Sharp R-210A specifications Test Procedures Component Test Letter, ΔT1

Page 11

 

 

 

R-210A

 

TEST PROCEDURES

 

 

 

 

 

 

PROCEDURE

COMPONENT TEST

 

 

LETTER

 

 

 

 

 

 

 

 

 

 

Initial temperature

T1

= 11°C

 

Temperature after (60 + 2) = 62 sec

T2

= 21°C

 

Temperature difference Cold-Warm

ΔT1

= 10°C

 

Measured output power

 

 

 

The equation is “P = 70 x ΔT”

P = 70 x 10°C = 700 Watts

 

 

 

 

JUDGMENT: The measured output power should be at least ± 15 % of the rated output power.

CAUTION: 1°C CORRESPONDS TO 70 WATTS. REPEAT MEASUREMENT IF THE POWER IS INSUFFICIENT.

1000g

1000g

T1˚C

Heat up for 62 sec.

1000g

T2˚C

MICROWAVE OUTPUT POWER (2 Litre water load)

The following test procedure should be carried out with the microwave oven in a fully assembled condition (with outer case fitted).

Microwave output power from the magnetron can be measured by way of substitution, i.e. it can be measured by using a water load how much it can be absorbed by the water load. To measure the microwave output power in the microwave oven, the relation of calorie and watt is used.

On the other hand, if the temperature of the water with V(ml) rises ΔT (˚C) during this microwave heating period, the calorie of the water is V x ΔT.

The formula is as follows;

 

 

 

 

P x t / 4.2 = V x Δ T

P (W) = 4.2 x V x ΔT / t

 

Our condition for water load is as follows:

 

 

 

Room temperature

23±2˚C

Power supply Voltage

Rated voltage

Water load

2000 ml

Initial temperature

23±1°C Heating time

2 min. 20 sec.

P = 60 x Δ T

 

 

 

 

 

 

 

 

 

 

 

Measuring method:

A)The two water containers must be prepared.

The water container must be one (1) litre beaker made of Pyrex glass and its diameter approximately 12cm.

B)Put the one (1) litre water into each beaker (Each beaker has one litre water). The initial temperature of the water should be 23±1˚C.

C)Mark T1 on the one beaker and mark T2 on the other one. And stir the water and measure the temperature of water the thermometer and note them. The graduation of the thermometer must be scaled by 0.1˚C at minimum and an accurate mercury thermometer is recommended.

D)Place the two (2) beakers as touching each other in the centre of the oven cavity.

E)Set the timer to 2 minutes and 20 seconds, start the oven at 100% power.

F)The time must be measured with stopwatch or wristwatch.

G)After 2 minutes and 20 seconds, stop the oven by opening the door.

H)Put the two (2) beakers out of the oven cavity and measure the temperature of the water by stirring the water with thermometer and note them.

Example

Initial temperature

T1 = 23˚C

T2

= 24˚C

Temperature after 2 min. 22 sec

T1 = 33˚C

T2

= 34˚C

Temperature difference Cold-Warm

ΔT1 = 10˚C ΔT2

= 10˚C

Mean temperature rise ΔT

ΔT = (ΔT1 ± ΔT2) / 2 = (10˚C+10˚C) / 2

= 10˚C

Measured output power

 

 

 

The equation is P= 60 x ΔT

P= 60 x 10˚C = 600 Watts

NOTE: The measured output power should be at least ± 15 % of the rated output power.

9

Page 10 Page 12
Image 11
Page 10 Page 12
Contents Model R-210A Table of Contents210A General Important Information Sharp Corporation OSAKA, JapanMicrowave Oven 210AMedium LOW/ Defrost SpecificationThis Appliance Must be Earthed 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 TestΔT1 Test Procedures Component Test LetterMicrowave Output Power 2 Litre water load 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 RemovalRE-INSTALL Door ReplacementAfter adjustment, make sure of the following 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 PartsInterchangeability↔ Packing and AccessoriesSCREWS,NUTS and Washers 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.
Top Page Image Contents