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5

Do not block the exhaust vents or air intake openings. Allow 
a few inches of space at the back and side of the microwave 
oven where the exhaust vents are located. Blocking the 
exhaust vents could cause damage to the microwave oven, 
as well as poor cooking results. 

Make sure the microwave oven legs are in place to ensure 
proper airflow. If vents are blocked, a sensitive thermal device 
may automatically turn the microwave oven off. The 
microwave oven should work properly once it has cooled.

Electrical Requirements

Observe all governing codes and ordinances.

Required:

A 120 Volt, 60 Hz, AC only, 15- or 20-amp electrical supply 
with a fuse or circuit breaker.

Recommended:

A time-delay fuse or time-delay circuit breaker.

A separate circuit serving only this microwave oven.

PARTS AND FEATURES

This manual may cover several different models. The model you 
have purchased may have some or all of the features shown here. 
The appearance of your particular model may differ slightly from 
the illustrations in this manual.

Turntable

The turntable can rotate in either direction to help cook food 
more evenly. For best cooking results, do not operate the 
microwave oven without having the turntable in place. See 
“Assistance or Service” to reorder any of the parts.

To Install:

1.

Place the support on the microwave oven cavity bottom.

2.

Place the turntable on the support.

Electrical Shock Hazard

Plug into a grounded 3 prong outlet.

Do not remove ground prong.

Do not use an adapter.

Do not use an extension cord.

Failure to follow these instructions can result in death, 
fire, or electrical shock.

WARNING

GROUNDING INSTRUCTIONS

SAVE THESE  INSTRUCTIONS

■  

For all cord connected appliances:

The microwave oven must be grounded. In the event of 
an electrical short circuit, grounding reduces the risk of 
electric shock by providing an escape wire for the electric 
current. The microwave oven is equipped with a cord 
having a grounding wire with a grounding plug. The plug 
must be plugged into an outlet that is properly installed 
and grounded.

WARNING:

 

Improper use of the grounding plug can 

result in a risk of electric shock. Consult a qualified 
electrician or serviceman if the grounding instructions are 
not completely understood, or if doubt exists as to whether 
the microwave oven is properly grounded. 

Do not use an extension cord. If the power supply cord is 
too short, have a qualified electrician or serviceman install 
an outlet near the microwave oven.

A. Door lock system
B. Metal shielded window

C. Model and serial number 

plate

D. Cooking guide Label

E. Microwave oven light

(not shown)

F. Control panel

G. Removable turntable support

H. Glass turntable

B

C

D

E

F

G

H

A

A. Turntable
B. Support

A

B

Summary of Contents for MT4078

Page 1: ...AVE OVEN Use CareGuide For questions about features operation performance parts accessories or service call 1 800 253 1301 or visit our website at www whirlpool com Table of Contents 2 W10178097A Model MT4078 ...

Page 2: ... WARRANTY 12 MICROWAVE OVEN SAFETY You can be killed or seriously injured if you don t immediately You can be killed or seriously injured if you don t follow All safety messages will tell you what the potential hazard is tell you how to reduce the chance of injury and tell you what can happen if the instructions are not followed Your safety and the safety of others are very important We have provi...

Page 3: ...it 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 Visible bubbling or boiling when the container is removed from the microwave oven is not always present THIS COULD RESULT IN VERY HOT LIQU...

Page 4: ...istance or Service section PRECAUTIONS TO AVOID POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGY a Do not attempt to operate this oven with the door open since open door operation can result in harmful exposure to microwave energy It is important not to defeat or tamper with the safety interlocks b Do not place any object between the oven front face and the door or allow soil or cleaner residue to ...

Page 5: ...ny of the parts To Install 1 Place the support on the microwave oven cavity bottom 2 Place the turntable on the support Electrical Shock Hazard Plug into a grounded 3 prong outlet Do not remove ground prong Do not use an adapter Do not use an extension cord Failure to follow these instructions can result in death fire or electrical shock WARNING GROUNDING INSTRUCTIONS SAVE THESE INSTRUCTIONS For a...

Page 6: ...he ADD MINUTE pad starts the microwave oven for 1 minute at 100 power More cook time may be added in 1 minute increments by touching ADD MINUTE repeatedly The Add Minute function may be used only when no other function is operating Clock This is a standard 12 hour clock 12 00 11 59 To Set The microwave oven must be off 1 Touch CLOCK SET 2 Touch number pads to enter correct time of day 3 Touch CLOC...

Page 7: ... may be used Plastic wrap should be turned back at one corner to provide an opening to vent steam Condensation on the door and cavity surfaces is normal during heavy cooking Stirring and Turning Stirring and turning redistribute heat evenly to avoid overcooking the outer edges of food Stir from outside to center If possible turn food over from bottom to top Arranging If heating irregularly shaped ...

Page 8: ...ar in the display and the end of cycle tones will sound 5 Touch OFF or open the door to clear the display The cook time and power may not be changed after touching START without interrupting cooking CookinginStages The microwave oven can be set to cook at different cooking powers for various lengths of time up to 3 stages plus a defrosting stage To Cook in Stages 1 Place food on the turntable and ...

Page 9: ... and a third time for the Fish setting 3 Enter the weight Weight can be set from 0 1 lb to 6 0 lbs 45 g to 2 7 kg 4 Touch START The display will count down the defrost time During defrosting 5 short tones will sound These tones indicate it is time to check turn rearrange or separate food Open door turn food if necessary close door and touch START to resume defrosting When the cycle ends END will a...

Page 10: ... not use chemical or abrasive cleansers TURNTABLE Replace turntable immediately after cleaning Do not operate the microwave oven without the turntable in place Mild cleanser and scouring pad Dishwasher TROUBLESHOOTING Try the solutions suggested here first in order to avoid the cost of an unnecessary service call Nothing will operate Has a household fuse blown or has a circuit breaker tripped Repl...

Page 11: ...lling please know the purchase date and the complete model and serial number of your appliance This information will help us to better respond to your request If you need replacement parts If you need to order replacement parts we recommend that you use only FSP replacement parts FSP replacement parts will fit right and work right because they are made with the same precision used to build every n...

Page 12: ...llation of your major appliance if it is installed in an inaccessible location or is not installed in accordance with published installation instructions 11 Major appliances with original model serial numbers that have been removed altered or cannot be easily determined This warranty is void if the factory applied serial number has been altered or removed from your major appliance The cost of repa...

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