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 I of a 2 part posting. Tomorrow we will post Part II.
1. What is the correlation between wattage and cooking times; how will the cooking time vary on a 1,000-Watt, 1,200-Watt, and 2,000-Watt microwave oven?
The higher the wattage, the faster the microwave oven cooks. Speed directly correlates with cook time. Something that takes 1 minute in a 1000-Watt oven will take 30 seconds in a 2000-Watt oven.
2. What are the three most important details in ordering a microwave oven to ensure the most appropriate kitchen cooking equipment for my application?
Determining the proper wattage microwave best for the operation.
Verify the voltage in the area where you want to plug in the microwave.
Watch the voltage and amps draw required for the microwave.
3. With microwaves being available in different wattages, what electrical details should be considered?
Since microwave ovens are available in different wattages, they also have different voltages and amperage draws. Some models are 120 volts, while other larger models are 208-240 volts. The 120 volt models will have a 15 or 20 amp plug and the 208-240 volt models will have a 20 or 30 amp plug.
4. How much space do I need to allow around the microwave oven?
This may vary by model, but allow at least 4 inches of clearance around the top and sides of the microwave oven. Proper airflow around the oven cools the electrical components. With restricted airflow, the oven may not operate properly, and reduce the life of electrical parts. Read owners manual before installing! Allow at least 4 inches between air discharge on back of oven and back wall. Do not install microwave oven next to or above source of heat, such as pizza brick oven or electric or gas deep fryer, or other commercial kitchen equipment.
5. Can I use a domestic microwave oven in a commercial kitchen?
Domestic microwaves are for residential use and not commercial use. They do not have NSF approval; your local health inspector can cite you for a code violation for using a domestic model in a commercial kitchen. Check your fire insurance policy, as some policies will not pay if domestic equipment is in use.
6. What are some of the differences between domestic and commercial microwaves? Why would a food service operator purchase a commercial brand microwave for $300.00 and up, when you can find a consumer brand microwave oven in warehouse clubs for under $100.00?
Commercial ovens are certified to NSF or UL Sanitation. Commercial models are more durably built, with heavy-duty power cords, and components that will hold up for continual heavy-duty use throughout the day. If a household unit is in use in a commercial environment, it can void the warranty. In the case of a fire, fire insurance can be voided if a consumer piece of equipment is being used in a commercial application.
7. What are the differences between Programmable and Variable Power features?
Programmable: This means that you can preset the buttons for specific applications.
Variable Power: This means that you have 3-6 power levels, like defrost, low, medium, medium-hi, and high cook the products). Variable power control cycles the oven on and off. Medium power level = 50%. This means that the magnetron turns on and off in equal parts, usually six seconds on then six seconds off. Defrost = 30% and means the magnetron will be cycling on 30% of the time and off 70% of the time.
8. Which is best: dial microwave or programmable microwaves?
This depends on your menu. Operators that use microwaves to preheat standard portions continually throughout the day will be better off with programmable ovens, with one button programmed for each menu item. This means consistent results delivered to the customer every time. A dial timer is for occasional use with a variety of items. Because of lower cost, they are sometimes used in self-service applications like cafeterias or convenience stores. The customers can then select their own heat time.
9. Can I steam with a microwave oven?
Microwaves are excellent steamers. With a higher wattage microwave you are able steam products without the added expenses of any plumbing costs. Quality products emerge in a samll amount of time; vegetables such as broccoli, cauliflower, corn and green beans are crisp, yet tender, with a bright, appetizing color. Always cover food that you are steaming in a microwave. For bulk steaming, use restaurant cooking supplies such as high temperature amber half size pans with steamer inserts and covers.
10. Can fish or shellfish be cooked in a microwave?
The following fish and seafood items can be successfully prepared in a microwave oven:
Fish: Trout (brook or rainbow), Salmon steaks, Filet of Sole, Halibut, Pike, Whitefish, Flounder, Red Snapper, Pompano, Ocean Perch/Lake Bass,and Bass (Lake Bass or Sea Bass).
Shellfish: Whole, live or frozen Lobster, Langoustines or Crayfish, Lobster Tails, and Crabs. Shrimp, crab, lobster and other seafood emerge perfectly steamed and piping hot.
Many consider microwave cooking of fish and seafood better than conventional cooking because conventional cooking often produces dehydration and toughening of the product, while microwave cooking of fish and seafood utilizes their natural moisture.