Maytag RCS, RFS, RCS10DA User 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.
2004 - RCS/RFS Commercial Microwave Ovens
This Base Manual covers general information
Refer to individual Technical Sheet
for information on specific models
This manual includes, but is
RCS10DA P1330201M RCS10MPA P1330202M RCS10A P1330203M RCS10PBDA P1330204M RCS10MPSA P1330205M RFS12MPSA P1330206M RFS12SW2A P1330208M RFS10SW2A P1330232M
16023293
November 2004
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 RESPONSIBILITY 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
Service Support Center
Contact us at: Phone: 1-800-426-2621 / 1-319-622-2808 Fax: 1-319-622-2846 Web site: www.commercialserviceamana.com
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.
2 16023293 Rev. 0 ©2004 Maytag Services
Table of Contents
Important Information .................................................... 2
Important Safety Information ......................................... 4
Grounding Instructions ............................................... 7
Servicing of Grounded Products ................................. 8
Wiring ........................................................................ 8
Proper Grounding and Polarization of
120 Volts Wall Outlets ............................................ 8
Explanation ............................................................... 8
Test Procedures (2 Methods) ..................................... 8
General Test Information ............................................ 8
General Information
Unpacking Equipment ................................................ 9
Equipment Placement ............................................... 9
Radio Interference ...................................................... 9
Oven Features ........................................................... 9
Model Identification ................................................... 10
Service ......................................................................10
Parts and Accessories.............................................. 10
Troubleshooting Procedures ................................... 11-16
Service Information
Proper Handling of Magnetron Tubes ........................ 17
Magnetron Failure Mode ........................................... 17
Microwave Leakage Test
Equipment ................................................................18
Procedure For Measuring Radiation Leakage ........... 18
Measurement With the Outer Panel Removed .......... 18
Measurement With a Fully Assembled Oven ............ 18
Record Keeping and Notification
After Measurement ................................................ 18
Troubleshooting
Operating Instructions for Holaday
HI1501, HI1510, and HI1710 ..................................19
Testing Procedures ................................................. 20-23
Power Test................................................................ 24
Disassembly Procedures
Disconnecting Wire Terminals .................................. 25
Outer Case ............................................................... 25
Door Assembly ......................................................... 26
Door Disassembly .................................................... 26
Control Removal ....................................................... 27
Interlock Switches .................................................... 27
H.V. Capacitor .......................................................... 28
Diode ........................................................................ 28
Transformer .............................................................. 29
Fuse / Fuse Block / Filter Assembly ........................ 29
Magnetron ................................................................ 29
Blower Motor or Wheel ............................................. 30
Splatter Shield .......................................................... 30
Antenna .................................................................... 30
Stirrer Motor.............................................................. 30
Magnetron Thermal Cut-Out (TCO) ........................... 31
Cavity Thermal Fuse .................................................31
Tray Replacement ..................................................... 31
Oven Light Removal .................................................. 31
Appendix A
Quick Reference Guide Dial Model ......................... A-2
Quick Reference Guide Electronic Model ............... A-4
©2004 Maytag Services 16023293 Rev. 0 3
Important Safety Information
WARNING
!
Read the following information to avoid possible exposure to microwave radiation:
The basic design of the Amana Microwave Oven makes it an inherently safe device to both use and service. 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 grounded 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 ground the capacitors on the magnetron filter box 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. Always remember that in the area of the transformer there is HIGH VOLTAGE. When the unit is operating keep this area clear and free of anything which could possibly cause an arc or ground, etc.
8. Do not for any reason defeat the interlock switches there is not a valid reason for this action at anytime; nor will it be condoned by Maytag.
9. IMPORTANT: Before returning a unit to a customer, be sure to check for proper switch interlock action.
10. Before returning a unit to a customer, verify that the door spacing is reasonably uniform along the top, bottom, and sides, and that it measure 1/64"/0.5mm or less.
11. Microwave ovens should never be operated with any components removed and/or bypassed or when any of the safety interlocks are found to be failing or when any of the seal surfaces are failing, missing or damaged.
12. All microwave ovens meet all requirements of the radiation control for Health and Safety Act of 1968. Due to measurement uncertainties, the maximum leakage for the field will be 4mw/cm
13. To ensure that the unit does not emit excessive microwave leakage and to meet the Department of Health and Human Services guidelines, check the oven for microwave leakage using a leakage monitor. The maximum leakage level allowed when following those instructions is 4mw/cm2.
14. If servicer encounters an emission reading over 4mw/cm2, the servicer is to cease repair and contact the Commercial Support Center immediately for further direction. Maytag will contact the proper Government Agency upon verification of the test results.
2.
4 16023293 Rev. 0 ©2004 Maytag Services
Important Safety Information
Recognize this symbol as a SAFETY message
WARNING
!
When using electrical equipment, basic safety precautions should be followed to reduce the risk of burns, electrical shock, fire, or injury to persons.
1. READ all instructions before using equipment.
2. READ AND FOLLOW the specific
“PRECAUTIONS TO AVOID POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGY”.
3. This equipment MUST BE GROUNDED. Connect only to properly GROUNDED outlet. See “GROUNDING INSTRUCTIONS”.
4. Install or locate this equipment ONLY in accordance with the installation instructions in this manual.
5. Some products such as whole eggs and sealed containers, for example, closed glass jars may explode and SHOULD NOT be HEATED in this oven.
6. Use this equipment ONLY for its intended use as described in this manual. Do not use corrosive chemicals or vapors in this equipment. This type of oven is specifically designed to heat or cook. It is not designed for industrial or laboratory use.
7. As with any equipment, CLOSE SUPERVISION is necessary when used by CHILDREN.
8. DO NOT operate this equipment if it has a damaged cord or plug, if it is not working properly, or if it has been damaged or dropped.
9. This equipment, including power cord, must be serviced ONLY by qualified service personnel. Special tools are required to service equipment. Contact nearest authorized service facility for examination, repair, or adjustment.
10. DO NOT cover or block filter or other openings on equipment.
11. DO NOT store this equipment outdoors. DO NOT use this product near water, for example, near a kitchen sink, in a wet basement, or near a swimming pool, and the like.
12. DO NOT immerse cord or plug in water.
13. Keep cord AWAY from HEATED surfaces.
14. DO NOT let cord hang over edge of table or counter.
15. See door cleaning instructions in “Care and Cleaning” section.
16. For commercial use only.
CAUTION
!
To reduce risk of fire in the oven cavity:
a. DO NOT overcook food. Carefully attend
equipment if paper, plastic, or other combustible materials are placed inside the oven to facilitate cooking.
b. Remove wire twist-ties from paper or plastic
bags before placing bag in oven.
c. KEEP oven DOOR CLOSED, turn oven off, and
disconnect the power cord, or shut off power at the fuse or circuit breaker panel, if materials inside the oven should ignite. Fire may spread if door is opened.
d. DO NOT use the cavity for storage. DO NOT
leave paper products, cooking utensils, or food in oven.
SAVE THESE INSTRUCTIONS
©2004 Maytag Services 16023293 Rev. 0 5
Important Safety Information
CAUTION
!
To avoid risk of personal injury or property damage, observe the following:
1. Briskly stir or pour liquids before heating with microwave energy to prevent spontaneous boiling or eruption. Do not overheat. If air is not mixed into a liquid, liquid can erupt in oven or after removal from oven.
2. Do not deep fat fry in oven. Fat could overheat and be hazardous to handle.
3. Do not cook or reheat eggs in shell or with an unbroken yolk using microwave energy. Pressure may build up and erupt. Pierce yolk with fork or knife before cooking.
4. Pierce skin of potatoes, tomatoes, and similar foods before cooking with microwave energy. When skin is pierced, steam escapes evenly.
5. Do not operate equipment without load or food in oven cavity.
6. Use only popcorn in packages designed and labeled for microwave use. Popping time varies depending on oven wattage. Do not continue to heat after popping has stopped. Popcorn will scorch or burn. Do not leave oven unattended.
7. Do not use regular cooking thermometers in oven. Most cooking thermometers contain mercury and may cause an electrical arc, malfunction, or damage to oven.
8. Do not heat baby bottles in oven.
9. Do not use metal utensils in oven.
10. Never use paper, plastic, or other combustible materials that are not intended for cooking.
11. When cooking with paper, plastic, or other combustible materials, follow manufacturer's recommendations on product use.
12. Do not use paper towels which contain nylon or other synthetic fibers. Heated synthetics could melt and cause paper to ignite.
13. Do not heat sealed containers or plastic bags in oven. Food or liquid could expand quickly and cause container or bag to break. Pierce or open container or bag before heating.
14. To avoid pacemaker malfunction, consult physician or pacemaker manufacturer about effects of microwave energy on pacemaker.
PRECAUTIONS TO AVOID POSSIBLE EXPOSURE
TO EXCESSIVE MICROWAVE ENERGY
a. DO NOT attempt to operate this oven with the
door open since open-door operation can result in harmful exposure to microwave energy. It is important not to defeat or tamper with the safety interlocks.
b. DO NOT place any object between the oven front
face and the door or allow soil or cleaner residue to accumulate on sealing surfaces.
c. DO NOT operate the oven if it is damaged. It
is particularly important that the oven door close properly and that there is no damage to the: (1) door (bent), (2) hinges and latches (broken or loosened), (3) door seals and sealing surfaces.
d. The oven should NOT be adjusted or repaired
by anyone except properly qualified service personnel.
SAVE THESE INSTRUCTIONS
6 16023293 Rev. 0 ©2004 Maytag Services
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.
• Do not operate or allow oven to be operated with door open.
• 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
• 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.
• Any failed 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.
• Check microwave leakage to verify compliance with the federal performance standard should be performed on each oven prior to release to the consumer.
!
WARNING
To avoid risk of electrical shock, injury or death; make sure these grounding instructions are followed.
Grounding Instructions
!
WARNING
Do not remove grounding prong when installing grounded appliance in a home or business that does not have three wire grounding receptacle, under no condition is grounding prong to be cut off or removed. It is the personal responsibility of the consumer to contact a qualified electrician and have properly grounded three prong wall receptacle installed in accordance with appropriate electrical codes.
WARNING
!
To avoid the risk of electrical shock or death, do not alter the plug.
WARNING
!
To avoid the risk of electrical shock or death, this equipment must be grounded.
This equipment MUST be grounded. In the event of an electrical short circuit, grounding reduces the risk of electric shock by providing an escape wire for the electric current. This oven is equipped with a cord having a grounding wire with a grounding plug. The plug must be plugged into an outlet that is properly installed and grounded.
Consult a qualified electrician or servicer if grounding instructions are not completely understood, or if doubt exists as to whether the equipment is properly grounded.
Do not use an extension cord. If the product power cord is too short, have a qualified electrician install a three­slot receptacle. This oven should be plugged into a separate 60 hertz circuit with the electrical rating as shown in the appropriate drawing. Models operate with a 120 supply voltage. When a microwave oven is on a circuit with other equipment, an increase in cooking times may be required and fuses can be blown.
NEMA 5-20R/5-20P
120V–20AMP
©2004 Maytag Services 16023293 Rev. 0 7
NEMA 5-15R/5-15P
120V–15AMP
Important Safety Information
Servicing of Grounded Products
The standard accepted color coding for grounding wires is GREEN or GREEN WITH YELLOW STRIPE. These ground leads are NOT to be used as current carrying conductors. It is extremely important that the technician replace any and all grounds prior to completion of the service call. Under no condition should ground wire be left off causing a potential hazard to technicians and consumer.
Wiring
A good service practice is never route wiring over terminals and/ or sharp edges. This applies to any wiring without regard to the circuit voltage. Wire installation 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
!
To avoid risk of electrical shock, personal injury or death; verify the oven is properly grounded and polarized.
Explanation
Polarization–This means that the larger slot must be
neutral and the small slot must be hot (live). Mispolarized–The outlet is miswired so that the larger slot is hot (live) and the smaller slot is neutral. Grounded–This means the round hole connection is connected to earth ground through a connection to the main power panel. Ungrounded–The round hole connection is not complete to earth ground and/or the main power panel.
Test Procedures (2 Methods)
Method #1
Use a ground monitor plug available for purchased at local hardware store. The lamps inside the monitor indicate a correctly or incorrectly wired outlet by instructions imprinted on the monitor body.
Proper Grounding and Polarization of 120 Volts Wall Outlets
For the safety of our customers and the service technician ALL appliances have a three–prong power cord and MUST be connected to a properly polarized and grounded wall outlet.
This information was written for those who do not understand grounding and polarization of a wall outlet.
A 120 volt wall outlet must always be wired as shown below.
Neutral (N) - This slot is the larger of the two and should be neutral (dead) with respect to ground.
N
G
Ground (G) - The round hole connectio n is for the groundi ng circuit. Behin d the cover plate a green wire should be conne cted to this terminal.
Hot (H) - This slot is the smaller size and should always be hot (live) with respect to neutral (N) and ground(G).
H
Method #2
Voltmeter - (Use scale over 125 Volts A.C.)
• Test A - "H" to "N" must indicate line voltage.
• Test B - "H" to "G" must indicate line voltage.
• Test C - "N" to "G" must indicate zero (0) volts.
If "N" to "G" indicates line voltage the outlet is improperly polarized.
If "H" to "G" indicates zero (0) volts the outlet is not grounded.
CAUTION
!
To avoid risk of electrical shock, personal injury or property damage; wiring changes or grounding of wall outlet are to be made only by a qualified electrician.
General Test Information
Most testing in the manual is conducted with an ohmmeter using a multiplier scale of X 10k (k–thousand ohms). When using this scale, it is important that your fingers do not touch the metal parts of the test probes. To do so will give a false indication of the ohm reading.
8 16023293 Rev. 0 ©2004 Maytag Services
General Information
Unpacking Equipment
• Inspect equipment for damage such as dents in door or dents inside oven cavity.
• Report any dents or breakage to source of purchase immediately. Do not attempt to use oven if damaged.
• Remove all materials from oven interior.
Equipment Placement
• Do not install equipment next to or above source of heat, such as pizza oven or deep fat fryer. This could cause microwave oven to operate improperly and could shorten life of electrical parts.
• Do not block or obstruct air filter. Allow access for cleaning.
• Install on level countertop surface.
A
A
A
Radio Interference
Microwave operation may cause interference to radio, television, or similar equipment. Reduce or eliminate interference by doing the following:
• Clean door and sealing surfaces of oven according to instructions in “Care and Cleaning” section.
• Place radio, television, etc. as far as possible from oven.
• Use a properly installed antenna on radio, television, etc. to obtain stronger signal reception.
Oven Features
Removable Splatter Shield (Not Shown)
Oven Door Window and Interior Light
Oven Display Oven Control Pads
AAllow at least 1½ inches / 3.81 centimeters of clearance
around top and sides of equipment. Proper air flow around equipment cools electrical components. With restricted air flow, oven may not operate properly and life of electrical parts is reduced.
Filter
©2004 Maytag Services 16023293 Rev. 0 9
General Information
Model Identification
• For Amana product call 1-866-426-2621 or visit the Web Site at www.amanacommercial.com
When contacting for service support, provide product information located on rating plate. Record the following:
Model Number: ___________________ Manufacturing Number: ___________________ Serial or S/N Number: ___________________ Date of purchase: ___________________ Dealer’s name and address: ___________________
Service
Keep a copy of sales receipt for future reference or in case warranty service is required. To locate an authorized servicer:
• For Amana product call 1-866-426-2621 or visit the Web Site at www.amanacommercial.com
Warranty service must be performed by an authorized servicer. We also recommend contacting an authorized servicer, if service is required after warranty expires.
Parts and Accessories
Purchase replacement parts and accessories over the phone. To order accessories for your product contact your local product distributor or vist the Web site at www.amanacommercial.com.
10 16023293 Rev. 0 ©2004 Maytag Services
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. Use the microwave oven at
Food temperature is too low. • This may not be a defect. It is
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.
adequate line voltage.
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.
©2004 Maytag Services 16023293 Rev. 0 11
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.
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.
Check the connection between keypad and controller.
Replace keypad and check operation.
Continuity
No continuity
Everything
works as specified.
Still have trouble.
Failed controller.
Loose connection.
Failed keypad.
Failed controller.
Replace controller.
Repair connection.
Replace keypad.
Replace controller.
12 16023293 Rev. 0 ©2004 Maytag Services
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
No
Continuity
Continuity
No
Continuity
Continuity
No
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
No
Continuity
No
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.
©2004 Maytag Services 16023293 Rev. 0 13
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
No
Continuity
Continuity
Continuity
No
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
Abnormal
Failed fan
motor.
Failed oven
light.
Replace fan
motor.
Replace oven
light.
14 16023293 Rev. 0 ©2004 Maytag Services
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 Power Test on page 24 of this manual.
©2004 Maytag Services 16023293 Rev. 0 15
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.
No
Continuity
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.
16 16023293 Rev. 0 ©2004 Maytag Services
Service Information
To avoid risk of electrical shock, personal injury, or death, disconnect power to oven and discharge capacitor before servicing, unless testing requires power.
!
Proper Handling of Magnetron Tubes
CAUTION
!
A magnetron tube, like a radio or television tube must be handled with a reasonable amount of care. When handling a tube, always handle by the housing only. Use caution not to touch or strike the ceramic portion at the top. The carton used to ship service replacement tubes is reusable.
Magnetron Failure Modes
Magnetron failures that have been identified are generally grouped into categories shown below.
1. Shorted Air - This is a case where the tube has had the vacuum
envelope destroyed and air has entered the tube. This will cause internal arcing and high secondary current if high voltage is applied.
R.F. Capacitors - May short to chassis. This condition
will also cause loss of high voltage.
WARNING
2. Open Heater (Filament) - Can be determined by a ohmmeter when transformer leads are disconnected. Resistance is normally less than one ohm; filament does not short internally. Any tube removed should be checked since usage tends to make the filament more fragile. Later handling and shipping may open the filament and thereby mask the true failure mode when checked at the factory.
3. Low Power - Caused by “wearout” of the emission characteristics of the directly heated cathode. Symptoms are: (1) tube current will take longer to get to operating point then a new tube (normally about 2 - 3 seconds), (2) tube current does not get high enough to cause the tube to oscillate with normal line voltage, (3) oven produces low power into a load, two-thirds or less than normal.
4. Physical Damage - Caused by mishandling of magnetron tube.
Fins
Magnet
Output Antenna
Ceramic
Terminals/R.F. Capacitors
Not Replaceable
Serial Number
Anode Block
©2004 Maytag Services 16023293 Rev. 0 17
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 power.
!
WARNING
Measurement with the Outer Panel
WARNING
!
Check for radiation leakage after servicing. Should the leakage be more than 4 mW/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 or plastic power bowl
2
inform Maytag
Removed
WARNING
!
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
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 less.
• Leakage for fully assembled oven with door normally closed ...4 mW/cm
• Leakage for a fully assembly oven (before the latch switch (primary) is interrupted) while pulling the door ... 4 mW/cm
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.
2
or less.
2
or less.
2
or
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.
16023293 Rev. 0
©2004 Maytag Services 18
Troubleshooting
To avoid risk of electrical shock, personal injury, or death, disconnect power to oven and discharge capacitor before servicing, unless testing requires power.
!
Operating Instructions for the Holaday HI1501, HI1510, HI1710, and HI1801
Purpose of these monitors is to check radiation leakage around microwave oven door or other places where radiation could possibly occur.
Instrument measures radiation leakage in milliwatts per square centimeters (mW/cm
used with the 2" (5 cm) cone spacer. Water load of 275 cc. (approximately 1 the oven and used as a load during leakage tests.
Operate the instrument on its internal 9 Volt battery power supply. “Range” switch is used on low and high while using test probe. On an oven with an unknown leakage, use high scale then switch to low scale and test for low leakage. “Bat Test” switch is used to check the battery and probe on the Holaday Instruments. If either is faulty, meter needle will not read above “Test Minimum” or battery mark on meter. Holaday Instrument has a probe test switch position. Meter needle must indicate in the “OK probe test” portion of the scale when in this position. Zero control is used to zero the needle. “ON-OFF” switch provides a means of turning the operating voltage on or off. “Range Multiplier” switch provides a means of selection either 0-2 or 0-10 and 0-100 on the Holaday Instruments sensitivity ranges.
1
2
). Probe should be
/3 cup), is to be placed in
WARNING
Hold probe perpendicular to cabinet door. Place cone of probe on the door and/or cabinet door seam and move along the seam. If leakage of the oven is unknown, move probe slowly. Proceed with care in order not to exceed a full scale reading of meter. When testing near a corner or access area of door, keep probe perpendicular to the areas making sure probe end at the base of the cone does not get closer than 2” (5cm) to any metal. If it does, an erroneous reading may result.
Always use the 2” (5cm) spacer with probe. Also, always proceed carefully in areas of high leakage or probe can be accidentally burned-out. Rotating antenna causes high peaks of energy. Although meter has averaging capabilities, probe will react instantaneously to peak power changes which will cause burn-out.
NOTE: For further instructions see Amana Service
Letters of the R-10, R-35, and R-59 of your Instrument Instruction Manual.
NOTE: Simpson Electric Company Model 380M may
also be used by using the above instructions for guideline and the 380M Instruction Manual.
Test probe must be held by the grip portion of the handle, otherwise a false reading may result if operators hand is between the handle and probe.
If oven is likely to have a large amount of leakage, approach oven slowly with the probe, while observing meter. This is achieved by holding the probe two or three feet from oven surface or gap between door and oven body while observing meter. When high leakage is expected, do not move probe horizontally along the oven surface. This could cause possible probe burn-out. Greatest leakage is generally found at the corners. After maximum leakage is established to be within the meter scale range, then probe may be moved horizontally around the door surface.
©2004 Maytag Services 16023293 Rev. 0 19
Testing Procedures
.
.
.
!
WARNI NG
To avoid risk of electrical shock, personal injury or death; disconnect power to oven and discharge capacitor before servicing, unless testing requires power.
Illustration Component Testing Results
Thermal cutout Disconnect all wires from TCO.
Diode
Capacitor
Magnetron
Blower motor Remove all wires from motor.
Measure resistance across terminals.
Cavity TCO............................................
Magnetron TCO.....................................
Discharge Capacitor
Remove diode lead from capacitor and connect ohmmeter.
Reverse leads for second test. Discharge Capacitor
Remove wires from capacitor terminals and connect ohmmeter, set on highest resistance scale to terminals.
Also check between each terminal and capacitor case. Discharge Capacitor
Remove wires from magnetron and connect ohmmeter to terminals. Also check between each terminal and ground.
Measure resistance across coil .............
Closed at 32 Opens at 230 Closed at 140 Opens at 320 Infinite resistance should be measured in one direction and 50K or more in the opposite direction.
NOTE: Ohmmeter must contain a battery of 6 volts minimum.
Between Terminals: Meter should momentarily deflect towards zero then return to over 5 M deflection occurs, or if continuous deflection occurs, replace capacitor.
Terminal to Case: Infinite resistance Between Terminals: Less than 1
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 retest.
Approximately 14 – 21
°F (0°C) and
°F (110°C)
°F (60°C) and
°F (160°C)
. If no
BELL
3
2
1
Filament
Secondary
Primary
4
20
16023293 Rev. 0
Stirrer motor Remove all wires from motor.
Transformer
Noise filter board Power In terminals .................................
6 minute timer Remove leads from timer contact
Measure resistance across terminals ....
Discharge Capacitor
Remove all wires from terminals.
Measure resistance from:
Primary ................................................
Filament...............................................
Secondary to Ground screw on
transformer stack.................................
Power Out terminals ..............................
terminals. Measure resistance of following terminals: 1 to 2
Timer in OFF position................
1 to 2Timer in ON position..................
3 to 4Timer in OFF or ON position .....
Approximately 3 – 3.5 K
Less than <1 Less than <1
Approximately 100 – 120 120 VAC 120 VAC If no power in, check power outlet. If no power out, check fuses. If timer does not indicate readings below, replace timer. Infinite Approximately <1 Approximately 11 K
Ω Ω
(timer motor)
©2004 Maytag Services
Testing Procedures
!
WARNI NG
To avoid risk of electrical shock, personal injury or death; disconnect power to oven and discharge capacitor before servicing, unless testing requires power.
Illustration Component Testing Results
Interlock switch assembly
3
4
1
2
5
6
Monitor
Primary
Disconnect wires to switch.
With door open measure resistance from:
Monitor - Terminal 3 - 4..........................
Primary - Terminal 1 - 2 .........................
Secondary - Terminal 5 - 6.....................
With door closed measure resistance from:
Monitor - Terminal 3 - 4..........................
Primary - Terminal 1 - 2 .........................
Secondary - Terminal 5 - 6.....................
Indicates continuity Infinite
Infinite
Infinite
Indicates continuity Indicates continuity
After verifying or replacing the
Secondary
module, reconnect wires to switch and check operation of monitor circuit before operating the oven.
Lamp receptacle Test continuity of receptacle terminals. Indicates continuity with bulb
Wire Harness Test continuity of wires Indicates continuity
installed.
Electronic Control Panel
Service Test Mode: Open door, Press and Hold pad 3 for 5
Error codes: E-08 ............................................................
seconds to enter service test mode.
Press Pad 1 ................................................
Press Pad 2 ................................................
Press Pad 3 ................................................
Press Pad 4 ................................................
Press Pad 5 ................................................
Press Pad 6 ................................................
Press Pad 7 ................................................
Press Pad 8 ................................................
Press Pad 9 ................................................
Press Pad 0 ................................................
Stop/Reset Pad...........................................
E-09 ............................................................
E-10 ............................................................
SERVICE appears in the display
Indicates number of hours
magnetron has been turned on Indicates number of times magnetron tube has been turned on and off Indicates number of door cycles CLEAR (Press START pad to
reset service data.) Indicates amperage N/A RESET (Clear Service Alarm) N/A N/A N/A Exit Service Test Mode Replace Control Board Replace Control Board Shorted or Open Keypad – Test and replace if necessary
Electronic Dial Control Panel
Hidden
Pad 1
50%70%
START
Hidden
Pad 2
DEFROST
Service Test Mode: Open door, Press and Hold Hidden Pad
2 for 5 seconds to enter service test mode.
Press Hidden Pad 2 ....................................
Press Hidden Pad 2 again .........................
Press Hidden Pad 2 again .........................
Press Hidden Pad 2 again .........................
Press Hidden Pad 2 again .........................
Press Hidden Pad 2 again .........................
Enters into Service Test Mode
Indicates number of magnetron hours Indicates tube cycles Indicates number of door cycles Indicates amperage Turn dial to Clear Info – When dial is rotated display indicates CLEARED INFO
©2004 Maytag Services 16023293 Rev. 0
21
Testing Procedures
!
WARNI NG
To avoid risk of electrical shock, personal injury or death; disconnect power to oven and discharge capacitor before servicing, unless testing requires power.
Illustration Component Testing Results
Electronic Control
RCS10MPA RCS10SW2A RFS12SW2A
Electronic Control
RCS10MPSA RFS12MPSA
Electronic Control
RCS10A
Dial Control
RCS10PBDA
22
16023293 Rev. 0
Keyboard assembly
1 2 3 4 5 6 7 8 9 10 11
Keyboard assembly
1 2 3 4 5 6 7 8 9 10 11
Keyboard assembly
1 2 3 4 5 6 7 8 9 10 11
Keyboard assembly
1 2 3 4 5 6 7 8 9 10 11
Continuity is indicated as 100
and below.
Continuity is indicated as 100
and below.
Continuity is indicated as 100
and below.
Continuity is indicated as
and below.
100
Pad
0 1 2 3 4 5 6 7 8 9 HOLD (0%) DEFROST (20%) MEDIUM (50%) MED-HI (70%) TIME ENTRY STOP/RESET START
Pad
0 1 2 3 4 5 6 7 8 9 QTY 2X HOLD (0%) DEFROST (20%) MEDIUM (50%) MED-HI (70%) TIME ENTRY STOP/RESET START
Pad
0 1 2 3 4 5 6 7 8 9 TIME ENTRY STOP/RESET START
Pad
30 QUICK SET HIDDEN #1 HIDDEN #2 DEFROST (20%) MEDIUM (50%) MED-HI (70%) TIME ENTRY STOP/RESET START
Trace
1 & 8 2 & 8 3 & 8 4 & 8 5 & 8 6 & 8 7 & 8 1& 9 2 & 9 3 & 8 1 & 10 2 & 10 3 & 10 4 & 10 5 & 10 6 & 10 7 & 10
Trace
1 & 8 2 & 8 3 & 8 4 & 8 5 & 8 6 & 8 7 & 8 1& 9 2 & 9 3 & 8 7 & 9 1 & 10 2 & 10 3 & 10 4 & 10 5 & 10 6 & 10 7 & 10
Trace
1 & 8 2 & 8 3 & 8 4 & 8 5 & 8 6 & 8 7 & 8 1& 9 2 & 9 3 & 8 5 & 10 6 & 10 7 & 10
Trace
1 & 8 2 & 8 3 & 8 2 & 10 3 & 10 4 & 10 5 & 10 6 & 10 7 & 10
Measurement
Continuity Continuity Continuity Continuity Continuity Continuity Continuity Continuity Continuity Continuity Continuity Continuity Continuity Continuity Continuity Continuity Continuity
Measurement
Continuity Continuity Continuity Continuity Continuity Continuity Continuity Continuity Continuity Continuity Continuity Continuity Continuity Continuity Continuity Continuity Continuity Continuity
Measurement
Continuity Continuity Continuity Continuity Continuity Continuity Continuity Continuity Continuity Continuity Continuity Continuity Continuity
Measurement
Continuity Continuity Continuity Continuity Continuity Continuity Continuity Continuity Continuity
©2004 Maytag Services
Testing Procedures
!
To avoid risk of electrical shock, personal injury or death; disconnect power to oven and discharge capacitor before servicing, unless testing requires power.
TAB 1
TAB 2
WARNI NG
RLY 3
12
8
C1N
Function Test Set-Up /
Condition
Power to current transformer Power from current transformer
Power from Oven TCO All Conditions Volts CN1 – Pin 1 (Black wire to Neutral) 120 VAC
Power to Oven Light Standby.............
Power to Blower Motor Standby.............
Secondary Interlock Switch
Power to Relay 3 Standby.............
All Conditions Volts Tab 1 to CN1 Pin 3 (Neutral) 120 VAC
All Conditions Volts Tab 2 to CN1 Pin 3 (Neutral) 120 VAC
Ready................
Cook .................
Ready................
Cook .................
Door Closed ......
Door Opened ....
Ready................
Cook .................
3
54
Meter Setting
Volts Volts Volts Volts Volts Volts Ohms Ohms
Volts Volts Volts
19
Probe Placement Results
CN1 – Pin 4 to Pin 1 .............................
CN1 – Pin 4 to Pin 1 .............................
CN1 – Pin 4 to Pin 1 .............................
CN1 – Pin 5 to Pin 1 .............................
CN1 – Pin 5 to Pin 1 .............................
CN1 – Pin 5 to Pin 1 .............................
CN1 – Pin 8 to Pin 9 .............................
CN1 – Pin 8 to Pin 9 .............................
Relay 3 – Pin 1 to Pin 2.........................
Relay 3 – Pin 1 to Pin 2.........................
Relay 3 – Pin 1 to Pin 2.........................
120 VAC 0 VAC 0 VAC 120 VAC 0 VAC 0 VAC Continuity Infinite
120 VAC 120 VAC 0 VAC
©2004 Maytag Services 16023293 Rev. 0
23
Testing Procedures
!
To avoid risk of electrical shock, personal injury or death; disconnect power to oven and discharge capacitor before servicing, unless testing requires power.
WARNI NG
Power Test
All Amana and Menumaster microwave oven power outputs are rated using the IEC705 standards. Using the IEC705 test method requires precision measurements and equipment that is not practical to be performed in the field. Using the test shown below will indicate if the oven performance is satisfactory.
Test equipment required:
1000 ml test container and thermometer (Amana power test kit R0157397 Fahrenheit / Menumaster power test kit M95D5 Celsius).
Digital watch / watch with a second hand for use on ovens with electromechanical timers.
Important Notes:
Low line voltage will cause low temperature rise / power output.
Ovens must be on a dedicated circuit, properly grounded, and polarized. Other equipment on the same
circuit may cause a low temperature rise / power output.
This test and results are not a true IEC705 test procedures and are only intended to provide servicers with an easy means of determining if the microwave oven cooking output is correct.
Procedure
1. Fill the test container to the 1000 ml line with cool tap water.
NOTE: Water temperature should be approximately 60°F / 16°C
2.
Using the thermometer, stir water for five to ten seconds; measure, and record the temperature (T1).
3. Place test container of water in the center of oven cavity and close door.
4. Heat the water for a 33-second full power cycle.
NOTE: Use a digital watch or a watch with a second hand for ovens with electromechanical timers.
1. At end of the cycle, remove test container. Using the thermometer, stir water for five to ten seconds and record temperature (T2).
2. Subtract the starting water temperature (T1), from the ending water temperature (T2) to obtain the temperature rise (?T).
3. If the temperature rise (?T) meets or exceeds the minimum, the test is complete. If the temperature rise (?T) fails to meet the minimum temperature rise, test the line voltage to verify it is correct. Then repeat steps 1-6 making sure to change the water. If the temperature rise (?T) fails to meet the minimum temperature rise again the oven will require service.
Minimum Temperature Rise at Thirty -Three (33) Seconds Run Time
?T Cooking ?T Cooking ?T Cooking ?T Cooking (°F) Power Output (°F) Power Output (°C) Power Output (°C) Power Output
10 ................. 1000 20................. 2000 5 .............. 1000 11............ 2000
11 ................. 1100 21................. 2100 5.5 ............ 1100 11.5......... 2100
12 ................. 1200 22................. 2200 6.5 ............ 1200 12............ 2200
14 ................. 1400 24................. 2400 7.5 ............ 1400 13............ 2400
17 ................. 1700 25................. 2500 9.5 ............ 1700 13.5......... 2500
18 ................. 1800 27................. 2700 10 ............. 1800 15............ 2700
19 ................. 1900 30................. 3000 10.5 .......... 1900 16.5......... 3000
24
16023293 Rev. 0
©2004 Maytag Services
Disassembly Procedures
WARNING
!
To avoid the risk of electrical shock, personal injury, or death, disconnect power to oven and discharge the 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.
Before touching any oven components or wiring, always unplug the oven from its power source and discharge 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.
1Grasp
Wire
Outer Case
1. Disconnect power to oven.
2. Remove screws securing outer case to unit.
3. Slide outer case towards rear of unit.
4. Reverse procedure to reassemble.
Insulator Pod
Non-insulated terminals:
Use a small blade screwdriver to depress locking-tab and pull on terminal.
DO NOT PULL ON WIRE.
Release
1
2
Pull
Wire
locking-tab
2Pull
CAUTION
!
During disassembly some foam gaskets may require removal. These components must be replaced for proper circulation of air over the components and through the oven cavity.
©2004 Maytag Services 16023293 Rev. 0 25
Disassembly Procedures
WARNING
!
To avoid the risk of electrical shock, personal injury, or death, disconnect power to oven and discharge the capacitors before following any disassembly procedure.
Door Assembly
CAUTI ON
!
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
3. To reinstall door, place top pin into slot first, then align
bottom pin.
4. Reinstall top hinge cap.
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. Remove screw securing door handle to latch assembly.
5. Slide latch assembly downward and pull away from door frame to release.
6. Remove screws securing choke assembly to outer door panel.
NOTE: When disassembling door, use caution to
prevent deformation of slats on door frame/choke assembly.
7. 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.
8. Remove spring from hinge assembly.
9. Remove screws securing hinge assembly to choke assembly.
10.Reassemble in reverse order.
Choke cover
Top hinge cap
Outer Door panel
Latch assembly
Door
Handle
* Tighten side screw first and apply Loctite
26 16023293 Rev. 0 ©2004 Maytag Services
Door frame/
choke assembly
Spring
Disassembly Procedures
WARNING
!
To avoid the risk of electrical shock, personal injury, or death, disconnect power to oven and discharge the capacitors before following any disassembly procedure.
!
CAUTI ON
A microwave leakage test must be performed anytime a door assembly is removed, replaced, disassembly, or adjusted for any reason.
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 tabs.
Interlock Switches
Primary switch is operated by bottom 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 mounting screws securing interlock switch to unit chassis.
6. Remove switches by carefully releasing locking tabs on switch bracket and tilting switches to remove from switch bracket.
Tab
NC
Monitor
Switch
COM
NO
Primary
Switch
COM
Secondary
Switch
NO
5. Replace component and reverse procedure to reassemble.
COM
Tab
NOTE: After repairing the door or the interlock system, it
is necessary to check the switch continuity before operating the oven.
CAUTION
!
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
©2004 Maytag Services 16023293 Rev. 0 27
Disassembly Procedures
WARNING
!
To avoid the risk of electrical shock, personal injury, or death, disconnect power to oven and discharge the capacitors before following any disassembly procedure.
replaced.
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
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,
1
/64–inch (0.5 mm).
or adjustment of switch bracket is performed.
High Voltage Capacitor
High voltage capacitor should always be discharged by shorting a terminal to a chassis ground. 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. Remove screw securing capacitor strap to bottom plate.
5. Slide capacitor out of capacitor strap and remove capacitor.
6. Replace capacitor and reverse procedure to reassemble.
NOTE: When replacing H.V. components, route H.V.
wires at least surfaces to prevent arcing.
1
/4" / 6 mm from all grounded
H.V. Capacitor
Bracket
H.V.
Capacitor
H.V.
Diode
H.V.
Transformer
Bottom
Plate
Blower Motor
Assembly
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 ground.
28 16023293 Rev. 0 ©2004 Maytag Services
Disassembly Procedures
WARNING
!
To avoid the risk of electrical shock, personal injury, or death, disconnect power to oven and discharge the capacitors before following any disassembly procedure.
4. Replace diode and reverse procedure to reassemble.
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. Replace transformer and reverse procedure to reassemble.
Fuse / Fuse Block / Filter Assembly
1. Disconnect power to oven and remove outer case, (see "Outer Case" section).
2. Disconnect and label wires.
3. Remove fuses to gain access to screws securing assembly.
4. Carefully lift tab to release assembly from locating pin.
5. Replace component(s) and reverse procedure to reassemble.
replaced.
Magnetron
Magnetron is located 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 terminal plug from filament terminals.
4. Remove screws securing magnetron cutout bracket to magnetron.
5. Remove screws securing magnetron to the wave guide.
Antenna
Gasket
Chassis
Filament
!
CAUTI ON
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
6. Replace magnetron and reverse procedure to reassemble.
NOTE: When replacing magnetron, make sure gasket is
in correct position and in good condition.
CAUTION
!
During replacement of magnetron, be certain the R.F. anode gasket is in place around the anode stud.
WARNI NG
!
A microwave leakage test must be performed anytime a magnetron assembly is removed, replaced, disassembled, or adjusted for any reason.
©2004 Maytag Services 16023293 Rev. 0 29
Disassembly Procedures
WARNING
!
To avoid the risk of electrical shock, personal injury, or death, disconnect power to oven and discharge the capacitors before following any disassembly procedure.
Blower Motor or Wheel
1. Disconnect power to oven and remove outer case, (see "Outer Case" procedure).
2. Remove outer case.
3. Disconnect wiring from blower motor.
4. Remove screws securing scroll to chassis.
5. Slide scroll discharge snout from partition and lift scroll assembly from unit.
6. Replace component and reverse procedure to reassemble.
Splatter Shield
NOTE: Be careful not to bend antenna when removing
splatter shield. Shield snaps into a lip in front of the oven and three slots in the back.
1. Place your thumbs in the two indentations in front of the shield.
2. Press lightly towards the back and carefully lower shield away from antenna.
3. Pull shield out of the back slots and out of the oven.
Splatter shield
Antenna
1. Remove splatter shield from oven cavity.
2. Remove two mounting rivets on the top of oven cavity to remove cradle. Support cradle before removing mounting rivets to avoid damage to antenna assembly.
Stirrer Motor
1. Disconnect power to oven and remove outer case, (see "Outer Case" procedure).
2. Remove outer case.
3. Disconnect wire terminal s from stirrer motor.
4. Remove screws securing stirrer motor to wave guide.
5. Replace component and and reverse procedure to reassemble.
NOTE: When replacing stirrer motor, verify motor shaft is
aligned with antenna shaft before securing with screws.
30 16023293 Rev. 0 ©2004 Maytag Services
Disassembly Procedures
WARNING
!
To avoid the risk of electrical shock, personal injury, or death, disconnect power to oven and discharge the capacitors before following any disassembly procedure.
Magnetron Thermal Cut-Out (TCO)
1. Disconnect power to oven and remove outer case, (see "Outer Case" procedure).
2. Remove outer case.
3. Remove TCO by removing screws.
4. Disconnect wiring.
5. Replace component and reverse procedure to reassemble.
NOTE: When reconnecting wiring to thermal fuses the
connectors must be tight.
Cavity Thermal Fuse
1. Disconnect power to oven and remove outer case, (see "Outer Case" procedure).
2. Remove outer case.
3. Remove thermal fuse mounting screw.
4. Disconnect wiring.
5. Replace component and reverse procedure to reassemble.
NOTE: When reconnecting wiring to thermal fuses the
connectors must be tight.
Oven Light Removal
The light bulb for inside of the oven can be changed only from the side of the unit. On the left hand side of the oven is a metal plate with one screw. The light bulb is located behind this plate.
Follow these steps to change the bulb:
1. Disconnect power to oven and remove outer case, (see "Outer Case" procedure).
2. Remove screw and plate from side of unit.
3. To remove bulb, turn it counterclockwise, being careful not to burn fingers or break the bulb.
4. Replace bulb with a 40 watt, 115 - 125 volt appliance bulb.
5. Reposition plate, being careful not to bend hinge tab. Replace and tighten screw. Do not operate oven without plate in place.
Tray Replacement
1. Unplug oven from outlet.
2. Using a suction cup to pry upward on front portion and remove tray from unit.
3. Thoroughly clean and degrease sump area.
4. Clean oven cavity bottom where new oven tray will make contact using mineral spirits or any non-flammable degreasing solvent.
NOTE: Detergents, soap, and water are not sufficient to
remove oil and grease.
5. Place new tray into unit and clean cavity with mild detergent to remove any remaining degreasing solvant.
©2004 Maytag Services 16023293 Rev. 0 31
Appendix A
©2004 Maytag Services 16023293 Rev. 0 A–1
The switching operation of this microwave oven can cause voltage fluctuations on the supply line. The operation of this oven under unfavorable voltage supply conditions can have adverse effects. This device is intended for the connection to a power supply system with a maximum permissible system impedance Zmax of 0.2 Ohms at the interface point of the user’s supply. The user has to ensure that this device is connected only to a power supply system which fulfills the requirement above. If necessary, the user can ask the public power supply company for the system impedance at the interface point.
Quick Start Reference Guide
Refer to Product Safety Manual for Safety Statements
Complete Owner’s Manual available online
Oven Wall Clearances
A—For North American (UL/CSA) models,
allow at least 2” (5.1 cm) of clearance
A
B
C
around top of oven. For International (50 Hz) models, allow at least 12” (30 cm) of clearance around top of oven. Proper air flow around oven cools electrical components. With restricted air flow, oven may not operate properly and life of electrical parts is reduced.
B—Allow at least 2” (5.1 cm) between air
discharge on back of oven and back wall.
C—Allow at least 2” (5.1 cm) of clearance
around sides of oven.
DO NOT power spray
No metal pans
So...how do I use it? (Mechanical Dial)
Heating
1. Open oven door, place food in oven, and close oven door.
2. Turn time entry knob clockwise to desired time.
• Cooking time can be set up to 6 minutes.
• Oven begins operation and time counts down.
3. When cooking time has elapsed, microwave energy stops and oven signal sounds.
Interrupting Operation
Open oven door to interrupt operation or turn time entry knob counterclockwise to “0”.
To resume microwave oven operation, close door and turn knob.
Changing Time and Canceling Mistakes
Heating time can be changed at any time while the oven is operating. Turn knob to desired new setting. To set cooking time to zero, turn knob counterclockwise to “0”.
Part No.12804404 Revised 10/04
A–2 16023293 Rev. 0 ©2004 Maytag Services
For full product documentation visit:
www.amanacommercial.com/wavelink
© 2004 Amana Appliances
Amana, Iowa 52204
Quick Start Reference Guide
Refer to Product Safety Manual for Safety Statements
So...how do I use it? (Digital Dial)
Complete Owner’s Manual available online
Heating
1. Open oven door, place food in oven, and close oven door.
2. Turn time entry knob clockwise until desired time displays.
• Factory default setting for cooking
time is 10 minutes. Cooking time can be changed and set to 60 minutes. (Refer to section on changing options)
3. Press a power level pad to change power level, if desired. If no power level is selected, unit will default to 100%.
• Power level can be set from full
power (100%), to 70%, 50% or DEFROST (20%).
4. Press START button.
• Oven begins operation and time
counts down.
5. When cooking time has elapsed, microwave energy stops and oven signal sounds.
Interrupting Operation
Open oven door to interrupt operation or turn time entry knob counterclockwise to “0”.
To resume microwave oven operation, close door and press START . If time was changed to “0”, time will need to be reset, and then press START.
Changing Time and Power/Canceling Mistakes
Heating time and power level can be changed at any time while the oven is operating. Turn knob to desired new setting. To set cooking time to zero, turn knob counterclockwise to “0”.
Hidden
Pad
Part No.12804404 Revised 10/04
:30 QUICK SET pad. By repeatedly pressing this pad, you can extend the reheating time to 5 minutes by 30 second increments. To change the time assigned to this pad:
1. Open oven door.
• If door is closed before programming is
2. Press and hold the :30 QUICK SET pad for approximately 5 seconds.
• This activates the programming
• Microwave will beep and either
?
1. Open oven door.
• If door is closed before programming is
2. Press and hold the Hidden Pad for approximately 5 seconds.
• This begins options programming
• Microwave will beep and
Numbered Pads Display Options (Factory Settings in Bold)
End of Cycle Beep
Maximum He ating Tim e
Clean Filter Message
:30 QUICK SET Pad
Allows you to reheat for 30 seconds at 100% (full) power by simply pressing the
current or assigned time will show in display.
complete, changes are discarded.
3. Turn Dial to change time setting.
• Time can be set from zero (0:00) seconds to five minutes (5:00).
• If the assigned time is 0:00, the :30
mode.
QUICK SET pad is effectively disabled.
4. Press START pad to save changes.
Can I change an option?
Options can be changed to suit individual preferences.
To change options:
3. Press the Hidden Pad to advance to the desired option to be changed.
complete, changes are discarded and microwave exits options programming mode.
mode.
0P:--0P:--
0P:--
0P:--0P:--
appears in display.
1
2
Speak er Volume
3
Key Beep
4
Keyboard Enable
Window
5
Add Time During
Heating
6
Reset Door Open
7
(some models)
0
OP:10
OP:11
OP:12
OP:20
OP:21
OP:22
OP:23
OP:30
OP:31
OP:40
OP:41
OP:42
OP:43
OP:50
OP:51
OP:60
OP:61
OP:70
OP:71
OP:00
OP:01
OP:02
OP:03
For full product documentation visit:
www.amanacommercial.com/wavelink
• See table below for options.
4. Turn Dial to change option setting.
0P:0P:
0P: and option number appear in
0P:0P:
display.
• See table below for options.
5. Press START pad to save changes.
• To change additional options, repeat
steps 2 - 5.
• Changes appear after door is
closed.
3 second continuous be ep.
Continuous beep until door is opened.
5 beep bursts until door is opened.
Eliminates beep.
Sets volume to low.
Sets volume to medium.
Sets volu me to high.
Prevents beep when pad is pressed.
Allows beep when pad is pressed.
15 seconds after oven door is opened, keyboard disabled.
30 seconds after oven door is opened, keyboard disabled.
1 minute after oven door is opened, keyboard disabled.
2 minutes after oven door is opened, keyboard disabled.
Prevents adding heating time while oven is heating.
Allows heating time to b e changed while ov en is heating when a memory pad is pressed.
Allows oven to resume heating time countdown after door is opened during cycle.
Cancels heating time count down after door is opened during cycle.
Allows 60 minutes of heating time.
Allows 10 minutes of heating time.
Do not display message.
Display message for 24 hours every 7 days.
Display messa ge for 24 hours every 30 days.
Display messa ge for 24 hours every 90 days.
© 2004 Amana Appliances
Amana, Iowa 52204
©2004 Maytag Services 16023293 Rev. 0 A–3
CLEAN FILTERCLEAN FILTER
CLEAN FILTER
CLEAN FILTERCLEAN FILTER
Quick Start Reference Guide
Refer to Product Safety Manual for Safety Statements
Complete Owner’s Manual available online
This oven displays CLEAN FILTER at user defined intervals. When the message displays Amana recommends cleaning the air filter thoroughly. Cleaning the air
filter will not shut off the message.
The message will stop displaying automatically after 24 hours. Depending on microwave use and environmental conditions, the filter may need to be cleaned more frequently. Once the frequency is determined, set the option for
the appropriate time frame.
7
Preprogrammed Pads
To cook food using preprogrammed cooking sequences:
1. Open oven door and place food in oven. Close door.
2. Press desired pad.
3. Oven begins to cook.
4. At end of cooking cycle oven beeps and shuts off.
QTY
2X
To change the cooking factor:
1. Open oven door.
2. Press and hold pad 1 for approximately 5 seconds.
3. Press pad to be reprogrammed.
4. Press the QTY 2X pad.
5. Press a numbered pad to change the cooking factor.
• Cooking factor can be set
• Default is 80%.
• Pad 5 would change the
6. Press START pad to save changes.
QTY 2X Programming
(some models)
from 10% to 100%.
cooking factor to 50%.
Oven Wall Clearances
A—For North American (UL/CSA) models, allow at least
A
B
C
2” (5.1 cm) of clearance around top of oven. For International (50 Hz) models, allow at least 12” (30 cm) of clearance around top of oven. Proper air flow around oven cools electrical components. With restricted air flow, oven may not operate properly and life of electrical parts is reduced.
B—Allow at least 2” (5.1 cm) between air discharge on
back of oven and back wall.
C—Allow at least 2” (5.1 cm) of clearance around sides
of oven.
So...how do I use it? (Electronic Control)
Manual Operation
To cook food using a specific entered time and power level:
1. Open oven door and place food in oven. Close door.
2. Press TIME ENTRY pad and enter cooking time.
3. Press a power level pad to change power level if desired (some models).
COOK LEVEL displays with the power setting.
4. If stage cooking is desired, press TIME ENTRY pad and repeat steps 2 through 4, (some models).
5. Press START pad.
6. At end of cooking cycle oven beeps and shuts off.
Programming Items
1. Open oven door.
2. Press and hold pad 1 for approximately 5 seconds.
3. Press pad to be reprogrammed.
4. Enter cooking time by using the number pads.
5. Press a power level pad to change power level if desired.
6. If stage cooking is desired, press TIME ENTRY pad.
• Display briefly shows the stage number.
• Display changes to cook time and power level for the next stage.
7. Enter cook time and power level as in steps 4 and 5 (some models).
• To enter another cooking stage for that pad, press TIME ENTRY pad again.
• Up to four different stages can be programmed (some models).
8. Press START pad to set new programming changes to the pad.
NOTE: To discard changes, press STOP/RESET pad or close oven door.
QTY 2X Pad (some models)
1. Open oven door and place food in oven. Close door.
2. Press QTY 2X pad.
3. Press desired preprogrammed pad or pad sequence.
4. Oven begins cooking. Displayed cooking time is the total of original cooking time and added 2X time.
The switching operation of this microwave oven can cause voltage fluctuations on the supply line. The operation of this oven under unfavorable voltage supply conditions can have adverse effects. This device is intended for the connection to a power supply system with a maximum permissible system impedance Zmax of 0.2 Ohms at the interface point of the user’s supply. The user has to ensure that this device is connected only to a power supply system which fulfills the requirement above. If necessary, the user can ask the public power supply company for the system impedance at the interface point.
A–4 16023293 Rev. 0 ©2004 Maytag Services
Refer to Product Safety Manual for Safety Statements
DO NOT power spray
No metal pans
Numbered Pads Display Options (Factory Settings in Bold)
1
End of Cycle Beep
2
Speaker Volume
3
Key Beep
4
Keyboard Enable
Window
5
Add Tim e During
Heating
6
Reset Door Open
7
(some models)
Maximum Heating Time
8
Manual Operation
9
(some models)
Double Digi t Operation
0
Clean Filter Message
Part No.12804405 Revised 10/04
Quick Start Reference Guide
Complete Owner’s Manual available online
Can I change an option?
Options such as single or double pad programming, beep volume, and
?
To change options:
1. Open oven door.
2. Press and hold pad 2 for approximately 5 seconds.
3. Press number pad that controls option to be changed.
4. Press number pad again to change the option.
5. Press START pad to save changes.
OP:10
OP:11
OP:12
OP:20
OP:21
OP:22
OP:23
OP:30
OP:31
OP:40
OP:41
OP:42
OP:43
OP:50
OP:51
OP:60
OP:61
OP:70
OP:71
OP:80
OP:81
OP:90
OP:91
OP:00
OP:01
OP:02
OP:03
maximum cooking time can be changed to suit individual preferences.
• If door is closed or RESET pad is pressed before programming is complete, changes are discarded and microwave exits programming mode.
• This begins options mode.
• Microwave will beep and 0P: displays.
• See table below for options.
• Current option will display.
• Each time pad is pressed, option will change.
• Match code displayed with code for desired option.
• To change additional options, repeat steps 3 and 4.
• Changes appear after door is closed or STOP/RESET pad is pressed.
3 second beep.
Continuous beep until door is opened.
5 beep bursts until door is opened.
Eliminates beep.
Sets volume to low.
Sets volume to medium.
Sets volume to high.
Prevents beep when pad is pressed.
Allows beep when pad is pressed.
15 seconds after oven door is opened, keyboard disabled.
30 seconds after oven door is opened, keyboard disabled.
1 minute after oven door is opened, keyboard disabled.
2 minutes after oven door is opened, keyboard disabled.
Prevents adding heating time while oven is heating.
Allows heating time to be changed while oven is heating when a memory pad is pressed.
Allows oven to resume heating time countdown after door is opened during cycle.
Cancels heating tim e count down after door is opened during cycle.
Allows 60 minutes of heating time (some mo dels).
Allows 10 minutes of heating time.
Allows use of preprogrammed pads only.
Allows u se of manual time entry and preprogrammed pads.
Allows 10 (0-9) preprogrammed pads.
Allows 100 (00-99) preprogrammed pads.
Do not display message.
Display message for 24 hours every 7 days.
Display message for 24 hours every 30 days.
Display message for 24 hours every 90 days.
For full product documentation visit:
www.amanacommercial.com/wavelink
© 2004 Amana Appliances
Amana, Iowa 52204
©2004 Maytag Services 16023293 Rev. 0 A–5
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