Sharp R-210A specifications Function of Important Components

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R-210A

FUNCTION OF IMPORTANT COMPONENTS

DOOR OPEN MECHANISM

The door can be opened by pushing the open button on the control panel. When the open button is pushed, the switch lever on the latch hook is moved upward, operating the latch head. The latch head is moved upward, and released from the latch hook. Now, the door can be opened.

LATCH HOOK

LATCH

1ST. LATCH

HEADS

SWITCH

MONITOR

SWITCH

DOOR

2ND. LATCH

SWITCH

SWITCH LEVER

setting of cook time or failure of control unit. Under normal operation, the temp. fuse remains closed. However, when abnormally high temperatures are reached within the oven cavity, the temp. fuse will open at 120˚C, causing the oven to shut down. The defective fuse must be replaced with a new one.

THERMAL CUT-OUT 95˚C (MAGNETRON )

The thermal cut-out located on the top of the oven cavity is designed to prevent damage to the magnetron if an over heated condition develops in the tube due to cooling fan failure, obstructed air guide, dirty or blocked air intake, etc. Under normal operation, the thermal cut-out remains closed. However, when abnormally high temperatures are reached within the magnetron, the thermal cut-out will open at 95˚C, causing the oven to shut down. When the magnetron has cooled to 75˚, the thermal cut-out closes and cook cycle will resume.

Figure D-1. Door Open Mechanism

1ST. LATCH SWITCH AND 2ND. LATCH SWITCH

1.When the oven door is closed, the contacts (COM-NO) must be closed.

2.When the oven door is opened, the contacts (COM- NO) must be opened.

NOISE FILTER

The noise filter prevents the radio frequency interference that might flow back in the power circuit.

TURNTABLE MOTOR

The turntable motor drives the roller stay to rotate the turntable.

MONITOR SWITCH

1.When the oven door is closed, the contacts (COM-NC) must be opened.

2.When the oven door is opened, the contacts (COM- NC) must be closed.

3.If the oven door is opened and the contacts (COM-NO) of the 1st latch switch and 2nd latch switch fail to open, the fuse blows simultaneously with closing the con- tacts (COM-NC) of the monitor switch.

CAUTION: BEFORE REPLACING A FUSE TEST THE 1ST LATCH SWITCH, 2ND LATCH SWITCH AND MONITOR SWITCH FOR PROPER OPERATION. (REFER TO CHAPTER "TEST PROCEDURE".)

FUSE

1.The fuse blows when the contacts (COM-NO) of the 1st latch switch and 2nd latch switch remain closed with the oven door open and when the monitor switch closes.

2.If the wire harness or electrical components are short- circuited, the fuse blows to prevent an electric shock of fire hazard.

HIGH VOLTAGE FUSE

The high voltage fuse blows when the high voltage rectifier or the magnetron is shorted.

TEMPERATURE FUSE 120˚C (OVEN)

The temp. fuse located on the top of the oven cavity is designed to prevent damage to the oven if the foods in the oven catch fire due to over heating produced by improper

FAN MOTOR

The fan motor drives a blade which draws external cool air. This cool air is directed through the air vanes surrounding the magnetron and cools the magnetron. This air is chan- nelled through the oven cavity to remove steam and vapours given off from the heating foods. It is then ex- hausted through the exhausting air vents at the oven cavity.

TIMER MOTOR (WITH VARI-SWITCH)

Timer switch

1.When the timer is at "0" position, the switch of the timer are opened.

2.When the timer is turned clockwise from "0" position, the switch of the timer are closed.

Vari-switch

If the variable cooking control is set at HIGH, MEDIUM HIGH, MEDIUM, MEDIUM LOW or LOW cooking posi- tion, Rated voltage is supplied to the power transformer intermittently within a 30 seconds time base. The fol- lowing chart shows the vari-switch operation in the various modes.

SETTING

30 sec. ON

 

 

 

HIGH

 

 

 

 

 

 

Approx. 100%

 

23.2 sec. ON

6.8 sec. OFF

MEDIUM HIGH

 

 

 

 

 

 

Approx. 70%

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

16.5 sec. ON

13.5 sec. OFF

MEDIUM

 

 

 

 

 

 

Approx. 50%

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

9.8 sec. ON 20.2 sec. OFF

MEDIUM LOW

 

 

 

 

 

 

Approx. 30%

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5.0 sec. ON

25 sec. OFF

LOW

 

 

 

 

 

 

Approx. 10%

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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Contents Model R-210A Table of Contents210A General Important Information Sharp Corporation OSAKA, JapanMicrowave Oven 210AThis Appliance Must be Earthed SpecificationMedium LOW/ Defrost Control Panel Appearance ViewMedium HIGH, MEDIUM, Medium LOW, LOW Cooking Operation SequenceOFF Condition Microwave Cooking ConditionFunction of Important Components Remember to Check 4R Troubleshooting GuideServicing Remember to Check 3DC D E E E F F I I I G G HJ K Troubleshooting ChartTest Procedure Possible Cause Defective Parts ProblemMicrowave Output Power IEC Test Procedures Letter Component Test Magnetron TestMicrowave Output Power 2 Litre water load Test Procedures Component Test LetterΔT1 High Voltage Rectifier Test Carry OUT 3D Checks Test Procedures Letter Component TestPower Transformer Test Carry OUT 4R ChecksFuse 13A Switch TestTemperature Fuse or Thermal CUT-OUT Test Motor Winding Test Carry OUT 3D ChecksNoise Filter Test Carry OUT 3D Checks Timer Motor with VARI-SWITCH TestTimer SWITCH- Contacts Timer MotorTo prevent an electric shock, take the following Component Replacement and Adjustment ProcedurePower Transformer Removal Outer Case RemovalOven Lamp Socket Removal Magnetron ReplacementPositive Lock Connector Removal Re-installRemoval Power Supply Cord ReplacementTurntable Motor Replacement FAN Motor ReplacementRear View Control Panel Assembly and Switch Lever RemovalInstallation Control Panel Assembly and Switch LE- VER RemovalAfter adjustment, make sure of the following Door ReplacementRE-INSTALL Sealer Film InstallationHoladay HI Simpson 380M Preparation for TestingMicrowave Measurement RequirementOven Schematic-OFF Condition Oven Schematic-ON ConditionHigh Voltage Components Figure S-1. Pictorial DiagramOven Parts Electric PartsCabinet Parts Control Panel PartsSCREWS,NUTS and Washers Packing and AccessoriesInterchangeability↔ Oven and Cabinet Parts Control Panel Parts Door Parts Miscellaneous 210A

R-210A specifications

The Sharp R-210A is a notable microwave oven that stands out in the crowded kitchen appliance market. Renowned for its practicality and efficiency, this model is designed to cater to the needs of modern households while offering an array of advanced features.

One of the key highlights of the Sharp R-210A is its powerful 1000 watts of cooking power, which ensures quick cooking and reheating. With a range of cooking options, this microwave can handle various tasks from defrosting frozen foods to cooking meals evenly and efficiently. The unit boasts a 22-liter capacity, making it suitable for small to medium-sized kitchens. Its compact design allows for easy integration into different kitchen layouts without taking up excessive counter space.

The Sharp R-210A employs innovative technology to enhance cooking performance. It features a turntable system that ensures food is cooked uniformly by rotating dishes during the cooking cycle. This feature is particularly advantageous when heating large or unevenly shaped food items, as it helps prevent cold spots. Additionally, the microwave includes a convection option, bringing versatility to food preparation by combining microwave energy with convection heat to produce crispy results akin to traditional ovens.

User-friendliness is a hallmark of the Sharp R-210A, with an intuitive control panel that simplifies operation. The keypad is designed for easy navigation, allowing users to select cooking times and power levels quickly. It also includes pre-programmed settings for popular dishes, making meal preparation even more straightforward. The microwave features a timer and clock function, providing added convenience.

Safety is a crucial consideration in microwave design, and the Sharp R-210A does not disappoint. It comes equipped with a child lock feature to prevent accidental operation, making it a suitable choice for families. The unit also has an automatic shut-off feature that activates after cooking, reducing the risk of overheating or burning food.

In summary, the Sharp R-210A microwave oven combines robust power, innovative technology, and user-friendly features. With its ample capacity, intuitive controls, and safety measures, it continues to be a reliable choice for those looking to simplify their cooking experiences in the kitchen. Whether you're reheating leftovers or preparing a full meal, the Sharp R-210A is equipped to meet various culinary needs with ease and efficiency.
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