Sharp R-21lcf Medium Duty Commercial Microwave User Manual

Sharp R-21LCF Medium Duty Commercial Microwave

IMPORTANT SAFETY INSTRUCTIONS

• Install or locate this appliance only in accordance with the provided installation instructions.
• Some products such as whole eggs and sealed containers – for example, closed glass jars – are able to explode and should not be heated in this oven.
• Use this appliance only for its intended use as described in this manual. Do not use corrosive chemicals or vapors in this appliance. This type of oven is specifically designed to heat, cook or dry food. It is not designed for industrial or laboratory use.
• As with any appliance, close supervision is necessary when used by children.
• Do not operate this appliance if it has a damaged cord or plug, if it is not working properly or if it has been damaged or dropped.
• This appliance should be serviced only by qualified service personnel. Contact nearest Sharp
• Authorized Servicer for examination, repair or adjustment.
• Do not cover or block any openings on the appliance.
• Do not store or use this appliance outdoors. Do not use this product near water – for example, near a kitchen sink, in a wet basement, near a swimming pool or similar locations.
• Do not use this appliance near the steamer or the fryer.
• Do not immerse cord or plug in water.
• Keep cord away from heated surfaces.
• Do not let cord hang over edge of table or counter.
• See door surface cleaning instructions on page 15.
• To reduce the risk of fire in the oven cavity:
• Do not overcook food. Carefully attend appliance when paper, plastic or other combustible materials are placed inside the oven to facilitate cooking.
• Remove wire twist-ties from paper or plastic bags before placing bag in oven.
• 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 purposes. Do not leave paper products, cooking utensils or food in the cavity when not in use.
• Liquids, such as water, coffee, or tea are able to be overheated beyond the boiling point without appearing to be boiling.
• Do not overheat the liquid.
• Stir the liquid both before and halfway through heating it.
• Do not use straight-sided containers with narrow necks. Use a wide-mouthed container.
• After heating, allow the container to stand in the microwave oven at least for 20 seconds before removing the container.
• Use extreme care when inserting a spoon or other utensil into the container

GROUNDING INSTRUCTIONS

This appliance must be grounded. This oven is equipped with a cord having a grounding wire with a grounding plug. It must be plugged into a wall receptacle that is properly installed and grounded in accordance with the National Electrical Code and local codes and ordinances. In the event of an electrical short circuit, grounding reduces risk of electric shock by providing an escape wire for the electric current.

Electrical Requirements
The electrical requirements are a 120 volt 60 Hz, AC only, 15 amp. or more protected electrical supply. It is recommended that a separate circuit serving only this appliance be provided. The oven is equipped with a 3-prong grounding plug. It must be plugged into a wall receptacle that is properly installed and grounded. Should you only have a 2-prong outlet, have a qualified electrician install a correct wall receptacle. A 3-prong adapter may be purchased and used temporarily if local codes allow. Follow package directions. A short power-supply cord is provided to reduce risk of becoming entangled in or tripping over a longer cord

Extension Cord If it is necessary to use an extension cord, use only a 3-wire extension cord that has a 3-blade grounding plug and a 3-slot receptacle that will accept the plug on the microwave oven. The marked rating of the extension cord should be AC 115-120 volt, 15 amp. or more. Be careful not to drape the cord over the countertop or table where it can be pulled on by children or tripped over accidentally

Radio or TV Interference Should there be any interference caused by the microwave oven to your radio or TV, check that the microwave oven is on a different electrical circuit, relocate the radio or TV as far away from the oven as feasible or check position and signal of receiving antenna.

INSTALLATION

Be sure all electrical requirements are met. See above. Air intake openings are on the back of the unit. Install the unit at least 2 inches (5.1 cm) away from the nearest wall to permit adequate ventilation for proper cooling and air flow in the oven. Install the unit where no excessive heat or steam are generated. Do not place next to an oven or cooking surface.  The unit may be secured to a countertop or stand. There is a screw hole in the bottom of the unit. After the oven is permanently placed, drill a hole through the counter top for a 3/16 inch (0.48 cm) self-tapping screw. The hole should be 1 inch (2.5 cm) from the left side of the outer case cabinet and 7-1/8 (20.1 cm) inches back from the front edge of the cavity face plate.

PART NAMES

MICROWAVE OVEN PARTS

1. Back splash cover
2. Side splash cover
3. Oven light
4. Ceramic shelf
5. Control panel
6. Cavity face plate
7. Door latch openings
8. Door latches
9. Door hinges
10. Door seals and sealing surfaces
11. Door handle
12. Oven door with see-through window
13. Air ventilation cover and openings
14. Power supply cord
15. Air intake openings
16. Outer case cabinet

CONTROL PANEL

1. Digital readout
2. DOUBLE QUANTITY pad
3. EXPRESS DEFROST pad
4. Ten number pads for time and memory programming
5. SELECTATIME pad
6. STOP/CLEAR pad; touch to stop operation of oven and clear remaining heating time
7. SELECTAPOWER pad for setting variable power level (R-21LTF only)
8. START pad; touch to operate oven after door is closed and time is set
9. SET pad for setting memory
10. CHECK pad for checking memory
11. SIGNAL pad for setting signal sound
12. Light Up Dial for setting cooking time

STEPS FOR OPERATING FOR , R-21LCF

• Place food on the ceramic shelf and close the door securely.
• Turn the Light Up Dial to the desired cooking time. Note that the light indicates the cooking time. Cooking will start immediately.
• The oven light and the cooling fan will be on throughout any cooking operation.
• When the Light Up Dial reaches “0” and the audible signal is heard, oven operation ceases, the light goes out and the fan stops
  

DEFROSTING FROZEN FOODS CHART

Cooking with memory
Suppose you want to cook by using memory 1, which was programmed for 10 seconds at 100%.

Cooking double quantity with memory
Double quantity means the best time for cooking two servings or twice the amount programmed in the memory pad; it is not double the time. Suppose you want to cook 2 servings by memory number 1.

Setting time and power level
Suppose you want to set 4 minutes at 60% for the 1st stage and 2 minutes at 30% for the 2nd stage for 1 serving in memory 1. 

Setting magnification factor
Ovens are shipped with a magnification factor of 1.7 for DOUBLE QUANTITY. You can change the magnification factor for double quantity and have it stored in the memory. Suppose you want to set the magnification factor to 1.67 for double quantity in memory

Memory check
You can check the information programmed into each memory.

Checking time and power level
Suppose you want to know the information programmed into memory 1, programmed for 4 minutes at 60% for the 1st stage and 2 minutes at 30% at the 2nd stage.

Checking magnification
Suppose you want to know the magnification factor for double quantity in memory 1.

MANUAL OPERATIONS

This model has 11 power levels. Use correct number pad after touching the SELECTAPOWER pad

Suppose you want to cook for 2 minutes and 30 seconds at 50%.

Express Defrost

Use Express Defrost to defrost meat and poultry faster and better. Calculate total defrost time from chart below. Express Defrost can be programmed for a maximum of 90 minutes. Suppose you want to defrost one pound of lamb chops for 2 minutes and 30 seconds.

Express Defrost Chart

Counter check
Set counter to “0” before using oven for the first time. See next column.

To clear the number of times
Each number of times can be cleared by touching SET pad during checking mode. Suppose you want to clear the times of memory 1.

SERVICE CALL CHECK

• Plug the power cord into a three-pronged electric-outlet. (See page 4)
• Place one cup of water in a glass measuring cup in the oven and close the door securely.

CARE AND CLEANING

Oven exterior
The outside of your oven can be easily cleaned with mild soap and water. Make sure to rinse thoroughly and dry the exterior with a soft towel.

Control panel
Care should be taken in cleaning the control panel. Open the door before cleaning to inactivate the control panel pads. Using a cloth dampened with water only, gently wipe the panel until it becomes clean. Avoid the use of excess water. Do not use any sort of chemical or abrasive cleaner. To do so may cause severe damage to the panel and make programming impossible.

Caution for R-21LCF:
Take care not to move the Light Up Dial from “0” during cleaning, or the oven will start as soon as you close the door

COOKING GUIDE

GLASS, GLASS-CERAMIC, CERAMIC AND CHINA UTENSILS
Most glass, glass ceramic, ceramic and china utensils are excellent for use in microwave ovens. Heatresistant glassware, unless it has metallic trim or metal portions, can almost always be used in the microwave oven, no matter whether it is clear or opaque. However, you must be careful not to use delicate glassware since it might crack from the heat of the food but not from the microwaves. Most dinner plates, unless they have metallic trim, are acceptable for heating foods. Utensils with metallic trim or metal parts, such as screws, bands, handles, etc. must be avoided. Cracked or crazed glazes or chips are also indications that a dish should not be used. Ceramic mugs or cups with glued on handles are also not recommended for use in a microwave oven.

PAPER GOODS
For low heat cooking, such as reheating or very short cooking times and for foods with low fat, sugar or water content, paper is a good utensil for microwave oven use. Napkins, towels, plates, cups, cartons, paper freezer wrap and the paper pulp board that some meats come packed in are also convenient utensils for use in the microwave oven. Cardboard can also be used. Paper is used in the microwave oven as a moisture insulator. Wax coated paper plates and cups should be avoided since the high temperatures that the foods reach may cause the wax to melt. Plastic coated dishes, however, are fine for use in the microwave oven. Wax paper and paper towels provide an excellent loose cover for foods and help prevent spatters. Do not use paper towels, plates or other utensils made from recycled paper. Recycled paper products may contain certain impurities which could cause the paper to ignite during microwave heating. Some paper products may contain harmful substances.

PLASTIC AND FOAM UTENSILS
Plastic and foam dishes and containers should not be used for cooking foods with high fat or high sugar content since the heat of the food is too hot for the plastic and may cause it to melt or lose its shape. Cooking pouches designed to withstand boiling and freezing for conventional cooking, work well in the microwave oven. Do not close plastic cooking pouches with the metal tie wraps provided, since they get very hot and will melt the plastic wrap. Any closed pouch or cooking container should be pierced so that steam is allowed to escape. Do not attempt to cook in plastic storage bags as they will not withstand the heat of the food. Plastic wrap may be used to cover foods during cooking. Stretch-type plastic wraps are not suitable for use in the microwave oven because they form too tight a seal. Whenever removing plastic wrap that has been tightly formed around the utensil, just lift the plastic away from you so that the steam can vent and there will be no danger of scalding. Melamine is not recommended for use in the microwave oven.

WICKER, WOOD AND STRAW
Wicker, wood and straw may be used in the oven for short periods of time; however, they should not be used for high fat or high sugar content foods since the heat of the food could possibly char the utensil. Wooden handle scrapers, spatulas and spoons may be left in the microwave oven during the cooking process.

Guidelines for microwave heating

Several factors should be kept in mind when selecting utensils to be used for microwave heating.

• A plate with a narrow rim of about 1/2-inch (1.3 cm) is recommended. This keeps the food all at the same level for more even, uniform heating.
• Casseroles and sauced items should be heated in straight sided containers.
• Containers should be chosen to be large enough to contain foods as they expand with heating. Milk products are especially subject to boil-overs.
•  Most foods heat better if they are covered. Covering retains the heat that has been created, reduces dehydration and helps keep the oven clean. There should be an opening for steam to escape from the food. Covers should also be non-metallic to allow for proper heating.

Techniques

• Microwave cooking is ideal for times when you run out of certain items or for preparation during slow periods.
• Avoid overcooking. Small portions of food should stand 2-3 minutes following cooking; during this standing time foods will complete cooking. Large portions require longer standing times.
• When a range of times is given in a recipe (2-3 minutes), always cook the shorter amount of time and check for doneness. Foods can always be returned to the microwave for additional cooking. Overcooked foods are tough or dry.
• Arrange foods with thicker portions or larger pieces toward the outside of the cooking container. Most foods cook more evenly and faster if covered.
• The microwave oven is quite useful in reducing broiling times for steaks and chops. Partially prepare the meat in microwave oven, then broil for a shorter period of time.
• Sliced meats should be at least 1/2-inch (1.3 cm) thick for best heating results. Turning the meat product over once during the heating process will yield more uniform heating.

Pastries

• Placing rolls or muffins on a paper towel or napkin or wrapping in a paper towel eliminates excess moisture and gives best results.
• Avoid overheating. Baked items will be hotter on the inside than on the outside. Overheating causes baked products to be dry and tough.

Breakfast Items

• Eggs should be slightly undercooked when preparing them for later reheating in the microwave. Cool quickly and store covered.
• Arrange foods on platter with easily heated items near center of plate (eggs) and denser items toward outside (sausage).
• Do not cook eggs in the shell. Pressure will build up inside the shell and it will burst. Do not reheat cooked eggs unless they are scrambled or chopped. Puncture the yolk before cooking eggs.

Sandwiches

• Pre-toast bread and cool on air rack. Egg and shortening rich bread gives best results.
• Sandwich meats should be sliced very thin. When assembling sandwich, place thicker portions toward outside edges.
• Cover sandwiches and refrigerate no longer than three hours. When ready to heat in the microwave, unwrap and place on paper towel or napkin. Most sandwiches should be heated uncovered unless wrapped in paper towel or napkin. The paper absorbs excess moisture, preventing the sandwich from becoming soggy.
• Avoid overheating. Filling heats rapidly, and overheated sandwiches become dry and tough

Casseroles

• Arrange casseroles with larger pieces or bulk of food around the perimeter of the casserole; depress in center.
• Casseroles should be heated covered with a non-metallic cover or plastic wrap except casserole with crusts. If tightly covered, puncture plastic wrap or loosen at one corner so steam can escape.
• Be careful when removing plastic wrap; pull wrap away from you with the tines of a fork.
• Cover casseroles evenly with sauce or gravy before refrigerating.

Vegetables

• Arrange vegetables with larger pieces around the perimeter of the dish; depress in center.
• Small uniform sized vegetables like peas, diced carrots and corn heat easily in the microwave oven.
• A butter sauce will speed the process.
• Heat vegetables covered with either a non-metallic cover or plastic wrap. If tightly covered, puncture plastic wrap or loosen at one corner so steam can escape. Be careful when removing plastic wrap; pull wrap away from you with the tines of a fork.
• Most vegetables should be slightly undercooked when preparing for later reheating in the microwave.
• Cool quickly and store covered.
• Microwaved vegetables retain their bright color, flavor and nutrients.

Defrosting

(For  R-21LCF)

• See page 7 for DEFROSTING FROZEN FOODS CHART

Heating and cooking time guide

Pastries, Rolls and Baked Goods

• 2 Biscuit 12 Heat, uncovered, from room temperature
• 1 Bun 8 Heat, uncovered, from room temperature
• 1 Danish Pastry 10 Heat, uncovered, from room temperature
• 1 Dinner, Roll 8 Heat, uncovered, from room temperature
• 1 Doughnut 10 Heat, uncovered, from room temperature
• 1 Muffin (small) 10 Heat, uncovered, from room temperature
• 1 slice Pie 30 Heat, uncovered, from refrigerated temp.
• 1 Sweet Roll 10 Heat, uncovered, from room temperature

Breakfast Items

• 8 oz. (225 g) French Toast & Bacon 70-80 Heat, uncovered, from refrig.
• 8 oz. (225 g) French Toast & Sausage 70-80 Heat, uncovered, from refrig.
• 6 oz. (170 g) Pancakes & Bacon 40-50 Heat, uncovered, from refrig.
• 6 oz. (170 g) Pancakes & Sausage 40-50 Heat, uncovered, from refrig.
• 5 oz. (140 g) Scrambled Eggs & Bacon 40-50 Heat, covered, from refrig.
• 5 oz. (140 g) Scrambled Eggs & Sausage 40-50 Heat, covered, from refrig.
• 4 strips Bacon 40-50 Heat, covered, from refrig.
• 4 links Sausage 40-50 Heat, covered, from refrig.

Sandwiches

• 4-5 oz. (115-140 g) Bacon & Tomato 30-40 Heat, uncovered, from refrig.
• 4-5 oz. (115-140 g) Beef Barbecue 30-40 Heat, uncovered, from refrig.
• 4-5 oz. (115-140 g) Burger 30-40 Heat, uncovered, from refrig.
• 4-5 oz. (115-140 g) Cheeseburger 40-50 Heat, uncovered, from refrig.
• 4-5 oz. (115-140 g) Corned Beef 40-50 Heat, uncovered, from refrig.
• 2 oz. (55 g) Frankfurter 20-30 Heat, uncovered, from refrig.
• 5 oz. (140 g) Jumbo Frankfurter 30-40 Heat, uncovered, from refrig.
• 31/2 oz. (100 g) Grilled Cheese 30-40 Heat, uncovered, from refrig.
• 4 oz. (115 g) Ham Sandwich 30-40 Heat, uncovered, from refrig.
• 4-5 oz. (115-140 g) Ham & Cheese 30-40 Heat, uncovered, from refrig.
• 5 oz. (140 g) Italian Sausage 40-50 Heat, uncovered, from refrig.
• 4-5 oz. (115-140 g) Pastrami 40-50 Heat, uncovered, from refrig.
• 4 oz. (115 g) Roast Beef 40-50 Heat, uncovered, from refrig.
• 4-5 oz. (115-140 g) Submarine/Hoagie 40-50 Heat, uncovered, from refrig.
• 5 oz. (140 g) Chili Burger 40-50 Heat, covered, from refrig.
• 4 oz. (115 g) Chili Dog 30-40 Heat, covered, from refrig.
• 4 oz. (115 g) Sloppy Joe 30-40 Heat, covered, from refrig.

Casseroles

• 8 oz. (225 g) Baked Beans 90-100 Heat, covered, from refrig. Stir after reheat.
• 8 oz. (225 g) Beef Burgundy 110-120 Heat, covered, from refrig. Stir after reheat.
• 8 oz. (225 g) Beef Goulash 90-100 Heat, covered, from refrig. Stir after reheat.
• 8 oz. (225 g) Beef Stew 110-120 Heat, covered, from refrig. Stir after reheat.
• 8 oz. (225 g) Beef Slices with Gravy 90-100 Heat, covered, from refrig.
• 8 oz. (225 g) Cabbage Rolls 100-110 Heat, covered, from refrig.
• 8 oz. (225 g) Chicken Fricassee 90-100 Heat, covered, from refrig.
• 8 oz. (225 g) Chicken a la King 90-100 Heat, covered, from refrig. Stir after reheat.
• 8 oz. (225 g) Chili Con Carne 90-100 Heat, covered, from refrig. Stir after reheat.
• 8 oz. (225 g) Creamed Chicken 90-100 Heat, covered, from refrig. Stir after reheat.
• 8 oz. (225 g) Lasagna 110-120 Heat, covered, from refrig.
• 8 oz. (225 g) Meat Loaf 110-120 Heat, covered, from refrig.
• 8 oz. (225 g) Macaroni (beef sauce) 90-100 Heat, covered, from refrig. Stir after reheat.

SPECIFICATIONS

USER GUIDE for R-21LCF

1. Set the Light Up Dial for the appropriate cooking time at 100% power.
2. The oven will start cooking immediately.
3. To stop the oven,open the door or turn the Light Up Dial to “0”.

WARRANTY

LIMITED WARRANTY
SHARP ELECTRONICS CORPORATION warrants to the first end-user purchaser that this Sharp brand product (the “Product”), when shipped in its original container and sold or distributed in the United States by Sharp or authorized Sharp distributor or reseller, will be free from defective workmanship and materials, and agrees that it will, at its option, either repair the defect or replace the defective Product or part thereof with a new or remanufactured equivalent at no charge to the purchaser for parts or labor for the period(s) set forth below. This warranty does not apply to any appearance items of the Product nor to the additional excluded item(s) set forth below nor to any Product the exterior of which has been damaged or defaced, which has been subjected to improper voltage or other misuse, abnormal service or handling, or which has been altered or modified in design or construction. This warranty does not apply if the commercial microwave oven is not operated and maintained according to the instructions attached. In order to enforce the rights under this limited warranty, the purchaser should follow the steps set forth below and provide proof of purchase to the servicer. To the extent permitted by applicable state law, the warranties set forth herein are in lieu of, and exclusive of, all other warranties, express or implied. Specifically,

ALL OTHER WARRANTIES OTHER THAN THOSE SET FORTH ABOVE ARE EXCLUDED. ALL EXPRESS AND IMPLIED WARRANTIES INCLUDING THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR USE, AND FITNESS FOR A PARTICULAR PURPOSE ARE SPECIFICALLY EXCLUDED.

If, under applicable state law, implied warranties may not validly be disclaimed or excluded, the duration of such implied warranties is limited to the period(s) from the date of purchase set forth below. This limited warranty gives your specific legal rights, and you may also have other rights which vary from state to state. Neither the sales personnel of the seller nor any other person is authorized to make any warranties other than those described herein, or to extend the duration of any warranties beyond the time period described herein on behalf of Sharp. The warranties described above shall be the sole and exclusive warranties granted by Sharp and product repair or replacement shall be the sole and exclusive remedy available to the purchaser. Correction of defects, in the manner and for the period of time described herein, shall constitute complete fulfillment of all liabilities and responsibilities of Sharp to the purchaser with respect to the Product, and shall constitute full satisfaction of all claims, whether based on contract, negligence, and strict liability or otherwise. In no event shall Sharp be liable, or in any way responsible, for any damages or defects in the Product which were caused by repairs or attempted repairs performed by anyone other than an authorized servicer. Nor shall Sharp be liable or in any way responsible for any incidental or consequential economic or property damage. Some states do not allow limits on warranties or on remedies for breach in certain transactions; in such states, the limits herein may not apply.

Your Product Model Number & Description
R-21LCF Commercial Microwave Oven (Be sure to have this information available when you need service for your oven.)

Warranty Period for this Product (Effective April 1, 2017)

 R-21LCF:
One (1) year parts and labor. With respect to the magnetron, the warranty is for two (2) additional years on the part only. Expenses such as labor and travel shall be borne by the end user.

For product installed in correctional facilities R-21LCFS):
One (1) year parts and labor. With respect to the magnetron, the warranty is for two (2) additional years on the part only. Expenses such as labor and travel shall be borne by the end user.

Additional Item(s) Excluded from Warranty Coverage (if any):
Cosmetics, non-functional accessories, AC cord and light bulb.

Need Service?:
Contact Sharp at 1-877-427-7696. Be sure to have Proof of Purchase available

FAQS

Is this 12 inches deep or 16
The full dimensions are 20.5″ L to R, 12.125″ tall, and 16″ deep.

What’s the warrentey ?? How long ?? What does it cover??
Can’t remember. Had mine for 3 years and still going strong.

What are dimensions of unit and opening identofied by Height, Length & Depth?
13″ x 13″ x 7-7/8″high

Does it have a turntable?
No turntable on this microwave.

I ordered plugged it in no power ! waited 4 days to get then amazon said another week?
This microwave is different from any I have ever had – plug it in and nothing happens! Per the instructions the light which Norma one on when you open the door does

What is ANSI certified?
UL, NSF, DHHS, FCC compliant but I don’t see mention of ANSI in owner’s manual.

What is the difference to model sharp r-21lcf?
All below answers are partial. The LCF hasn’t been manufactured since 2017. It was replaced with the LCFS

Can this microwave do “air popped” popcorn (e.g. in a silicone bowl)?
There is no turntable but I have never had an issue with uneven cooking.

How much standby power does the Sharp-R-21lcfs draw?
Without having done a test If this question referred to one of the models with a dial control, the answer is negligable

Does this microwave has a defrost mode?
No, the controls are very simple. There are no modes to change the power output. There is simply a dial to set how long the oven cooks, up to 6 minutes.

After the microwave is done heating up the food, does the fan stay on for about a minute before turning off?
The fan always turns off when the timer has finished. Make sure the rear of the oven has enough room to vent to avoid overheating of the unit.

Is this model NSF approved?
Doing a web search for the Sharp R-21LCFS and landing at the SharpUSA site

I notice it has no turn table so do you have to keep stopping to rotate the food?
No you don’t. In commercial microwaves there is a motor that creates circulation in the compartment so you don’t need the turn table.

Is this unit anti certified for sanitation?
Yes, is this unit anti certified for sanitation

How much grip strength is needed to unlatch and open the door. I am just wondering if my 92 year old mother could easily do it.
Easy. I’m 79 and have arthritis in both hands. Because shape of handle it’s almost like shaking someone’s hand.