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Freezers

This Base Manual covers general information

Refer to individual Technical Sheet

for information on specific models

This manual includes, but is

not limited to the following:

Amana
AFU1202BW
AFU1505BW
AFU1567BW
AFU1705BW
AFU1767BW
AFU2005BW
AFU2067BW
AQU1525AEW
Maytag
MQU1554AEW
MQU1556AEW
MQU2056ARW
MQU2057AEW

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.

16023585

September 2004

Содержание AFU1202BW

Страница 1: ...owing Amana AFU1202BW AFU1505BW AFU1567BW AFU1705BW AFU1767BW AFU2005BW AFU2067BW AQU1525AEW Maytag MQU1554AEW MQU1556AEW MQU2056ARW MQU2057AEW 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 16023585 September 2004 ...

Страница 2: ...AIRS WARNING To avoid risk of severe personal injury 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 Web Site Telephone Number WWW AMANA COM 1 800 843 0304 W...

Страница 3: ...r Fan No Defrosting Models 21 Testing Freezer Fan Motor 21 Performance Data 22 Troubleshooting 23 25 Disassembly Procedures Replacing Drier 26 Replacing Compressor 26 Replacing Heat Exchanger Refrigerated Shelf Model 27 Replacing Heat Exchanger No Defrosting Models 28 Replacing Freezer Shelving Refrigerated Shelf Models 29 Replacing Freezer Coil No Defrosting Models 30 Replacing Light Switch 31 Re...

Страница 4: ... and type This information is found on the serial plate located on front upper right hand corner of foodliner or on some models exterior back of the outer casing An explanation of coding contained in Type position is shown below Amana Maytag Model Identification A F U 1 2 0 2 B W Color W White Feature Package 1 3 Good 4 6 Better 7 Best Special Features 0 No Auto Defrost 6 Auto Defrost Capacity 12 ...

Страница 5: ...grille Standard Upright Freezer Models Drain plug in bottom front of freezer liner some models Location These recommendations and explanations may help customer receive maximum efficiency from freezer and avoid service calls CAUTION To avoid personal injury wear gloves when installing freezer To avoid property damage protect soft vinyl or other flooring with cardboard rugs or other protective mate...

Страница 6: ...nd of handle Trim retainer notch Trim retainer Handle trim End caps Handle Installation Instructions Leveling 1 Install leveling legs under front corners behind toe grille 2 Level freezer side to side and tilt freezer 1 4 from front to back Turn legs clockwise to raise freezer and counterclockwise to lower freezer If freezer cannot be level due to flooring use shims under rear of freezer cabinet t...

Страница 7: ... you get rid of your old freezer please follow the instructions below to help prevent accidents Before Throwing Away Old Freezers Take off the doors Leave the shelves in place to prevent children from easily climbing inside unit Model Identification Read the Owner s Manual thoroughly This manual provides proper maintenance information for consumers Any questions call the Customer Service Support C...

Страница 8: ...ill not cool Initially set control to 4 Wait 3 hours after connecting power for freezer to reach desired temperatures then add food After 24 hours adjust control as desired 1 is warmest setting and 7 is coldest Set temperatures precisely using a household thermometer that includes temperatures between 5 to 50 F Put thermometer snugly between frozen packages in freezer Wait 5 8 hours If freezer tem...

Страница 9: ...e Freezing Guide Wrapping Use moisture vapor proof materials and seal tightly When lids are furnished follow manufacturer s directions for best results Choose materials which are labeled for freezer use Ordinary waxed paper or butcher paper does not provide proper protection for frozen food Materials not designed for freezer use may give off odors Freezing Guidelines Item Recommended storage times...

Страница 10: ...askets every three months or more frequently if necessary 2 Rinse and dry gaskets thoroughly 3 Apply a light film of petroleum jelly on cabinet hinge side to keep gaskets pliable Care and Cleaning Odor Removal 1 Remove all food 2 Wash all interior surfaces including door floor and walls according to General instructions Pay special attention to corners crevices and grooves Include all accessories ...

Страница 11: ...ace pans of hot water in freezer 6 Wash all interior surfaces including door floor and walls 7 Replace inside drain plug Drain plug must be properly installed for efficient operation Light Bulb some models WARNING To avoid electrical shock which can cause severe personal injury or death disconnect power to freezer before replacing light bulb After replacing light bulb restore power CAUTION To avoi...

Страница 12: ...unds like an electronic clock that snaps in and out of the defrost cycle 8 Insulation Foam insulation is very energy efficient and has excellent insulating capabilities However foam insulation is not as sound absorbent as previously used fiberglass insulation Before Calling For Service Freezer does not operate Confirm temperature control is on Confirm freezer is plugged in Check fuse or circuit br...

Страница 13: ...eezer cooling coil Freezer fan Makes a whirring noise or sounds like rushing air as cold air circulates in the freezer compartment Compressor Runs faster for higher efficiency and has a higher pitched hum or pulsating sound Defrost drain pan Dripping sound is defrost water falling onto drain pan Temperature control Clicks when the compressor starts or stops Defrost timer Automatic timer sounds lik...

Страница 14: ...porator coil 2 Test point 2 is attached to outlet on the evaporator coil 3 Test point 3 is approximately 6 8 inches from suction port of compressor on the suction line 4 Thermocouple tips should be attached securely to the locations specified 5 Do not test during initial pull down Allow one complete OFF cycle or a balanced temperature condition to occur before proceeding 6 Unit must operate a mini...

Страница 15: ...gauges Line valve and tubing Access fitting should be prepared as follows Line valve Pressure regulator Gauges Nitrogen Tank and Fittings Suction Process From condensor To condensor Discharge Tube process Compressor Cutting or Unsoldering Points Refrigerated Shelf Models Discharge From condensor Tube process To condensor To evaporater Suction Condensor bottom external Compressor Cutting or Unsolde...

Страница 16: ...r testing or replacement of a suspected failed component All electrical components are grounded to the cabinet The green center conductor of three wire lead cord is also attached to the cabinet to provide a grounding circuit when the lead cord is plugged into a properly grounded electrical outlet After replacing an electrical component always verify the ground wire is reconnected The electrical ou...

Страница 17: ...r for grounds Attach one ohmmeter lead to compressor case Attach second ohmmeter lead to C then S then M terminals on compressor Ohmmeter indicates open on each terminal Capacitor Capacitor can be tested by an analog meter Attach one meter lead to one terminal and once the other meter lead touches the second terminal meter will indicate a reading but will discharge through the meter and indicate n...

Страница 18: ...nder the flange of the switch and carefully remove Short across the light switch terminals If light operates switch has failed If light fails to operate either the lamp socket or wiring has failed The lamp socket in the cabinet can be removed in the following manner 1 Disconnect power cord from electrical outlet 2 On refrigerated shelf models remove screws securing top freezer plate and pull the p...

Страница 19: ...eze the bulb on thermocouple to the freezer shelf near control feeler tube thermal contact point 2 Set control halfway between Off and MAX Cool Close cabinet door and wait for compressor to run through 2 or 3 complete cycles 3 If cut in and cut out temperatures are not within 2 or 3 degrees of those specified below replace the control Temperature Control Auto Defrost Warm 45 cut in Calibration Pt ...

Страница 20: ...ost that collected during the proceeding 12 hour period when operating properly Failure to perform this function will eventually cause an ice build up between the coil fins blockage in air flow and unsatisfactory refrigeration Defrost heater extends across the bottom of freezer coil above the built in drain trough Heater is clamped at both ends to a shield Shield is attached to coil mounting panel...

Страница 21: ...taneously with the compressor If fan fails to operate or runs erratically reduced air circulation will cause unsatisfactory temperatures throughout the freezer Freezer fan is located above freezer coil and is mounted inside an opening in the freezer liner back White White Orange Green Red Circulating Fan and Wiring With Coil Cover Removed Testing Freezer Fan Motor Remove screws from coil cover and...

Страница 22: ...8 1 1 0 8 1 1 12 uF 210 V 15 2 Foam 70 90 110 95 115 100 120 105 125 35 45 55 65 90 100 95 115 125 145 165 185 4 2 3 1 3 1 0 9 1 2 0 9 1 2 1 0 1 3 12 uF 210 V 16 8 Foam 70 90 110 105 125 110 130 115 135 40 50 55 65 90 100 95 115 130 150 165 185 4 2 3 1 2 1 0 9 1 2 0 9 1 2 1 0 1 3 12 uF 210 V 19 6 Foam 70 90 110 120 140 125 145 130 150 40 50 55 65 90 100 100 120 135 155 175 195 4 2 3 1 1 1 1 0 1 3 ...

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Страница 26: ...TubeInsertion 9 Cut the inlet tube on the new drier 10 Snap off the scored end of replacement drier with your fingers 11 Install new drier and solder all joints Use sil fos on all copper to copper joints On copper to steel joints silver solder with proper flux must be used Excess flux must be wiped off after soldering 12 Visually check all soldered joints evacuate and recharge the system 13 Test r...

Страница 27: ...t exchanger tubing to slide tube through entry hole from inside the cabinet 8 Remove clamp retaining the control feeler tube to underside of second shelf counting downward 9 Carefully bend feeler tube down against liner side to be out of the way 10 Remove screws securing top freezer plate to liner top As front edge of plate drops clearing the liner 11 Carefully remove each shelf from food liner su...

Страница 28: ...ing wire White White Orange Green Red Circulating Fan and Wiring With Coil Cover Removed 8 Remove styrofoam air block from each end of the coil 9 Disconnect defrost heater lead from spade terminal on fan motor 10 Spade connector is used to join the defrost heater lead to the lead in wire Separate these two wires at the spade connector Release lead from the two clips on coil mounting panel 11 Disco...

Страница 29: ...2 Install service valve as close as possible to the tip of process tube for easy pinch off after recharging the system 3 Connect a hose to service valve and capture the charge NOTE Effective July 1 1992 before opening any refrigeration system it is the responsibility of the service technician to capture the refrigerant for safe disposal 4 Remove butyl sealer from tube entry hole in the cabinet bac...

Страница 30: ...em 3 Connect a hose to service valve and capture the charge NOTE Effective July 1 1992 before opening any refrigeration system it is the responsibility of the service technician to capture the refrigerant for safe disposal 4 Remove butyl sealer from tube entry hole in the cabinet back 5 Clean approximately three inches 76 mm of the heat exchanger tubing at the compressor stub Unsolder at the joint...

Страница 31: ...at to freezer coil header 29 Connect green grounding wire to fan motor and to freezer coil cover 30 Test run the unit to verify proper operation 31 Pinch process tube and cut off the service valve Solder the joint and test for leaks Replacing Light Switch 1 Unplug line cord from electrical outlet and pry light switch from liner 2 Pull lead wires out far enough to disconnect connectors 3 Connect ne...

Страница 32: ...hermostat and Mounting Clip Replacing Freezer Fan Motor Remove screws from coil cover and disconnect ground wire from cover Remove freezer coil cover Before checking fan circuit for failures spin the fan blade to verify nothing has lodged against it which could prevent normal fan operation If blade spins freely check fan motor as follows 1 Unplug line cord 2 Attach test cord leads to fan motor lea...

Страница 33: ...bly consists of outer door panel bezel and nameplate insert door handle and insert door lock assembly if equipped hinge bushings fiberglass insulation inner door liner door shelf trim and door seal gasket Inner door liner Door shelf trim Door gasket Bushing Washer Top door hinge Tapping plate Outer door panel Bezel Serial plate Door handle Insert Bushing Washer Lower door hinge Spacer Bottom hinge...

Страница 34: ...TE Do not over tighten screws this could crack liner or cause screw head to pull through the hole 3 Always align door Door Handle Door handle and insert are attached to outer door panel by mounting screws which are located under the insert Removing the Door Handle 1 Bow insert slightly and unhook top and bottom from door handle 2 Remove mounting screws which secure the handle NOTE Longer mounting ...

Страница 35: ... gasket and close door several times Examine the cabinet flange for transfer of chalk or dampness Failure of the transfer indicates areas of poor seal Improving Gasket Seal In order for gasket to compress evenly around the entire door it must make contact at the top and bottom at the same time For this reason the door should not toe in or toe out To correct a toe in or toe out condition verify hin...

Страница 36: ...l knob Temperature control plate Temperature control Light switch Cabinet shell Light assembly Cabinet inner liner Cabinet leveller Wire gate Gate brackets Drain tube cap Drain tube and grommet Temperature control knob Temperature control plate Temperature control Shelve Evaportator cover Cover gasket Gate brackets Wire gate Drain tube and grommet Cabinet inner liner Light assembly Cabinet shell L...

Страница 37: ...h depends upon the amount of moisture in the system If compressor is operating but evaporator coil or refrigerated shelves are not refrigerated stop the compressor and listen for refrigerant surging through tubing If a gurgling sound is heard capillary tube is not restricted Check for a leak or check operating pressures When first opening the door no refrigerant circulating sound is heard but afte...

Страница 38: ...ressures will not unload and balance with the low side within the prescribed seven to ten minutes after the compressor is stopped High Side low pressure Low Side lower pressure possible vacuum Wattage lower than normal Indicates a leak in the high side of the system Both gauges will show progressively less pressure High Side much higher pressure Low Side slightly lower pressure Wattage higher than...

Страница 39: ...y raise temperature of frozen food Larger unfrozen food loads may also result in longer freezing times 2 Excessive Lid Opening Freezer is not designed to be operated as a refrigerator Length of time and number of lid openings should be kept to minimum Compressor On And Off Periods Variations in compressor cycles per hour are affected by factors such as usage ambient conditions electric power suppl...

Страница 40: ...sen noticeably a Voltage under 10 VAC b Voltage over 127 VAC c Lid is being opened frequently so compressor OFF time is too short for pressure equalization d Installation condition is causing compressor to run hotter than usual for example lack of air circulation around freezer shell e Overload thermostat has failed 4 Continuous running a Freezer has been filled with unfrozen or warm food b Room t...

Страница 41: ... 3 Although compressor is running continuously food liner temperature will rise 4 Low suction pressures External Or Internal Leak Internal leaks are refrigerant leaks inside foam insulation All other leaks are considered external Once presence of a leak has been determined from symptoms described above locate leak First test all joints in compressor compartment Hold nozzle of detector on every joi...

Страница 42: ... from compressor replace oil rather than adding oil Low side leak repairs of HFC134a systems are different from those of CFC 12 systems Ester oils used in HFC134a systems are so hydroscopic that by the time an inadequate system performance is detected oil will be saturated with moisture CFC12 has much higher tolerance to system processing materials such as drawing compounds rust inhibitors and cle...

Страница 43: ... effect Same Liquid exposure to skin Can cause frostbite Same Vapor exposure to eye Very slight irritant Same Liquid exposure to eye Can cause frostbite Same Above minimum exposure limit Can cause Asphyxiation Tachycardis and Cardia Arrhythmias Same Safety and handling Wear appropriate skin and eye protection Use with adequate ventilation Same Spill management Remove or extinguish ignition or comb...

Страница 44: ...nder Line piercing saddle valve Seals must be HFC134a and ester oil compatible Line piercing valves may be used for diagnosis but are not suitable for evacuation or charging due to minute holes pierced in tubing Do not leave mechanical access valves on system Valves eventually will leak Molecules of HFC134a are smaller than other refrigerants and will leak where other refrigerants would not Swagin...

Страница 45: ...om mounting rails and transfer rubber grommets to replacement compressor 7 Set replacement compressor into position and install retaining clips 8 Remove all rubber plugs Clean stubs of compressor and compare the size of tubing to stubs of replacement compressor It may be necessary to swag copper tubing to make the joints 9 Install a 6 inch 152 mm copper tube to low side process tube on compressor ...

Страница 46: ...micron rises above 1000 micron level and stabilizes open valve A to vacuum pump and continue evacuating If micron reading rises rapidly and does not stabilize a leak still exists in system Close valve A to vacuum pump and C to thermistor vacuum gauge Invert charging cylinder and open charging cylinder valve F to add partial charge for leak checking With leak detector check manifold connections and...

Страница 47: ...with new refrigerant NOTE Do not use captured or recycled refrigerant in units Captured or recycled refrigerant voids any compressor manufacturers warranty Brazing CAUTION Brazing requires high temperatures Take all necessary precautions to protect against personal injury and property damage Satisfactory results require cleanliness experience and use of proper materials and equipment Connections t...

Страница 48: ...urize the system to a minimum of 75 PSIG by running the compressor for high side testing To pressurise the low side allow entire system to warm up to room temperature If pressure is low enough a leak test will be impossible to perform Install a service valve to compressor process tube and check pressure Recover remaining refrigerant Separate and pressurize high low side independently allowing unit...

Страница 49: ...the cabinet liner by utilising special snap nuts clips and other fasteners interior light and switch cold control assembly and cover evaporator coil and cover no frost models shelves and gate mounting hardware and drain tube and grommet Once system components and cabinet liner have been assembled to the cabinet shell polyurethane insulation is foamed in to fill the void between the shell and liner...

Страница 50: ...tag Services Control Black Black Black White Red Overload protector Compressor Interior light Light switch Ground schematic To 115 VAC plug Ground White 1 Outer case 2 Compressor 3 Control 4 Light plate C PTC relay R S Capacitor Control Black Black Black Black White White Compressor Red Ground Red Green Light Switch Light Plate ground Light No Interior Light Optional Red Green Black Service Cord C...

Страница 51: ...CONTROL BLUE 4 2 1 4000 OHMS YELLOW ORANGE 34 6 37 5 OHMS DEFROST HEATER DEFROST THERMOSTAT WHITE DEFROST TIMER RED 112 4 OHMS EVAPORATOR FAN MOTOR LAMP REFRIGERATOR CABINET BLACK OVERLOAD PROTECTOR COMPRESSOR RELAY CAPACITOR IDENTIFIED CONDUCTOR LH LV LN POWER SUPPLY GREEN GROUND RUN START RED RED BLACK WHITE WHITE WHITE DOOR SWITCH WHITE WHITE WHITE WHITE C R S 3 2 BLACK BLACK 3 1 2 6 3 4 5 Oute...

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