Amana Menumaster MOC5241 SERVICE MANUAL

50 Hz

February 2016

Commercial Microwave Oven

Style of oven handle may vary

AOC5241 MOC5241 OC5241BK OC5241T1BK MOC5201 MOC5201J

Service Manual

MOC5200 MOC6200 OC24BKSA MOC5241I

OC5241HJ MOC5201U

16400008

Rev.2

February 2016

TABLE OF CONTENTS

IMPORTANT INFORMATION .................................................................................................... 1

IMPORTANT SAFETY INFORMATION .................................................................................. 2-5

Oven Specifications .............................................................................................................. 6

Oven Construction ........................................................................................................... 7-11

Oven Performance Test ................................................................................................................... 12

Component Test Procedures .......................................................................................... 13-16

Troubleshooting Chart .................................................................................................... 17-18

Wiring Diagram ................................................................................................................... 19

Schematic Diagram ............................................................................................................. 20

- ii -

Important Information

CAUTION

WARNING

DANGER

WARNING

To avoid risk of severe personal injury or death, disconnect power before working/servicing on appliance to avoid electrical shock.

Important Notices for Servicers and Consumers

ACP 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.

APPROPRIATE SERVICE INFORMATION BEFORE BEGINNING REPAIRS.

IT IS THE TECHNICIANS RESPONSIBLITY TO REVIEW ALL

To locate an authorized servicer please contact:

ComServ Support Center

Web Site

Recognize Safety Symbols, Words, and Labels

WWW.ACPSOLUTIONS.COM E-Mail: commercialservice@acpsolutions.com

Telephone Number

.......................

1-866-426-2621 or 319-368-8195

DANGER—

Immediatehazardswhich

WILL

resultinsevere personalinjuryordeath.

WARNING—

Hazards orunsafe practices which

COULD

result insevere personal injuryordeath.

CAUTION—

Hazards orunsafe practices which

damage.

COULD

result inminorpersonal injury, productorproperty

Important Safety Information

Read the following information to avoid possible exposure to microwave radiation: The basic design of the 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 to maintain this safety. These are as follows:

Always operate the unit from an adequately

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

Before servicing the unit (if unit is operable) perform

the microwave leakage test.

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.

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.

Contact ACP ComServ

Always have the oven disconnected when the outer

case is removed except when making the "live" tests called for in the 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.

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.

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.

immediately.

WARNING

Do not for any reason defeat the interlock

switches there is not valid reason for this action at any time; nor will it be condoned by ACP.

IMPORTANT: Before returning a unit to a

customer, be sure to check for proper switch interlock action.

10.

The Microwave Oven should never be

operated with any components removed and/or bypassed or when any of the safety interlocks are found to be defective, or when any of the seal surfaces are defective, missing, or damaged.

11.

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/cm2.

12.

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 amicrowave oven leakage meter that complies with US Government CDRH / FDA / DHHS requirements and or any other local government requirements. The maximum leakage level allowed by ACP

is 4mw/cm .

13.

If servicer encounters an emission reading over

4mw/cm2, the servicer is to cease repair and contact the ACP ComServ Department immediately for further direction. ACP will contact the proper Government Agency upon verification of the test results.

IMPORTANT SAFETY INSTRUCTIONS

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 too 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.

Recognize this symbol as a SAFETY message

When using electrical equipment, basic safety precautions should be followed to reduce the risk of burns, electrical shock, fire, or injury to persons including the following.

1. READ all instructions before using equipment.

2. READ AND FOLLOW the specific “PRECAUTIONS TO AVOID POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGY” on this page.

3. This equipment MUST BE GROUNDED. Connect only to properly GROUNDED outlet. See “ GROUNDING / EARTHING INSTRUCTIONS” on page 5.

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—are able to 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, cook, or dry food. It is not designed for industrial or laboratory use.

7. As with any equipment, CLOSE SUPERVISION is necessary when used by CHILDREN.

8. See door cleaning instructions on page A-4 of this owners manual.

WARNING

9. DO NOT heat baby bottles in oven.

10. Baby food jars shall be open when heated and contents stirred or shaken before consumption, in order to avoid burns.

11 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.

12. 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.

13. DO NOT cover or block louvers or other openings on equipment.

14. DO NOT store this equipment outdoors. DO NOT use this product near water – for example, near a kitchen sink, in a wet basement, a swimming pool, or a similar location.

15. DO NOT immerse cord or plug in water.

16. Keep cord AWAY from HEATED surfaces.

17. DO NOT let cord hang over edge of table or counter.

18. For commercial use only.

SAVE THESE INSTRUCTIONS

IMPORTANT SAFETY INSTRUCTIONS

CAUTION

WARNING

Liquids such as water, coffee, or tea are able to be overheated beyond the boiling point without appearing to be boiling due to surface tension of the liquid. Visible bubbling or boiling when the container is removed from the microwave oven is not always present. THIS COULD RESULT IN VERY HOT LIQUIDS SUDDENLY BOILING OVER WHEN A SPOON OR OTHER UTENSIL IS INSERTED INTO THE LIQUID. To reduce the risk of injury to persons:

i) Do not overheat the liquid. ii) Stir the liquid both before and halfway through

heating it.

iii) Do not use straight-sided containers with narrow

necks.

iv) After heating, allow the container to stand in the

microwave oven for a short time before removing the container.

v) Use extreme care when inserting a spoon or

other utensil into the container.

WARNING

To avoid risk of fire in the oven cavity:

a. DO NOT overcook food. Carefully attend oven

when 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. If materials inside the oven ignite, keep oven

door CLOSED, turn oven off and disconnect the power cord, or shut off power at the fuse or circuit breaker panel.

d. DO NOT use the cavity for storage. DO NOT

leave paper products, cooking utensils, or food in the cavity when not in use.

To avoid personal injury or property damage, observe the following:

1. Do not deep fat fry in oven. Fat could overheat and be hazardous to handle.

2. 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.

3. Pierce skin of potatoes, tomatoes, and similar foods before cooking with microwave energy. When skin is pierced, steam escapes evenly.

4. Do not operate equipment without load or food in oven cavity.

5. Microwave popcorn should not be popped in oven.

6. Do not use regular cooking thermometers in oven. Most cooking thermometers contain mercury and may cause an electrical arc, malfunction, or damage to oven.

7. Do not use metal utensils in oven.

8. Do not use aluminum foil in oven

SAVE THESE INSTRUCTIONS

9. Never use paper, plastic, or other combustible materials that are not intended for cooking.

10. When cooking with paper, plastic, or other

combustible materials, follow manufacturer’s

recommendations on product use.

11. Do not use paper towels which contain nylon or other synthetic fibers. Heated synthetics could melt and cause paper to ignite.

12. 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.

13. To avoid pacemaker malfunction, consult physician or pacemaker manufacturer about effects of microwave energy on pacemaker.

14. An authorized servicer MUST inspect equipment annually. Record all inspections and repairs for future use.

Important Safety Information

WARNING

To avoid the risk of electrical shock or death, this equipment must be grounded.

WARNING

To avoid the risk of electrical shock or death, do not alter the plug.

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 risk of electrical shock, injury or death; make sure these grounding instructions are followed.

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

Grounding Instructions

This equipment 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 an appropriate receptacle. This oven should be plugged into a separate 50 or 60 hertz circuit with the electrical rating as shown in the appropriate drawing. Models operate with a 208 or 230 supply voltage. When an oven is on a circuit with other equipment, an increase in cooking times may be required and fuses can be blown.

MUST

be grounded. In the event of an

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