Superior Products has a complete selection of commercial microwave ovens for the foodservice equipment industry. Below are some frequently asked questions about microwaves, and their applications. This is Part II of a 2 part posting.
1. What is stage cooking programming?
Stage cooking programming is a cooking sequence with specific power level and time changes. The user can program up three or four different power level changes and the specific amount of cooking time at each stage (depending on brand and model). Each power level/cooking time combination is a stage. Stage cooking is only available on electronic control models. Maximum cooking time is 60 minutes except when cooking with full power (100%). In case of full power (100%), maximum cooking time is 20 minutes. (May vary by brand/model) Some sensitive menu items preparation such as refrigerated casseroles with meat chunks, thick soups, lasagna may require multiple stages to heat product evenly throughout without overcooking. A typical 3-stage program might be 3 minutes high, then 2 minutes on medium high, then 3 minutes on medium. Other applications can include defrosting stage, moving on to heating stage.
2. Do you need variable power, and what are the five power levels on a variable power microwave?
The five power levels are: Hold, defrost, medium, medium-hi, and full power.
Some Amana models have a power level pad that allows you to program a cooking cycle for a specific power level like 100%,80%,60%, 40%, etc.
3. Can I defrost food in any microwave oven?
No- Make certain the oven includes a defrost cycle setting.
4. How many watts of power will I need for my menu?
Keep in mind that menus change, so it is better to have more power than not enough. Larger facilities may have multiple microwave ovens depending on requirements.
Sandwich Stations:
1,000 Watt: One sandwich at a time in a low volume operation
1,200 Watt: One sandwich at a time
1,700-1,800 Watt: Two or three sandwiches
2,200 Watt & up: Seven to ten sandwiches
Server Stations:
1,000 Watt: Small station
1,200 Watt: Larger Station (or 2 - 1,000 Watt depending on size of dining room)
Bars:
1,000 to 1,200 Watt: Sandwiches, Hors d'oeuvres, hot drinks, side orders
Banquet Kitchens:
1,700, 1,800 or 2,200 Watts & up: Baking potatoes, heating pre-baked potatoes, reheating or defrosting Au Gratin potatoes, defrosting, or reheating precooked vegetables, etc.
Cafeterias:
1,700, 1,800 or 2,200 Watts & up: Heating items like: Desserts, vegetables, bulk entrees for steam table support, hot sandwiches, etc.
Snack Bars:
1,000 to 1,200 Watt: Sandwiches, casseroles, desserts, defrosting entrees
Delicatessens:
1,000 to 1,200 Watt: For heating product for takeout, heating barbecued foods, etc.
Up to 2,200 Watt: For higher wattage applications of fast heating of delicate pastry products or reheating chicken, with high power for a very short time!
5. How is a Microwave/Convection Combination Oven different from a Microwave Oven?
A relatively new type of commercial kitchen equipment is combination microwave and convection ovens. These are typically for A LA CARTE preparation of foods that need the extra crisping of hot convected air. They will handle 1 to 4 servings at a time much faster than a convection only oven. Products such as poppers, chicken strips or nuggets, individual rising crust pizzas or fresh pizzas, calzones, hot pockets, burritos, toasted sandwiches, work well in these ovens. In most cases, they can operate these ovens without a hood (but consult the local health inspector before making a purchase based on a hood exemption as rules vary widely across the country.) These items are perfectly suited to add revenues from menu expansion adding hot food in places like bars, concession stands, golf courses, snack bars, movie theatres, or sandwich shops for toasted sandwiches where hot food is not currently available due to space or hood requirements. These ovens can be preprogrammed so unskilled operators can prepare hot foods without needing any special skills.
6. How do programmable pads work?
These pads can be set up for any required time, depending on the menu item.
7. What are some do's and don'ts of microwave ovens?
Do not overcook food.
Do not overheat the liquid Stir the liquid both before and half way through heating it.
Carefully attend oven when you place paper, plastic, or other combustible materials inside the oven to facilitate cooking.
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.
Do not use the cavity for storage.
Do not leave paper products, cooking utensils, or food in the cavity when not in use.
8. Is it true that you cannot use metal or foil in a microwave oven?
Never use restaurant food supplies with metal (such as aluminum pizza pans), gold edge china, aluminum foil, or leave silverware in a bowl or on a dish. This may cause fire or sparking inside the microwave oven. This may damage or destroy the microwave. Other bad materials include melamine and Corelle china, as these get very hot (too hot to touch) and may crack or craze.
9. What kinds of dishes work best in microwave ovens?
Use only microwave safe foodservice supplies products such as high temperature plastic pans.
To test to see if a dish or plate or container is microwave safe:
1) place it in the microwave with no food,
2) run microwave for 20 seconds,
3) if the piece is hot to touch, it is not microwave friendly.
4) If it is warm or preferably unchanged in temperature, it is a perfect for microwave use.
10. Where can I get some more information on microwaves?
Amana Light Duty Medium Duty Heavy Duty
11. What type of warranty do they have?
The warranties will vary some by model, usually on the parts, labor and travel portion of the warranty. Some of the lower priced models have only a one-year parts and labor warranty. How the customer takes care of the microwave on a regular basis will have an impact on how long the microwave lasts.
12. What are some preventative maintenance tips for Microwave ovens? 
Wipe up spills as they occur Do not allow food particles or grease to collect inside stirrer cover, on the light cover, inner door, or the area where the door closes.
Wipe entire interior clean daily with mild detergent solution on a dampened cloth or sponge, and then dry with a clean cloth.
Remove and clean the air intake filter per manufacturers instructions.