Amana Menumaster DEL10D Service Manual

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.

MENUMASTER

C O M M E R C I A L M I C R O W A V E O V E N

This Base Manual covers general information.

International Countertop Commercial Microwave Ovens

Refer to individual Technical Sheet

for information on specific models.

This manual includes, but is

not limited to the following:

LD510D P1329704M LD510P P1329705M DEL10D P1329706M DEL10E P1329707M

16022150

Revision 0

January 2003

Important Information

Important Notices for Servicers and Consumers

Maytag will not be responsible for personal injury or property damage from improper service procedures. Pride and workmanship go into every product to provide our customers with quality products. It is possible, however, that during its lifetime a product may require service. Products should be serviced only by a qualified service technician who is familiar with the safety procedures required in the repair and who is equipped with the proper tools, parts, testing instruments and the appropriate service information. IT IS THE TECHNICIANS RESPONSIBLITY TO REVIEW ALL

APPROPRIATE SERVICE INFORMATION BEFORE BEGINNING REPAIRS.

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:

WARNING

Customer Service Support Center

CAIR Center

Web Site Telephone Number

WWW.AMANA.COM ............................................ 1-800-843-0304

WWW.JENNAIR.COM .......................................... 1-800-536-6247

WWW.MAYTAG.COM .......................................... 1-800-688-9900

CAIR Center in Canada ........................................ 1-800-688-2002

Amana Canada Product ........................................ 1-866-587-2002

Recognize Safety Symbols, Words, and Labels

DANGER

DANGER—Immediate hazards which WILL result in severe personal injury or death.

WARNING!

WARNING—Hazards or unsafe practices which COULD result in severe personal injury or death.

CAUTION!

CAUTION—Hazards or unsafe practices which COULD result in minor personal injury, product or property

damage.

Table of Contents

Important Information..................................................2

Important Safety Information .................................... 4-8

General Information

Placement of the Oven ............................................9

Radio Interference...................................................9

Earthing Instructions ...............................................9

Microwave Oven Features ...................................... 10

Troubleshooting Procedures .................................11-16

Component Testing Procedures ................................ 17

Microwave Power Test Procedures

Power Test (Traditional Test Method) ...................... 19

Microwave Leakage Testing

Equipment ........................................................... 20

Procedure For Measuring Radiation Leakage .......... 20

Measurement With the Outer Panel Removed ......... 20

Measurement With a Fully Assembled Oven ........... 20

Record Keeping and Notification After Measurement 20

Disassembly Procedures

Disconnecting Wire Terminals................................ 21

Door Assembly ..................................................... 21

Door Disassembly ................................................ 22

Outer Case .......................................................... 22

Control Panel ....................................................... 22

Controller Removal (Electronic Models) ................... 23

Key Pad Removal ................................................. 23

Timer Removal (Dial Models) ................................. 23

Interlock Switches ................................................ 24

High Voltage Capacitor .......................................... 24

Diode ................................................................... 25

Transformer .......................................................... 25

Fuse Block / Filter Assembly................................. 25

Fuse.................................................................... 25

Magnetron............................................................ 25

Fan Motor ............................................................ 26

Cavity Thermostat ................................................. 26

Light Socket / Bulb Assembly................................ 26

Stirrer Motor ......................................................... 26

Important Safety Information

CAUTION

Read the following information to avoid possible

exposure to microwave radiation:

The basic design of the Amana or Menumaster microwave ovens make it an inherently safe device to both user and servicer. However, there are some precautions which should be followed when servicing the microwave oven to maintain this safety. These are as follows:

1. Always operate the unit from an adequately earthed

outlet. Do not operate on a two-wire extension cord.

2. Before servicing the unit (if unit is operable), perform

the microwave leakage test.

3. The oven should never be operated if the door does

not fit properly against the seal, the hinges or hinge bearings are damaged or broken; the choke is damaged, (pieces missing, etc.); or any other visible damage can be noted. Check the choke area to ensure that this area is clean and free of all foreign matter.

4. If the oven operates with the door open and

produces microwave energy , take the following

steps. A. Tell the user not to operate the oven. B. Contact Maytag immediately.

5. Always have the oven disconnected when the outer case is removed except when making the "live" tests called for in this Service Manual. Do not reach into the equipment area while the unit is energized. Make all connections for the test and check them for tightness before plugging the cord into the outlet.

6. Always earth the capacitors on the magnetron filter box and H. V. Capacitor with an insulated-handle screwdriver before working in the high voltage area of the equipment compartment. Some types of failures will leave a charge in these capacitors and the discharge could cause a reflex action which could make you injure yourself.

7. In the area of the transformer, capacitor , diode, and magnetron there is HIGH VOLTAGE. When the unit is operating, keep this area clean and free of anything which could possibly cause an arc or earthing, etc.

8. Do not for any reason defeat the interlock switches. There is no valid reason for this action at any time; nor will it be condoned by Maytag.

9. IMPORTANT: Before returning a microwave to a customer, check for proper switch interlock action. The primary and secondary switches MUST open when the door is actuated. The monitor switch MUST close at a opened.

10.Before returning a microwave to a customer, verify the door spacing is reasonably uniform along the top, bottom, and sides, and that it measures

/64–inch (0.5 mm) or less.

1 1.The Amana or Menumaster microwave oven should

never be operated with:

• Any components removed and/or bypassed.

• Any of the safety interlocks found to be

defective.

• Any of the seal surfaces defective, missing,

or damaged.

12.To ensure that the unit does not emit excessive microwave leakage and to meet the Department of Health Human Service guidelines, check the oven for microwave leakage using Narda Model 8110 B, Holaday HI1501, HI1510, or HI1710 leakage monitor as outlined in the instructions. The maximum leakage level allowed is 4mW/cm2.

13.If servicer encounters an emission reading over 4 mw/cm2 the servicer is to cease repair and contact the Amana Service Department immediately for further direction. Amana Appliances will contact the proper Government Agency upon verification of the test results.

/64–inch (0.5 mm) when the door is

Important Safety Information

WARNING

Precautions to be observed before and during servicing to avoid possible exposure to excessive microwave energy , or electrical shock disconnect power to oven.

(A) Do not operate or allow oven to be operated with

door open.

(B ) Make the following safety checks on all ovens to

be serviced before activating the magnetron or other microwave source, and make repairs as necessary:

• Interlock operation

• Proper door closing

• Seal and sealing surfaces (arcing, wear, and other damage)

• Damage to or loosening of hinges and latches

• Evidence of dropping or abuse

(C ) Before turning on microwave power for any service

test or inspection within the microwave generating compartments, check the magnetron, waveguide or transmission line, and cavity for proper alignment, integrity , and connections.

(D ) Any defective or misadjusted components in the

interlock, monitor, door seal, and microwave generation and transmission systems shall be repaired, replaced or adjusted by procedures described in this manual before oven is released to the consumer.

(E) Check microwave leakage to verify compliance with

the federal performance standard should be performed on each oven prior to release to the consumer.

Wiring

Good service practice is to never route wiring over terminals and/or sharp edges. This applies to any wiring without regard to the circuit voltage. Wire insulation material and thickness is designed and regulated for electrical spacing purpose only , but cannot always be relied upon because of possible cuts and/or abrasions, which can occur during servicing.

WARNING

T o avoid risk of electrical shock, personal injury or death, make sure these earthing instructions are followed.

Earthing Instructions

WARNING

Do not remove earthing prong when installing earthed appliance in a home or business that does not have three wire earthing receptacle, under no condition is earthing prong to be cut off or removed. It is the personal responsibility of the consumer to contact a qualified electrician and have properly earthed three prong wall receptacle installed in accordance with appropriate electrical codes

Should a two prong adapter plug be required temporarily , it is the personal responsibility of the consumer to have it replaced with properly earthed three prong receptacle or the two prong adapter properly earthed by a qualified electrician in accordance with appropriate electrical codes.

Servicing of Earthed Products

The standard accepted color coding for earthing wires is GREEN or GREEN WITH YELLOW STRIPE. These earth leads are NOT to be used as current carrying conductors. It is extremely important that the technician replace any and all earths prior to completion of the service call. Under no condition should earth wire be left off causing a potential hazard to technicians and consumer.

General Information

Placement of the Oven

Do not install microwave next to or above source of heat, such as a deep fat fryer. This could cause the microwave to operate improperly and could shorten the life of electrical components.

Install microwave on a level countertop surface. Do not block or obstruct oven filter. Allow access for

cleaning. All air vents must be kept clear during cooking. If air

vents are covered during operation the oven may overheat. In this case, a sensitive thermal safety device automatically turns the oven off. The oven will be inoperable until the oven has cooled sufficiently.

Radio Interference

Microwave oven operation may cause interference to radio, television, or similar equipment. Reduce or eliminate interference by doing the following:

• Clean the door and sealing surfaces of microwave oven according to instructions in “Care and Cleaning” section.

• Place radio, television, etc. as far as possible from the microwave oven.

• Use a properly installed antenna on radio, television, etc. to obtain stronger signal reception.

Earthing Instructions

This appliance MUST be earthed. If an electrical short circuit occurs, earthing reduces the risk of electric shock by providing an escape wire for the electric current. The cord for this appliance has a earthing wire with a earthing plug. Place the plug into an outlet that is properly installed and earthed. Do not use a two–prong adapter.

WARNING

To avoid risk of electric shock, personal injury or death, do not alter the plug and use earthing plug properly.

A–The sides of the oven should have at least enough

clearance to allow air flow for ventilation.

B–Allow at least 30 cm (11-13/16") of clearance around top

unit.

C–Allow at least 10 cm (4") of clearance and sides of

unit.

D–Allow at least 8 cm (3") inches from door front to edge

of countertop, to avoid accidental tipping of the unit.

E–Place oven on a level surface a minimum of

85 cm (33-1/2") above the floor.

Consult a qualified electrician if you do not understand the earthing instructions or if you wonder whether the appliance is properly earthed.

Keep the electrical power cord dry and do not pinch or crush it in anyway.

The wires in the power cord are colored in accordance with the following code:

• Green/Yellow: Earth

• Blue: Neutral

• Brown: Live

General Information

Receptacle

230 V / 13 AMP

Equipment requires a

230 VAC, 50 Hz, 13 amp power supply

Do not use a extension cord. If the product power cord is too short, have a qualified electrician install a three-prong receptacle. This unit should be plug into a separate 230 VAC / 50 Hz power supply. If other equipment is on the same circuit, an increase in cooking times may be required and fuse can be blown.

Plug

Receptacle

230 V / 16 AMP

Equipment requires a

230 VAC, 50 Hz, 16 amp power supply

Plug

Microwave Oven Description

A—Window door screen

B—Spatter shields C—Control panel (Electronic or Dial) D—Door open button E—Safety door lock system

Troubleshooting Procedures

When you get a complaint from customers, evaluate the complaint carefully. If the following symptoms apply, instruct the customer in the proper use of the microwave oven. This can eliminate an unnecessary service call.

CAUTION!

• Verify proper earthing before checking for trouble.

• Be careful of the high voltage circuit.

• Discharge the high voltage capacitor.

• When checking the continuity of the switches or of the high voltage transformer, disconnect one lead wire from these parts and then check continuity with the AC plug removed. To do otherwise may result in a false reading or damage to your meter.

• Do not touch any part of the circuit on the controller, since static electric discharge may damage the control panel. Always touch yourself to earth while working on this panel to discharge any static charge built up in your body.

Condition Cause Remedy

Microwave oven does not work.

Output power is too low.

Sparks occur.

Uneven cooking. Inconsistent food thickness,

•

Inserting multiple plugs into

one outlet and using them at the same time (blown fuse or breaker).

•

Microwave oven plug is not

inserted tightly.

•

Low AC input voltage.

•

Food temperature is too low.

•

Using metallic ware and

allowing it to touch the oven wall.

•

Ceramic ware trimmed in gold

or silver is used.

inconsistent fat or moisture distribution within the food products.

•

Avoid using other electrical

appliances when you use the microwave oven.

•

Insert microwave oven plug

securely.

•

Use the microwave oven at

adequate line voltage.

•

This may not be a defect. It is

possible that the food should be cooked for a longer time period.

•

Do not use metallic ware for

cooking.

•

Do not use any type of

cookware with metallic trimming.

•

Use plastic wrap or lid.

•

Stir once or twice while

cooking soup, cocoa, milk, etc.

Troubleshooting Procedures

Trouble 1: The following visual conditions indicate a probable failed control circuit.

1. Incomplete segments.

• Segment missing.

• Partial segment missing.

• Digit flickering (Note: Slight flickering is normal.)

2. Colon does not turn on or blink.

3. A distinct change in the brightness of one or more numbers in display.

4. One or more digits in the display are not lighting.

5. Display indicates a number different from one touched, for example, key in 5 and 3 appears in the display.

6. Specific numbers (for example 7 or 9) will not display when key pad is touched.

7. Display does not count down with time blinking or up with clock operation.

8. Display obviously jumps in time while counting down.

9. Display counts down too fast while cooking.

10. Each indicator light does not turn on after setting cooking cycle.

11. Display time of day does not reappear when cooking is finished.

Condition Check Result Cause Remedy

No input can be programmed.

1. Some inputs cannot be programmed.

Check the connection between keypad and controller.

Replace keypad and check operation.

•

Continuity

•

No continuity• Loose

•

Everything

works as specified.

•

Failed

controller.

connection.

•

Failed

keypad.

•

Replace

controller.

•

Repair

connection.

•

Replace

keypad.

2. Display shows a number or figure different from one touched.

3. Random programming when touching other pads.

4. Display is fixed at some figure and can not accept any input.

•

Still have

trouble.

•

Failed

controller.

•

Replace

controller.

Troubleshooting Procedures (Electronic Models)

Trouble 2: Oven does not operate at all, display window does not display any digits, and

no input is accepted.

Fuse blows.

Check continuity

of monitor switch

with door closed.

Replace fuse

Check continuity

of primary switch

with door opened.

Check continuity

of secondary

switch with door

opened.

Continuity

Malfunction

of the

monitor

switch.

Malfunction of

primary switch.

Malfunction of

secondary

switch.

Replace the fuse,

primary,

secondary, monitor

switches and

controller.

Replace the fuse,

primary,

secondary, monitor

switches and

controller.

Replace the fuse,

primary,

secondary, monitor

switches and

controller.

Disconnect one side of

the wire lead connecting

Normal

Fuse does not

blow.

Continuity

transformer to high

voltage capacitor and

operate the unit.

Measure

resistance of high

voltage capacitor.

Check continuity

of thermostat

(cavity and

magnetron).

Check continuity

of power cord.

Fuse blows

again.

Abnormal

Continuity

Normal

Failed high

voltage

transformer.

Failed high

voltage

capacitor.

Failed

thermostat.

Failed power

cord.

Replace high

voltage

transformer.

Replace high

voltage

capacitor.

Capacitor is good,

(replace fuse only).

Replace

thermostat.

Replace

power cord.

Troubleshooting Procedures (Electronic Models)

Trouble 3: Display shows all digits programmed, but does not start cooking when the

START pad is pressed.

Time does not

count down

after START

pad is pressed.

Check continuity

of secondary

switch with door

closed.

Check connection

between CN1

connector and

controller.

Normal

Continuity

Malfunction

of secondary

switch.

Failed

controller.

Loose

connection.

Replace the

secondary

switch.

Replace

controller.

Repair

connection.

Fan motor or

oven light does

not operate.

Check fan

motor.

Check oven

light.

Normal

Abnormal

Failed fan

motor.

Failed oven

light.

Replace fan

motor.

Replace oven

light.

Troubleshooting Procedures (Electronic Models)

Trouble 4: Oven operates with little or no heat.

Output

performance

is low.

Check the power

supply voltage.

Disconnect wire leads

from relay RY2 and

verify on and off times.

Measure the

output power.

Lower than

90% of rated

voltage.

Normal

Abnormal

Normal

Abnormal

Decrease in

supply voltage

under load.

Failed

controller.

Failed

magnetron

Customer must

contact local

power

company or

qualified

electrician.

Replace

controller.

Replace

magnetron.

NOTE: Simple test of power output can be conducted by heating one liter of water for one minute. Refer to Amana

Power Test on page 14 of this manual.

Troubleshooting Procedures (Electronic Models)

Trouble 5: No microwave oscillation even when oven light and fan motor operate.

No microwave

oscillation.

Disconnect wire

leads from relay

RY2 and verify

continuity of the

relay.

Check high

voltage

transformer.

Check high

voltage capacitor.

Continuity

Abnormal

Normal

Abnormal

Failed

controller.

Failed high

voltage

transformer.

Failed high

voltage

capacitor.

Replace

controller.

Replace high

voltage

transformer.

Replace high

voltage capacitor.

Operates at

full power

when

programmed

for lower

power.

Check high voltage

diode.

Check magnetron.

Disconnect wire leads from relay

RY2 and verify

continuity of the

relay.

Normal

Abnormal

Normal

Abnormal Failed

Abnormal

Failed high

voltage

diode.

magnetron.

Failed

controller.

Replace high

voltage diode.

Replace

magnetron.

Replace

controller.

Component Testing Procedures

WARNING

To avoid risk of electrical shock, personal injury, or death, disconnect power to oven and discharge capacitor before servicing, unless testing requires it.

Illustration Component Test Results

Thermal cutout Disconnect all wires from TCO.

Capacitor

Diode assembly

Magnetron

Measure resistance across terminals.

Magnetron TCO..........................................

Cavity TCO.................................................

Discharge Capacitors

Remove wires from capacitor terminals and connect ohmmeter, set on highest resistance scale to terminals.

Also check between each terminal and capacitor case.

Discharge Capacitors

Remove diode lead from capacitor and connect ohmmeter.

Reverse leads for second test.

Discharge Capacitors

Open at (145°C) 293°F and

closed at (85°C) 185°F

Opens at (110°C) 230°F

Between Terminals: Meter should momentarily deflect towards zero then return to over 5 MΩ.Ifnodeflection occurs, or if continuous deflection occurs, replace capacitor.

Terminal to Case: Infinite resistance Infinite resistance should be measured in one direction and 50KΩ or more in the opposite direction.

NOTE: Analog meter must contain a battery of 6 volts minimum.

Between Terminals: Less than 1 Ω

Primary

Primary switch

Filament

COM

Secondary

Remove wires from magnetron and connect ohmmeter to terminals. Also check between each terminal and ground.

Turntable motor Remove all wires from terminals.

Measure resistance from: Terminal to terminal

Fan motor Remove all wires from motor.

Measure resistance across coil.

Transformer

Discharge Capacitors

Remove all wires from terminals. Measure resistance from:

Primary....................................................

Secondary to transformer base plate......

Filament..................................................

Interlock switches Disconnect wires to switch

With door open measure resistance from:

COM to N.O.Primary.............................

COM to N.C.Monitor..............................

COM to N.O.Secondary ........................

Each terminal to ground measures infinite resistance. Note: This test is not conclusive. If oven does not heat and all other components test good replace the magnetron and re-test.

Approximately 12−14 KΩ

Approximately 350−450 Ω

Approximately 1.4 – 2.2 Ω Approximately 90 - 110 Ω <1 Ω

Infinite Ω 0 Ω Infinite Ω

Monitor switch

Secondary

switch

COM

With door closed measure resistance from:

COM to N.O.Primary.............................

COM to N.C.Monitor..............................

COM to N.O.Secondary ........................

0 Ω Infinite Ω 0 Ω

Component Testing Procedures

WARNING

To avoid risk of electrical shock, personal injury, or death, disconnect power to oven and discharge capacitor before servicing, unless testing requires it.

Illustration Component Test Results

Timer 7 minute Disconnect wire from terminals.

Control

CN3

RY3

CN1

RY2

Measure resistance of the following terminals:

Terminal 3 to terminal 4 (timer motor)......

Terminal 1 to terminal 2(timer switch)......

CN1

Pin 1 (black) to Pin 3 (white) .......................

(Cook Relay)

RY2

Unplug oven and remove wire leads from RY2 terminals. Connect ohm-meter leads to terminals.

Plug oven into power supply ......................

Initiate cook cycle ......................................

NOTE: RY2 should cycle when using

reduced power levels.

RY3

(Fan Relay)

Unplug oven and remove wire leads from RY3 terminals. Connect ohm-meter leads to terminals.

Plug oven into power supply ......................

Initiate cook cycle ......................................

NOTE: Fan relay remains energized for 60

seconds following cook cycle.

Approximately 22 KΩ Timer OFF infinite Ω

Timer ON <1Ω

Line voltage input to control transformer.

Infinite Ω <1Ω

Power levels for Relay 2 Power Cycles Cycles Level On for: Off for:

20% 6 sec 16sec 40% 10 sec 12 sec 60% 14 sec 8 sec 80% 18 sec 4 sec 100% 22 sec 0 sec

Infinite Ω <1Ω

Fuse

LD510P

1000WATT

10 PROGRAMPADS

3 COOKINGSTAGES

Fuse block / Filter board

Disconnect wire from terminals. Measure resistance of the following terminals:

Verify fuse is good.....................................

Touch panel

DEL10E

1000 WATT

Terminal L to L...........................................

Terminal N to N .........................................

Continuity is indicated as 100 Ω and below. Each pad must be pressed to perform the

following test.

10 PROGRAM PADS

20%

50%

70% QTY

3 COOKING STAGES

1 2 3 4 5 6 7 8 9

10 11

16022150 Rev. 0

<1Ω <1Ω <1Ω

Pad

1 2 3 4 5 6 7 8 9 0 Hold Defrost Medium MED-HI Time Entry Stop/Reset Start X2

Trace

2&8 3&8 4&8 5&8 6&8 7&8 1&9 2&9 3&9 1&8 1&10 2&10 3&10 4&10 5&10 6&10 7&10 7&9

Measurement

Continuity Continuity Continuity Continuity Continuity Continuity Continuity Continuity Continuity Continuity Continuity Continuity Continuity Continuity Continuity Continuity Continuity Continuity

Microwave Power Test Procedures

To avoid risk of electrical shock, personal injury, or death, disconnect power to oven and discharge capacitor before servicing, unless testing requires it.

WARNING

Power Test (Traditional Test Method)

Test equipment required is Amana power test kit R0157397 (Fahrenheit), or Menumaster power test kit M95D5 (Celsius).

1. Fill the plastic container to the 1000 ml. line with cool tap water.

2. Using the thermometer; stir the water, measure, and record the water temperature.

Initial water temperature should be approximately 60°F(16°C).

3. Place container on the center of the oven shelf and heat the water for

33 seconds for ovens with more than 1550 watts or 63 seconds for ovens with less than 1550 watts.

NOTE: Use a watch second hand, not the oven timer.

4. Stir the water, measure and record the temperature of the water after heating time is complete.

5. Subtract the starting water temperature (Step 2), from the ending water temperature (Step 4) to obtain the temperature rise (∆T).

6. See the Traditional Power Test Temperature Chart below.

NOTES: •The IEC-705 test method requires precision measurements and equipment. It is not practical to perform

the IEC test in the field. To convert the traditional power test results to the approximate IEC-705 rating, take the traditional power test results and add 100 watts per magnetron for the unit being tested.

Example: 840  watts output using the traditional power test for model LD510P

 watts (1 magnetrons X 100 watts)

+ 100

940  Approximate IEC-705 results

•Always perform power test three times for accuracy, changing the water after each test is performed.

•Variation or errors in the test procedure will cause a variance in the temperature rise. Additional power

tests should be made if temperature rise appears marginal.

•Low line voltage will cause lower temperature rise.

Temperature Chart

SIXTY−THREE SECONDS run time chart for units less than 1550 Watts cooking power

∆T Cooking ∆T Cooking ∆T Cooking ∆T Cooking

(°F) Power Output (°F) Power Output (°C) Power Output (°C) Power Output

12 464 27 1046 7 490 15 1050 13 504 28 1085 8 560 16 1120 14 542 29 1124 9 630 17 1190 15 581 30 1162 10 700 18 1260 16 620 31 1201 11 770 19 1330 17 659 32 1240 12 840 20 1400 18 697 33 1279 13 910 21 1470 19 736 34 1317 14 980 20 775 35 1359 21 814 36 1395 22 852 37 1434 23 891 38 1472 24 930 39 1511 25 969 40 1550 26 1007

Microwave Leakage Testing

To avoid risk of electrical shock, personal injury, or death, disconnect power to oven and discharge capacitor before servicing, unless testing requires it.

WARNING

Check for radiation leakage after servicing. Should the leakage be more than 4mW/cm immediately. After repairing or replacing any radiation safety device, keep a written record for future reference, as required by D.H.H.S. and HEW regulations. This requirement must be strictly observed. In addition, the leakage reading must be recorded on the service repair ticket while in the customer’s home.

Equipment

• Electromagnetic radiation monitor

• 600 cc glass beaker

Procedure For Measuring Radiation Leakage

Note before measuring -

• Do not exceed meter full scale deflection. Leak monitor should initially be set to the highest scale.

• To prevent false readings the test probe should be held by the grip portion of the handle only.

• The scan speed is equal to one inch per antenna revolution or one inch per second if antenna speed is unknown.

• Areas to be checked are all door seal areas and any venting parts.

• Leakage with the outer panel removed ...4mW/cm

• Leakage for fully assembled oven with door normally closed ...4mW/cm

• Leakage for a fully assembly oven (before the latch switch (primary) is interrupted) while pulling the door ... 4mW/cm

or less.

inform Maytag

WARNING

Measurement With the Outer Panel Removed

DANGER!

Avoid contacting any high voltage components.

Whenever you replace the magnetron, measure for radiation leakage before the outer panel is installed and after all necessary components are replaced or adjusted. Special care should be taken in measuring around the magnetron.

Measurement With a Fully Assembled Oven

After all components including the outer panel are fully assembled, measure for radiation leakage around the door periphery, the door viewing window, the exhaust opening, and air inlet openings.

Record Keeping and Notification After Measurement

1. After any adjustment or repair to a microwave oven, a leakage reading must be taken. Record this leakage reading on the repair ticket even if it is zero.

2. A copy of the repair ticket and the microwave leakage reading should be kept by the repair facility.

1. Pour 275 cc ±15 cc (9 oz ±1/2 oz) of 20°C ± 5°C (68°F ± 9°F) water in a beaker which is graduated to 600 cc and place the beaker in the center of oven.

2. Set the radiation monitor to 2450 MHz and use it following the manufacturer’s recommended test procedure to assure correct results.

3. While measuring the leakage, always use the two inch (5 cm) spacer supplied with the probe.

4. Press the start pad or turn on the timer and with the magnetron oscillating, measure the leakage by holding the probe perpendicular to the surface being measured.

16022150 Rev. 0

Disassembly Procedures

WARNING

To avoid the risk of electrical shock, personal injury, or death, disconnect power to oven and discharge capacitors before following any disassembly procedure.

High voltage is present at the high voltage terminal of the high voltage transformer during any cooking cycle.

It is neither necessary or advisable to attempt measurement of the high voltage circuitry.

Before touching any oven components or wiring, always unplug the oven from its power source and discharge the capacitor.

Disconnecting Wire Terminals

All wire terminals are locking-type terminals. Proceed as follows to disconnect wire terminals:

Insulated terminals:

Grasp insulator pod and pull back.

DO NOT PULL ON WIRE.

1 Grasp

Wire

Door Assembly

CAUTION

A microwave leakage test must be performed anytime a door assembly is removed, replaced, disassembled, or adjusted for any reason.

Door Removal

1. Disconnect power to oven.

2. Open oven door, remove top hinge cap, and slowly lift door to disengage the hinge pins at top and bottom.

Top hinge cap

Insulator Pod

Non-insulated terminals:

Use a small blade screwdriver to depress locking-tab and pull on terminal.

DO NOT PULL ON WIRE.

Release

2 Pull

Wire

locking-tab

2 Pull

3. To re-install door, place bottom pin into slot first, then align top pin.

4. Replace top hinge cap.

Disassembly Procedures

choke assembly

WARNING

To avoid the risk of electrical shock, personal injury, or death, disconnect power to oven and discharge capacitors before following any disassembly procedure.

Door Disassembly

1. Disconnect power to oven.

2. Remove oven door, (see "Door Removal").

3. Begin at the bottom of the door near hinge, insert flat blade screwdriver between choke cover and outer door panel. Gently pry upward on choke cover to release tabs. Work in clockwise direction to remove choke cover.

CAUTION

To avoid property damage, care must be taken when prying choke cover from oven door.

4. Slide latch assembly upward and pull away from door frame to release tabs from frame.

5. Disconnect latch spring from door frame.

6. Begin at hinge side of door near bottom, insert flat blade screwdriver between door frame/choke assembly and outer door panel. Gently pry outer door panel away from door frame to release tabs. Work in clockwise direction to remove door frame.

7. Reassemble in reverse order.

Choke cover

Slats

Outer door panel

Top hinge cap

Outer Case

1. Disconnect power to oven.

2. Remove screws securing outer case to unit.

3. Slide outer case towards rear of unit.

4. Reassemble in reverse order.

Control Panel Removal

1. Disconnect power to oven and remove outer case, (see "Outer Case" procedure).

2. Disconnect and label wires from controller/timer.

3. Open oven door.

4. Remove screw securing top of control panel to cavity. Lift control panel up and out to release bottom tabs.

A microwave leakage test must be performed anytime a door assembly is removed, replaced, disassembly, or adjusted for any reason.

NOTE: When disassembling door, use caution to

Latch

Spring

Door frame/

CAUTION

prevent deformation of slats on door frame/ choke assembly.

assembly

Securing screw

Earth screw

5. Reassemble in reverse order.

NOTE: Be sure to re-install earth wire when securing

control panel to cavity.

Disassembly Procedures

WARNING

To avoid the risk of electrical shock, personal injury, or death, disconnect power to oven and discharge capacitors before following any disassembly procedure.

Controller Removal (Electronic Models)

1. Disconnect power to oven and remove outer case, (see "Outer Case" procedure).

2. Remove control panel, (see "Control Panel" section).

3. Disconnect keypad ribbon connector .

NOTE: Caution should be used when removing ribbon

from connector. Ribbon cable has two holes to align and lock ribbon to connector.

4. Remove screws securing controller to control panel assembly.

Control panel

Controller

Key pad

Timer Removal (Dial Models)

1. Disconnect power to oven and remove outer case (see "Outer Case" procedure).

2. Remove control panel, (see "Control Panel" section).

3. Remove screws securing timer to control panel.

4. Remove knob from timer.

5. Reassemble in reverse order.

Control panel

Knob

Timer motor

Release lever

Button spring

Release lever

Door release button

5. Reassemble in reverse order.

NOTE: Do not flex controller.

Key Pad Removal

1. Disconnect power to oven and remove outer case, (see "Outer Case" procedure).

2. Remove control panel, (see "Control Panel" section).

3. Disconnect ribbon connector.

4. Peel off failed key pad from control panel.

6. Reassemble in reverse order.

Tabs

Button spring

Door release button

All Models

Door Release Lever / Release Button / Spring

1. Disconnect power to oven and remove outer case (see "Outer Case" procedure).

2. Carefully pry tab on control panel to disengage release lever from control panel.

3. Push (4) tabs on door release button and remove button from control panel.

4. Remove spring from door release button.

5. Reassemble in reverse order.

Disassembly Procedures

WARNING

To avoid the risk of electrical shock, personal injury, or death, disconnect power to oven and discharge capacitors before following any disassembly procedure.

Interlock Switches

Primary switch is operated by top latch arm.

Interlock Switch Removal

1. Disconnect power to oven and remove outer case, (see "Outer Case" procedure).

2. Remove control panel, (see "Control Panel" section).

3. Test interlock switches before removing, (see testing procedures).

4. Disconnect and label wire connections.

5. Remove switches by carefully releasing locking tabs on switch bracket and tilting switches to remove from switch bracket.

Push upward

Secondary switch

Monitor switch

Primary switch

NOTE: After repairing the door or the interlock system,

it is necessary to check the switch continuity before operating the oven.

Before replacing a blown monitor fuse, test the primary interlock switch, secondary interlock switch, monitor switch, and power relay contacts for proper operation. If the monitor fuse is blown by a failed switch operation, all switches and controller must be replaced.

Locking Tab

Push downward slide switch

Locking Tab

Push downward slide switch

CAUTION

Adjusting Interlocks

The interlock monitor, primary, and secondary switches act as a final safety switch, protecting the operator from microwave energy. After adjusting the interlock switch assembly, verify wires are correctly connected.

For door fit and switch operation, switch bracket is adjustable.

1. Disconnect power to oven and remove outer case, (see "Outer Case" procedure).

2. Loosen switch bracket mounting screws.

3. Close oven door, move switch bracket toward rear of oven until door gap is less than 1/64–inch (0.5 mm).

4. Hold switch bracket securely for proper switch operation and door fit, retighten screws.

5. Open oven door slowly, watching the switches. Verify switches release in the following order.

• Primary interlock switch

• Secondary interlock switch

• Interlock monitor switch

NOTE: Adjust the switch bracket until all switches

operate in proper sequence.

6. Close the oven door slowly, watching the switches. Verify switches activate in the following order.

• Interlock monitor switch

• Secondary interlock switch

• Primary interlock switch

7. When proper switch sequence has been achieved, tighten the switch bracket securely.

CAUTION

A microwave leakage test must be preformed anytime a door assembly is removed, replaced, disassembled, or adjustment of switch bracket is made.

High Voltage Capacitor

High voltage capacitor should always be discharged by shorting a terminal to a chassis earth. The capacitor has a internal "shunt" resistor, but the mechanical discharge should always be performed to avoid personal injury.

High Voltage Capacitor Removal

1. Disconnect power to oven and remove outer case, (see "Outer Case" procedure).

2. Discharge high voltage capacitor.

3. Remove and label wire leads from capacitor terminals.

4. Push the end of capacitor straps towards rear of oven to release strap from fan shroud.

5. Slide capacitor out of slots and remove capacitor.

6. Reassemble in reverse order.

Disassembly Procedures

WARNING

To avoid the risk of electrical shock, personal injury, or death, disconnect power to oven and discharge capacitors before following any disassembly procedure.

Diode

1. Disconnect power to oven and remove outer case, (see "Outer Case" procedure).

2. Discharge high voltage capacitor, (see "High Voltage Capacitor" section).

3. Disconnect diode from high voltage capacitor and remove screw securing diode to earth.

4. Reassemble in reverse order.

Transformer

1. Disconnect power to oven and remove outer case, (see "Outer Case" procedure).

2. Discharge high voltage capacitor, (see "High Voltage Capacitor" section).

3. Disconnect and label wire leads from transformer.

4. Remove screws securing transformer and remove.

5. Reassemble in reverse order.

Fuse Block / Filter Assembly

1. Disconnect power to oven and remove outer case, (see "Outer Case" section).

2. Disconnect and label wires.

3. Carefully lift rear of fuse block assembly to release assembly from locating pin.

4. Slide fuse block assembly towards front of oven to remove.

5. Reassemble in reverse order.

Magnetron

Magnetron is mounted on the side of the cavity.

1. Disconnect power to oven and remove outer case, (see "Outer Case" section).

2. Discharge high voltage capacitor, (see "High Voltage Capacitor" section).

3. Remove filter assembly from magnetron terminals.

4. Remove air duct.

5. Remove screws securing magnetron to the wave guide.

Waveguide

Magnetron hanger

Dome

R.F. Gasket

Screws Magnetron

6. Reassemble in reverse order.

NOTE: When replacing magnetron, make sure gasket

is in correct position and in good condition.

Fuse

Fuse Removal

Fuse is located on the noise filter board.

1. Disconnect power to oven and remove outer case, (see "Outer Case" section).

2. Remove and replace fuse, reassemble in reverse order.

CAUTION

During replacement of magnetron, be certain the R.F. anode gasket is in place around the anode stud.

WARNING

A microwave leakage test must be performed anytime a magnetron assembly is removed, replaced, disassembled, or adjusted for any reason.

Disassembly Procedures

WARNING

To avoid the risk of electrical shock, personal injury, or death, disconnect power to oven and discharge capacitors before following any disassembly procedure.

Fan Motor

1. Disconnect power to oven and remove outer case (see "Outer Case" section).

2. Discharge high voltage capacitor, (see "High Voltage Capacitor" section).

3. Remove rear air guide.

4. Remove screws securing diode to back panel.

5. Disconnect and label wires to high voltage capacitor.

6. Remove screws securing fan shroud to back panel and remove fan shroud from cavity.

7. Disconnect wires from fan motor terminals.

8. Carefully note fan blade direction and placement on motor shaft.

9. Pull fan blade from motor shaft.

10. Remove screws securing motor to shroud and remove motor.

11. Reassemble in reverse order.

Rear air guide

Light Socket / Bulb Assembly

1. Disconnect power to oven and remove outer case, (see "Outer Case" section).

2. Disconnect wire terminal plug.

3. Carefully bend one tab to release socket.

4. Remove light socket / bulb assembly.

5. Replace and reassemble in reverse order.

Stirrer Motor

1. Disconnect power to oven.

2. Place oven on it's back.

Fan shroud

Blade

Motor

Cavity Thermostat

The cavity thermostat is located on top left side of cavity. Thermostat is a non–resettable thermostat.

1. Disconnect power to oven and remove outer case, (see "Outer Case" section).

2. Discharge high voltage capacitor, (see "High Voltage Capacitor" section).

3. Carefully bend one tab to release thermostat.

4. Disconnect wires from oven thermostat and replace thermostat.

5. Reassemble in reverse order.

3. Remove bottom plate cover, by cutting metal tabs NOTE: When reinstalling plate cover use screw

provided.

4. Disconnect wires from motor terminals.

5. Remove screws securing motor to oven cavity.

Wire leads

Stirrer motor

6. Replace and reassemble in reverse order.

Amana Menumaster DEL10D Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual