Panasonic NN-ST557W, NN-ST557M manual Microwaves and How They Work, Cookware and Utensils Guide

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Microwaves and How They Work

Microwaves are a form of high frequency radio waves similar to those used by a radio, including AM, FM and CB. They are similar to a television where the radio waves are converted to a picture on the screen. However, microwaves are much shorter than radio waves; approximately twelve centimetres wave length. Electricity is converted into microwave energy by the magnetron tube (which is the heart of the microwave oven).

From the magnetron tube, microwave energy is transmitted to the oven cavity through a small plastic covered piece. The microwaves are converted to heat in the food. The microwaves enter from the outside of the food and travel through the food losing half of their power every two to three centimetres. Continued cooking to the centre occurs by conduction.

Although pacemakers used to be affected by microwaves (as well as by other radio waves), they are now shielded and are not bothered by these interferences. This allows people with pacemakers to sit calmly by their radio or television and cook with microwave ovens.

When microwaves come in contact with a substance, any one or combination of three things may occur. They can be:

1.REFLECTED

2.TRANSMITTED

3.ABSORBED

Reflection:

Metal substances REFLECT microwave energy and because there is no absorption, there is no heating. This is why the oven interior is either stainless steel or epoxy-coated steel. This ensures that the microwaves are kept inside the cavity and evenly distributed throughout the food with the help of the turntable.

Transmission:

Such substances as paper, glass and plastic TRANSMIT microwave energy and do not become hot except from food. Because these substances do not reflect or absorb microwave energy, they are ideal materials for microwave cooking containers.

Absorption:

Food contains moisture and will ABSORB microwave energy, which causes the moisture molecules within the food to vibrate at an incredible rate (2,450,000,000 times per second). Friction, created by the vibration, produces heat energy which is conducted throughout the food.

Cookware and Utensils Guide

It is important to use the correct container when cooking in a microwave oven. The following will help you make the right selection.

How to Test a Container for Safe Microwave Oven Use

TO TEST A CONTAINER FOR SAFE MICROWAVE OVEN USE: Fill a 1-cup glass measure with cool water and place it in the microwave oven alongside the empty container to be tested; heat one (1) minute at HIGH. If the container is microwave oven- safe (transparent to microwave energy), the container should remain comfortably cool, the water in glass measure should be hot. If the container is hot, it has absorbed some microwave energy and should NOT be used. This test cannot be used for plastic containers.

Paper Products and Freezer Wrap

Waxed paper, paper plates, cups and napkins should not be used for heating or cooking food. Freezer wrap should not be used as it is not heat resistant and may melt. Paper towel, greaseproof paper and bake paper may be safely used for short periods of time for covering or lining.

Glass, Ceramic and China

Heat-Resistant glass cookware is invaluable in microwave cooking. Many of these items are readily available in most homes: glass jugs, mixing bowls, loaf dishes, covered casseroles, oblong baking dishes, pie plates and round or square cake dishes. Examples of this type of cookware are Pyrex® and Corningware®.

Dinnerware can be used for microwave heating. Many brands of dinnerware are microwave safe. Check the care information for reference to microwave use for dinnerware and serving pieces. If dinnerware is marked ovenproof, it frequently is safe to use in the microwave oven. However, to be sure, check by conducting microwave dish test previously mentioned.

Several types of glassware and dinnerware are not recommended for use in the microwave oven. Do not use dishes with metallic trim or containers with metal parts. Do not use cups or mugs with glued on handles, as they may fall off with continued heating. Do not use delicate glassware. Although the glassware may be transparent to microwave energy the heat from the food may cause the glassware to crack.

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Contents Book Cook Operation Guide Frenchs Forest NSW Panasonic Consumer CompanyTable of Contents Safety Instructions Important InstructionsEarthing Instructions General Use Installation and General InstructionsPlacement of Oven CircuitsMicrowaves and How They Work Cookware and Utensils GuideJars and Bottles Cookware and Utensil GuidePlastics MetalFeature Diagram Beep Sound Stop/Reset PadControl Panel Auto Cook Pads pgLet’s Start To Use Your Oven Operation Guide in the Display WindowPress Twice To Use Child Safety LockTo Set Clock Enter Time of DaySet Cooking Time Micro PowerPower Level Wattage Example of USE For more than one stage cookingSet Weight Defrosting is done on Defrost PowerTo Defrost Preparation for Freezing Defrosting Chart by setting Micro Power at DefrostDefrosting Tips and Techniques Defrosting TechniqueTo Reheat Food Using Auto Reheat / Frozen Reheat Pads Frozen Reheat 250 g 850 gWeight To Set Delay Start To Use Timer PadTo Use as a Kitchen Timer Press once Set desired amount of delay timeBefore Requesting Service These Things are NormalAfter Cleaning Technical SpecificationsBefore Cleaning Care of Your OvenPanasonic Warranty Should be Retained by the Customer AT ALL TimesFeature How to Operate Quick Guide to OperationMemo Memo Turn over for Operation Guide Microwave Recipe Preparation and Techniques Food CharacteristicsKey to Symbols Used In Recipes Techniques for PreparationCovering BrowningStanding Time Cooking for One Menu Planning for Microwave CookingIncreasing & Decreasing Recipes Converting Recipes from Other SourcesReheating General rules for reheating foods by Micro PowerReheat Reheating by Auto Cook Å 850 gReheating by Micro Power Frozen Pre-cooked Foods Starting Temperature VolumeLarge Volume Soups and Snacks HintsMethod Soup Ingredients SoupLaksa To serveFish or Shellfish Amount Power Cooking Fish and Shellfish by Micro powerCooking Fish and Shellfish using Micro power Fish and ShellfishFresh mussels Noise Cooking Poultry by Micro power Cooking Whole Poultry by Micro powerCooking Poultry Pieces by Micro power EggsCooking Chicken Pieces by Auto Cook Å Minimum weight 400g / Maximum weight 1.0kgPoultry and Eggs To Operate for Auto CookHoney Mustard Glaze Cooking Eggs by Micro Power Cooking Meat by Micro power Cooking Tender Cuts of Meat by Micro powerCooking Less-Tender Cuts of Meat by Micro power Meat Power APPROX. Cooking TimeMeat HintTeaspoon Minced garlic Paprika 750 g Method Meat Sauce Ingredients Meat Sauce 500 gCheese Sauce Ingredients 500 gVegetables and Legumes Cooking Fresh Vegetables by Micro powerVegetable Quantity Cooking Procedure Time ApproxCooking Frozen Vegetables by Micro power Cooking Dried Beans and Peas by Micro PowerLegumes Potatoes VegetablesVegetables Chickpea Salad with Coriander DressingTomato, diced Tablespoons Green curry paste Cups Sliced vegetables 440 g Cooking Rice by Auto Cook Å Cooking Rice by Micro powerRice, Pasta and Noodles APPROX. Time Amount To Cook Rice Standing ContainerRice Cooking Pasta by Micro powerPasta and Noodles APPROX. Time Amount To Cook Pasta Standing ContainerMinimum weight 150g / Maximum weight 500g Cooking Dried pasta by Auto Cook ÅAPPROX. Time Amount To Cook Noodles Container Boiling Cooking Dried Noodles by Micro powerCooking Fresh Noodles by Auto Cook Å InstructionCooking Cakes by Micro power Cooking Fruit by Micro PowerVariations Cakes, Desserts and Slices HintIcing To Melt Chocolate Mince Pies Caution Sauces and Extras Jars and BottlesSterilizing Jars Ingredients 40 g Cooking Sauces

NN-ST557W, NN-ST557M specifications

The Panasonic NN-ST557M and NN-ST557W are exemplary microwave ovens offering a blend of advanced technology and practical design, making them suitable for modern kitchens. Both models are noted for their stylish appearance, characterized by sleek finishes and intuitive interfaces, which enhance their usability in daily cooking tasks.

One of the key features of both models is the Inverter technology. This innovative system provides a continuous flow of cooking power, allowing for even heating and precise temperature control. Unlike traditional microwaves that cycle on and off, resulting in uneven cooking, the inverter technology ensures that food is cooked uniformly. This is particularly beneficial for delicate items like fish or sauce, which require gentle heating to avoid overcooking.

Another significant feature is the one-touch sensor cooking. This technology simplifies meal preparation by automatically adjusting cooking times and power levels based on the food's moisture levels. Whether you are reheating leftovers or cooking a full meal, this feature removes the guesswork, ensuring optimal results every time.

The NN-ST557M and NN-ST557W also boast a large capacity, accommodating larger dishes and satisfying family-sized meals. The spacious interior allows for the flexibility to prepare multiple portions at once, enhancing the convenience for busy users. Additionally, both models feature a user-friendly control panel, complete with tactile buttons and a digital display, making navigation straightforward.

Cleaning and maintenance are made easy with the non-stick interior and removable turntable. The easy-to-clean surfaces help to maintain hygiene and reduce the time spent on upkeep. Moreover, the compact size of the microwave allows for easy placement on countertops without taking up unnecessary space.

Both models come equipped with various preset cooking programs that cater to specific food types, further enhancing their versatility in the kitchen. From popcorn and baked potatoes to defrosting meat, these programmable settings offer convenience and reliability.

In summary, the Panasonic NN-ST557M and NN-ST557W microwave ovens are distinguished by their innovative inverter technology, user-friendly features, and spacious design. They represent an ideal choice for those seeking efficiency, precision, and style in their cooking routines. With these models, Panasonic continues to uphold its reputation for quality and performance in the consumer appliance market.
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