconnect power to the machine 2 Remove Wood Top see Wood Top removal procedure 3 Remove Torx screw securing Strike to Tub Control Panel The Membrane Facia on the Con...

Page 24: ...er to the machine 2 Remove the Inner Door Panel see Inner Door Panel removal procedure 3 Remove 2 screws securing PC Board Base to Inner Door Panel 4 Lift off Latch Assembly 5 Lay Outer Door to it s fully open position 6 Prop door open by inserting an object into the 1 8 dia hole in hinge bracket Door Hinge and Support Removal 1 Disconnect power to the machine 2 Remove the Outer Door Panel see Out...

Page 25: ...ring tension is achieved by positioning the spring in the slots provided The higher position increases spring tension NOTE Always point spring hooks toward the Dishwasher Door Spring and Component Replacement NOTE Always point spring hooks toward the Dishwasher 1 Disconnect power to the machine 2 Remove Cabinet see Cabinet removal procedure 3 Attach Door Cable Link to Door Hinge 4 Attach Cable to ...

Page 26: ...ly up the rear and along the top of the Dishwasher Tub The Manifold is attached to the Tub with a clip Removal 1 Disconnect power to the machine 2 Remove Racks Stops and Rack Assemblies 3 Spread Manifold Clips located on the back and top of Tub 4 Tip top of Manifold towards door opening slightly Disengage the snap located on the bottom of the Manifold locking the Manifold to the Discharge Housing ...

Page 27: ...t Wash Arm out of Dishwasher Air Water Inlet The Air Water Inlet is located on the left side of the Tub and mounted to the exterior of Tub Removal 1 Disconnect power to the machine 2 Remove Cabinet see Cabinet removal procedure 3 Remove the Air Water Inlet Cover located on the left inside wall of Tub Pull cover straight out to remove 4 Carefully pull back insulation from the left side of the Tub 5...

Page 28: ... up the left side and across the top 5 Check for proper Door Latch adjustment to ensure proper door sealing Float The FloatAssembly controls the amount of water fill The Float Switch is wired in series with the Water Valve When the Float Switch OPENS the electrical circuit to the Water Valve is opened causing the Water Valve to shut off A normal fill is when water makes contact with heating elemen...

Page 29: ...ontinuity check across terminals 4 The resistance of the element should be approximately 22 ohms If OPEN replace element 5 Perform continuity check from each terminal to the element sheath NO continuity should be present If continuity is present replace the element Removal 1 Disconnect power to the machine 2 Remove Foil Bottom see Foil Bottom removal procedure 3 Locate element terminals and remove...

Page 30: ...fer to Technical Data Sheet Removal 1 Disconnect power to the machine 2 Remove Foil Bottom see Foil Bottom removal procedure 3 Press down on spring clip to release from Tub and rotate till clip unlocks 4 Remove wires from thermostat NOTE When reinstalling proper location and wiring of thermostat s is critical Water Valve The valve is located behind the Support and Toe Panel mounted to the left sid...

Page 31: ...the Water Valve NOTE The Water Valve is a non repairable component The only servicing required is to clean the Inlet Screen if needed Inlet Screen Sediment on the Inlet Screen can hinder water flow through the Water Valve Cleaning 1 Disconnect power to the machine 2 Remove Water Valve from the Dishwasher See Water Valve Removal 3 Remove 4 screws securing valve body to Water Inlet Mounting Bracket ...

Page 32: ...Disconnect drain hose from Pump Assembly 5 Remove Torx screw through bushing in Pump Mounting Plate 6 Rotate Pump Assembly to unlock from Tub Wash Motor Assembly The Wash Motor Assembly is designed to provide recirculating filter wash and particle chopping functions for the dishwasher cycles Removal 1 Disconnect power to the machine 2 Remove racks 3 Remove Wash Manifold 4 Loosen Wash Arm Hub and P...

Page 33: ... to service unless test procedures require power to be connected Ensure all ground wires are connected before certifying unit as repaired and or operational 12 Lift off Filter Flowplate Assembly to access Chopper Plate 13 Remove 3 Torx screws to remove Chopper Plate 14 Lift off Chopper 15 Remove Chopper Sleeve by using Impeller as a wrench Lock motor rotation using the access hole provided in back...

Page 34: ...34 16026945 2006 Maytag Services NOTES ...

Page 35: ... 2006 Maytag Services 16026945 A 1 AppendixA ...

Page 36: ...A 2 16026945 2006 Maytag Services NOTES ...

Page 37: ... until it latches Select Rinse Only then press START This will start the dishwasher operation Allow dishwasher to fill wash and drain Be sure dishwasher is oper ating properly Check operation of the dishwasher according to the user s guide Turn faucet off and relieve pressure on hose by depressing relief but ton on the side of faucet coupler Depress thumb release lever and remove coupler See Figur...

Page 38: ...A 4 16026945 2006 Maytag Services NOTES ...

Page 39: ...Care information provided in this service manual is representative of a limited number of models Reference the customer s Use and Care literature included with the product order a copy or consult the manufacturer s website for the specific model www maytag com ...

Page 40: ...B 2 16026945 2006 Maytag Services NOTES ...

Page 41: ...Contents Important Safety Instructions 1 2 What Can Cannot be Washed 2 Operating Tips 3 Loading 4 Dishwasher Use 5 Cycles Options and Lights 6 7 MDB 7 Use Care Guide Care Cleaning 8 Portable Dishwashers 9 Troubleshooting 10 12 Warranty Service 13 ...

Page 42: ... and sized power supply circuit to avoid electrical overload 6 Children should never be permitted to operate or play in with or around this dishwasher 7 To reduce the risk of injury when loading items to be washed sharp or pointed items should be located with the handles up Also load sharp items so they are not likely to damage the door seal 8 Do not touch the heating element on the bottom of the ...

Page 43: ...mendation before washing Plastics vary in their capacity to withstand high water temperatures and detergents Disposable plastic items are not dishwasher safe for this reason Run a Rinse Only cycle select models if not washing immediately Prolonged contact with foods containing salt vinegar milk products or juice could damage finish Always check manufacturer s recommendation before washing Run a Ri...

Page 44: ...START Cancel pad 3 To cancel a running cycle press the START Cancel pad once The dishwasher will drain then shut off To turn the dishwasher off without draining press the START Cancel pad twice To prevent unplanned cycle or option changes these selections are locked in after 1 minute Note If the cycle select pad is pressed after the controls have been locked in the light above the current cycle wi...

Page 45: ...tems in the basket with handles up and some with handles down On models with slotted covers load knives handles up and spoons and forks handles down Be sure that thin finely pointed items do not extend through the basket This could block the lower wash arm Auxiliary Basket select models Use this supplemental basket in the upper or lower rack for loading miscellaneous items and utensils This is als...

Page 46: ...tect the dishwasher parts from the damage that hard water can cause Add recommended amount of detergent to each cup as shown and close the detergent lid Do not use detergent with the Rinse Only select models cycle Leave the detergent lid open when running Rinse Only select models Rinse Aid Regular use of a rinse aid improves drying reduces spotting and filming and reduces moisture left on the dish...

Page 47: ...ds an additional rinse to the cycle which improves results in hard select models water situations Sanitizes dishware When the cycle monitor recognizes that the proper Heavy Wash conditions have been met SANITIZED light will activate at the end of the cycle Normal Wash Sanitization may not be achieved if there is an interruption of the cycle Light Wash power failure or if the incoming water tempera...

Page 48: ...pad the dishwasher will turn off To cancel a Delay When the delay is counting down press the Delay pad again The indicator light will go out and the cycle will start or resume immediately To cancel a Delay and the cycle Press START Cancel once to drain and turn off the dishwasher Or Press START Cancel twice to turn dishwasher off without draining Lights Display select models INDICATOR DESCRIPTION ...

Page 49: ... detergent and water A solution of white vinegar and water Formula 409 Glass and Surface Cleaner or similar multi surface cleaner Do not use products containing chlorine bleach or citric acid Follow with rinse and dry Moderate to heavy soil Soft cloth or damp sponge and Bon Ami Follow with rinse and dry Streaks or fingerprints restore shine Soft cloth and Stainless Steel Magic Spray Discoloration ...

Page 50: ...g a Portable 1 Be sure to turn the water supply off and press the pressure release button before removing the connector 2 Press down on the thumb release and remove the connector from the faucet 3 Push the connector and hoses back into the cabinet recess 4 Unplug the electrical cord and push it back into the cabinet recess Portable Dishwashers Care and Cleaning Clean the cabinet and laminate top w...

Page 51: ...ding sounds may be heard as the internal chopper blade chops hard items like fruit seeds nuts etc Humming during the drain is normal A snap noise is the detergent cup lid hitting the door liner when the dishwasher door is opened at the end of the cycle This is normal Proper installation affects the noise level Sanitize has been selected and the cycle is extended to heat water Check to see that the...

Page 52: ...ged To prevent further etching adjust the detergent amount to match the water hardness stop prewashing and use water heating options only when incoming water temperature is below 120 F 49 C Select Hi Temp Wash Check water temperature Incoming water should be 120 F 49 C Run hot water at the sink before starting the dishwasher Check water hardness and adjust detergent amount accordingly pg 5 Use fre...

Page 53: ...3 4 Plastic and items with non stick surfaces are difficult to dry because they have a porous surface which tends to collect water droplets Towel drying may be necessary Glasses and cups with concave bottoms hold water and require towel drying Locate these items on the more slanted side of the rack for improved results Load dishes according to instructions so they do not strike each other pgs 3 4 ...

Page 54: ...nother warranty applies 9 Consequential or incidental damages sustained by any person as a result of any breach of these warranties Some states do not allow the exclusion or limitation of consequential or incidental damages so the above exclusion may not apply If You Need Service First see the Troubleshooting section in your Use and Care Guide or call the dealer from whom your appliance was purcha...

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