Sharp R-216LS Microwave Measurement Procedure, Requirements, Preparation for testing

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R216LS

CHAPTER 2. MICROWAVE MEASUREMENT PROCEDURE

[1] Requirements:

1.Microwave leakage limit (Power density limit): The power density of microwave radiation emitted by a microwave oven should not exceed 1mW/ cm2 at any point 5cm or more from the external surface of the oven, measured prior to acquisition by a purchaser, and thereafter (through the use- ful life of the oven), 5 mW/cm2 at any point 5cm or more from the external surface of the oven.

2.Safety interlock switches: Primary interlock relay and door sensing switch shall prevent microwave radiation emission in excess of the requirement as above mentioned, secondary interlock switch shall prevent microwave radiation emission in excess of 5 mW/cm2 at any point 5cm or more from the external surface of the oven.

[2] Preparation for testing:

Before beginning the actual measurement of leakage, proceed as follows:

1.Make sure that the actual instrument is operating normally as specified in its instruction booklet. Important:

Survey instruments that comply with the requirement for instrumentation as prescribed by the performance standard for microwave ovens, 21 CFR 1030.10(c)(3)(i), must be used for testing.

2.Place the oven tray in the oven cavity.

3.Place the load of 275±5 ml (9.8 oz) of tap water initially at 20±5°C (68°F) in the center of the oven cavity.

The water container shall be a low form of 600 ml (20 oz) beaker with an inside diameter of approx. 8.5 cm (3-1/2 in.) and made of an electrically nonconductive material such as glass or plastic.

The placing of this standard load in the oven is important not only to protect the oven, but also to insure that any leakage is measured accurately.

4.Set the cooking control on Full Power Cooking Mode

5.Close the door and select a cook cycle of several minutes. If the water begins to boil before the survey is completed, replace it with 275 ml of cool water.

[3] Leakage test:

Closed-door leakage test (microwave measurement)

1.Grasp the probe of the survey instrument and hold it perpendicular to the gap between the door and the body of the oven.

2.Move the probe slowly, not faster than 1 in./sec. (2.5 cm/sec.) along the gap, watching for the maximum indication on the meter.

3.Check for leakage at the door screen, sheet metal seams and other accessible positions where the continuity of the metal has been breached (eg., around the switches, indicator, and vents).

While testing for leakage around the door pull the door away from the front of the oven as far as is permitted by the closed latch assembly.

4.Measure carefully at the point of highest leakage and make sure that the highest leakage is no greater than 4mW/cm2, and that the secondary interlock switch and the primary interlock relay do turn the oven OFF before any door movement.

NOTE: After servicing, record data on service invoice and microwave leakage report.

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Contents Model R-216LS Component Replacement Precautions for Using Lead Free SolderAdjustment Procedure Microwave Measurement PROBefore Servicing Before Servicing When the testing is completedAfter repairing Preparation for testing Microwave Measurement ProcedureRequirements Leakage testForeword Foreword and WarningDescription Product Description 1 SpecificationsGeneral Information Oven DiagramGrounding Instructions OvenTouch Control Panel Power Output Reduction Power Level CookingDescription of Operating Sequence OFF ConditionOven Schenatic Schematic Door Closed Clock Appears on DisplayOff Condition Cooking ConditionDescription and Function of Components Troubleshooting Chart Troubleshooting GuideProcedure a Magnetron Assembly Test Test ProceduresProcedure B Power Transformer Test Procedure C High Voltage Rectifier TestProcedure E Temperature Fuse Oven Test Procedure D High Voltage Capacitor TestProcedure F Secondary Interlock Switch Test Procedure F Primary Interlock System TestPrimary Interlock Relay RY2 Procedure G Monitor Switch TestProcedure H Blown Minitor Fuse Test Procedure J Touch Control Panel Assembly Test Procedure I Noise Filter TestKey Unit Control UnitProcedure L Relay Test Procedure K KEY Unit TestProcedure N Foil Pattern on the Printed Wiring Board Test Procedure M Defrost TestR216LS Precautions for Handling Electronic Components Touch Control Panel AssemblyOutline of Touch Control Panel Servicing for Touch Control PanelServicing Tools Other PrecautionsUsing lead-free wire solder Precautions for Using LEAD-FREE SolderEmploying lead-free solder SolderingOuter Case Removal Component Replacement and Adjustment PROCE- DurePositive Lock Connector NO-CASE Type Removal Power Transformer RemovalReinstall Magnetron RemovalTrol Panel Assembly Removal Control Panel Assembly RemovalGraphic Sheet and Membrane Switch Replacement Cooling FAN Motor Removal Power Supply Cord ReplacementTurntable Motor Removal Adjustment InstallationMake Sure That the FAN Blade Rotates Smooth After Installed Make Sure That the Axis of the Shaft is not SlantedAfter any service, make sure of the following Door ReplacementAfter adjustment, check the following Sealer Film Figure C-7. Door ReplacementPictorial Diagram Figure DiagramsLiquid Crystal Display Control Panel Circuit Figure S-2DIP Printed Wiring Board Figure S-3Unit CodeMeno Parts Guide Oven Parts Parts Code Price NEW Description Rank Mark Oven PartsDoor and Control Panel Parts Door and Control Panel Parts „INDEX

R-216LS specifications

The Sharp R-216LS is a versatile microwave oven that combines affordability with a range of features designed to enhance your cooking experience. Compact yet powerful, this model is especially suitable for small kitchens or dorm rooms, where space is at a premium.

One of the standout features of the Sharp R-216LS is its impressive 800 watts of cooking power. This ensures quick and efficient heating, allowing users to prepare meals in a fraction of the time compared to conventional ovens. The microwave also features a variety of power levels, providing flexibility for different types of cooking and reheating tasks, from defrosting frozen food to cooking delicate items like baked goods.

The R-216LS comes equipped with a spacious 20-liter capacity, which is surprisingly roomy for its size. This allows for ample space to heat up large dishes or multiple servings at once. The interior is designed with easy cleaning in mind, featuring a non-stick coating that prevents food from adhering to the surfaces and simplifies maintenance.

In terms of usability, the Sharp R-216LS boasts a user-friendly interface with straightforward knobs and buttons. It includes a timer and a range of pre-programmed cooking options, enabling users to cook a variety of foods with just the touch of a button. This is particularly beneficial for those new to microwave cooking or for busy individuals looking to save time.

The microwave also incorporates advanced technologies, including inverter microwave technology, which provides a continuous stream of cooking power for more even heating and defrosting. This ensures that your food is cooked thoroughly without the risk of hot and cold spots.

Safety is another priority in the design of the R-216LS. It features a child safety lock, which prevents accidental operation, making it a perfect choice for families with young children. The model also has an automatic shut-off feature, ensuring that the microwave turns off when not in use.

In summary, the Sharp R-216LS is a compact microwave that offers a blend of power, convenience, and safety features, making it an excellent choice for anyone seeking a reliable cooking appliance. Whether for reheating leftovers, cooking meals, or defrosting ingredients, this microwave is designed to meet the diverse needs of modern kitchens. With its combination of thoughtful design and functionality, the R-216LS stands out as a worthy investment for those looking for efficiency and performance in their cooking appliances.
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