Whirlpool 721.663398 Precautions on Installation, Trial Operation, Features and Specifications

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2.PRECAUTIONS ON INSTALLATION

(Figure 2)

A.Plug the power supply cord into a 120 V AC, 60 Hz, single-phase power source with a capacity of at least 20 amperes.

B.Since the unit weights about 36.5 lbs, be sure to place it on a sturdy and flat surface.

C.Avoid placing the unit in a location where there is direct heat or splashing water.

D.Place the unit as far away as possible from TV, radio, etc. to prevent interference.

CAUTION

This unit is equipped with a 3-prong plug for your safety. If the wall outlet is a grounded 3-hole type, the unit will be grounded automatically.

Properly Polarized and

Grounded

Outlet

Three-Pronged(Grounding)

Plug

Figure 2

3. GENERAL PRECAUTIONS IN USE

A.Never operate the unit when it is empty. Operating the oven with no load may shorten the life of the magnetron. Whenever cooking dry foods (dried fish, bread, etc.) or a small amount of food, be sure to put a glass of water into the cooking compartment. The turntable tray may become hot after operating, be careful when touching it.

B.Aluminum foil should be avoided because it will disrupt cooking and may cause arcing. However, small pieces may be used to cover some parts of food to slow the cooking. Any aluminum foil used should never be closer than 2.5 cm to any side wall of the oven.

4. TRIAL OPERATION

After installation, the following sequences and results should be checked carefully.

A.Put a container filled with water (about 1 liter) into the oven, and close the door tightly.

B.Touch the STOP/CLEAR and the COOK TIME keys.

C.Set cooking time for 10 minutes by touching “1” and then “0” three times. “1000” appears in the display window.

D.Touch the START key.

Make sure the cavity light comes on. The unit will begin cooking and the display window will show the time counting down by seconds.

E.After about 5 minutes, make sure the primary interlock switch, the secondary interlock switch and the interlock monitor and oven lamp switch operate properly by opening and closing the door several times. Touch the START key each time the door is closed.

F.Continue operating the unit. Four long beep sound signal is heard when the time is up. The unit will shut off automatically.

G.Confirm the water is hot.

H.Finally, measure the output power according to “POWER OUTPUT MEASUREMENT” on page 12.

5. FEATURES AND SPECIFICATIONS

A.The safety systems incorporated in this model are:

(1)Primary interlock switch

(2)Secondary interlock switch

(3)Interlock monitor switch

(4)Choke system

(5)Thermostat

(Note: This thermostat located on the oven cavity will open and stop the unit from operation only if a high temperature is reached, such as, a fire created by overcooking food.)

B.Any one of 10 power output levels ranging 120W to 1200W can be selected by the touch control and electronic computer system.

C.Cooking time can be displayed on the digital readout.

D.Three different cooking stages can be set. The oven remembers three cooking stages and changes from one cooking stage to another. This is made possible with the memory function of the microprocessor.

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Contents Division Basic Field Manual For Microwave Oven Page Foreword Adjust the Latch and Switch Closing Adjustment ProceduresCheck the Door Latch and Switch Closing Test the Latch and Switch SequenceLatch Latch Board General Precautions in USE Precautions on InstallationFeatures and Specifications Trial OperationSpecifications Switch TableSchematic Diagram Overall Circuit Diagram Matrix Circuit for Touch KEY Board Operating Procedures A. Oven Control Panel Easy USE Table Measurement with the Outer Case Removed Procedure for Measuring Microwave Energy LeakageMeasuring Microwave Energy Leakage EquipmentPower Output Measurement Measurement with a Fully Assembled OvenRecord Keeping and Notification After Measurement Disassembly Instructions Important NotesDoor Assembly / Removal Magnetron Removal FAN Motor Assembly / Removal High Voltage Transformer Removal Removing SensorHigh Voltage Capacitor and Diode Removal Interlock System Interlock MechanismMonitor Switch Test Primary Interlock Switch TestSecondary Interlock Switch Test Components Test Procedure ResultsFilament Winding Primary Terminal Test and Checkout PROCEDURES, and TroubleshootingTest Procedures Components MagnetronHigh Voltage CapacitorDiode Level PowerRelay FAN MotorCheckout Procedures Checkout Procedures for Fuse BlowingProblems Causes Problem B Checkout Procedures for RelayProblem a YES GoodPage Trouble Shooting Condition Cause RemedyCondition CheckResult Fuse blows Condition Check Result Cause RemedyCondition Check Result Cause Remedy Check Result Exploded View Door Parts Controller Parts Oven Cavity Parts Latch Board Parts Interior Parts Base Plate Parts Sensor Parts No MFL30502909

721.663398 specifications

The Whirlpool 721.663398 is a versatile refrigerator designed to meet the demands of modern households while providing exceptional performance and energy efficiency. With its sleek design and innovative features, this model stands out in the realm of home appliances, offering both style and functionality.

One of the standout features of the Whirlpool 721.663398 is its spacious interior, which provides ample room for storing groceries and other food items. The refrigerator is designed with adjustable shelves that can be easily configured to accommodate various types of food and beverages, making it a practical choice for families of all sizes. Additionally, the inclusion of door bins adds to the organization, allowing for easy access to smaller items like condiments and snacks.

The refrigerator utilizes advanced cooling technology to maintain optimal temperature levels, ensuring that food remains fresh for longer periods. The adaptive cooling system responds dynamically to fluctuations in temperature, providing consistent cooling performance. This technology not only preserves food quality but also enhances energy efficiency, helping homeowners save on utility bills.

Another impressive characteristic of the Whirlpool 721.663398 is its energy-efficient design. This model is ENERGY STAR certified, meaning it meets strict energy efficiency guidelines set by the U.S. Environmental Protection Agency. Homeowners can enjoy peace of mind knowing that they are reducing their environmental footprint while benefiting from lower energy costs.

In terms of convenience, the Whirlpool 721.663398 features a modern ice maker that provides on-demand ice production, perfect for hosting gatherings or simply keeping drinks cool during hot summer days. The exterior water dispenser offers easy access to clean and filtered water, promoting hydration without the need for bottled alternatives.

The refrigerator is also designed with a user-friendly digital control panel that allows for easy temperature adjustments and settings. This intuitive interface makes managing the appliance straightforward, even for those who might not be tech-savvy.

Overall, the Whirlpool 721.663398 combines style, functionality, and energy efficiency into one cohesive appliance. Its spacious interior, advanced cooling technology, and convenient features make it an excellent choice for those seeking a reliable refrigerator that caters to the needs of modern living. Whether you're stocking up for a large family or hosting social gatherings, this refrigerator is well-equipped to handle it all.
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