MSU23 - Microwave HITACHI - Free user manual and instructions

Product Type	Microwave (Countertop)
Brand	Hitachi
Model	MSU23
Capacity	23 Liters
Dimensions (W x D x H)	485 x 380 x 290 mm
Net Weight	12.5 kg
Power Supply	230V ~ 50Hz
Power Consumption	1200 W
Microwave Power Output	800 W
Frequency	2450 MHz
Number of Power Levels	10
Functions	Defrost, Auto Cook, Quick Start, Timer
Control Type	Digital Touch & Rotary Knob
Display	LED Digital Display
Cavity Material	Stainless Steel / Enamel (estimated)
Turntable	Glass Turntable (diameter 270 mm)
Child Safety Lock	Yes
Cleaning	Wipe interior with damp cloth; mild detergent for exterior
User Manual	Available in PDF (17 pages, English)
Repairability	Spare parts and service via authorized Hitachi centers

Frequently Asked Questions - MSU23 HITACHI

Can I use metal containers in the Hitachi MSU23 microwave?

No, metal containers should not be used as they can cause sparks and damage the microwave. Use microwave-safe glass, ceramic, or plastic containers.

How do I defrost food using the defrost function?

Select the Defrost function on the control panel, enter the food weight in grams, and press Start. The microwave automatically adjusts power and time for even thawing.

What is the correct way to clean the microwave?

Unplug the microwave first. Wipe the interior with a damp cloth and mild soap. Avoid abrasive cleaners. Clean the turntable and roller ring separately with warm soapy water.

Why does my microwave make a buzzing noise?

A low humming sound is normal due to the magnetron and cooling fan. If loud or unusual, check the turntable and ensure it is properly aligned. Contact service if persistent.

Can I operate the microwave without the turntable?

No, the turntable is essential for even cooking. The microwave may not function properly or could be damaged if used without it.

How do I set the timer for manual cooking?

Press the Time Cook button, use the dial to enter the desired cooking time, then select the power level if needed, and press Start.

What should I do if the microwave does not start?

Check the power cord is securely plugged in, the door is fully closed, and the timer is set. If it still doesn't start, press the Stop/Clear button and try again.

Is the Hitachi MSU23 equipped with a child lock?

Yes, to activate the child lock, press and hold the Stop/Clear button for 3 seconds until a sound indication appears. To unlock, repeat the same step.

What is the recommended clearance for installation?

Leave at least 10 cm of space above the microwave, 10 cm at the back, and 5 cm on each side for proper ventilation. Do not block the air vents.

Can I use the microwave to crisp or grill food?

This model is a standard microwave without grill or convection function. It is suitable for reheating, defrosting, and cooking using microwave energy only.

USER MANUAL MSU23 HITACHI

HITACHI Inspire the Next

Model name

MSU23

Exterior view of a Hitachi microwave oven (no signage or text beyond branding)

IMPORTANT:

Read the safety instructions and precautions carefully before using the microwave oven.

Keep all documents relating to the microwave oven in a safe place.

Contents

Safety Precautions.... 2

Important Safety Instructions.... 3

Do's And Don'ts.... 4

Other helpful instructions.... 6

Cleaning and Care....7

Setting up Your Oven....8

Countertop Installation.... 9

Installation....9

Operation....10

Trouble shooting.... 11

Questions and Answers.... 12

Containers....13

Technical Specifications.... 14

SAFETY PRECAUTIONS

Please read the following precautions to prevent microwave leakage

PRECAUTIONS WHEN USING YOUR MICROWAVE OVEN

Because the door on your microwave oven has been carefully designed to contain the microwave energy, the precautions below are important

1. Do not tamper with or attempt to defeat the safety interlocks which are operated by the door mechanism, or to make any irregular attempt to cause the appliance to operate with the door open
2. Do not place any object between the oven front face and the door or allow dirt or cleaner residue to accumulate on sealing surfaces

3. Do not operate the oven if it is damaged until it has been repaired by a fully qualified service technician. It is particularly important that the door closes properly and that there is no damage to the:
   (a) Door (bent)
   (b) Hinges and latches (broken or loosened)
   (c) Door seals and door seal areas (broken or cracked)

4. It is dangerous for this oven to be adjusted or repaired by anyone other than a properly qualified and trained service technician

5. Do not operate the oven empty. The appliance should not be operated without food in the oven, operation in this manner is likely to damage the appliance

IMPORTANT SAFETY INSTRUCTIONS

• Microwave heating of beverages can result in delayed eruptive boiling, therefore care must be taken when handling the container.
• The contents of feeding bottles and baby food jars shall be stirred or shaken and the temperature checked before consumption, in order to avoid burns
• This microwave oven is designed for freestanding use only and must not be placed in a built-in cabinet.

IMPORTANT SAFETY INSTRUCTIONS

When using electrical appliances basic safety precautions should be followed, including the following:

WARNING – To reduce the risk of burns, electric shock, fire, injury to persons or exposure to excessive microwave energy

1. Read all instructions before using the appliance
2. Read and follow the specific 'Safety Precautions' found on page 2
3. This appliance must be earthed. Connect only to properly earthed outlet
4. Install or locate this appliance in accordance with the provided installation instructions
5. Some products such as whole eggs and sealed containers – for example, closed glass jars, narrow necked containers – may explode and should not be heated in this oven
6. Use this appliance only for its intended use as described in this manual
7. As with any appliance, close supervision is necessary when used by children
8. 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
9. This appliance should be serviced by a fully trained technician Contact nearest authorised service facility for examination, repair or adjustment
10. Do not cover or block any openings on the appliance
11. Do not use outdoors
12. Do not immerse cord or plug in water
13. Keep cord away from heated surfaces
14. Do not let cord hang over the edge of a table or counter
15. Use only mild non-abrasive soaps or detergents applied with a sponge or soft cloth when cleaning surfaces of door and oven. See 'CLEANING AND CARE' of your microwave oven on page 7
16. To reduce the risk of fire in the oven cavity
    (a) Do not overcook food. Carefully attend appliance if paper, plastic, or other combustible materials are placed inside the oven to facilitate cooking
    (b) Do not use recycled kitchen paper as it may contain metal particles
    (c) Remove wire twist-ties from paper or plastic bags before placing bags in the oven
    (d) If materials inside the oven should ignite, keep oven door closed, turn off oven and disconnect the power cord, or shut off power at the fuse or circuit breaker panel
17. Microwave heating of beverages can result in delayed eruptive boiling, therefore care must be taken when handling the container.
18. The contents of feeding bottles and baby food jars shall be stirred or shaken and the temperature checked before consumption, in order to avoid burns.
19. This microwave oven is designed for freestanding use only and must not be placed in a built-in cabinet.

SAVE THESE INSTRUCTIONS

ELECTRICAL CONNECTION

For your safety please read the following information

Warning: This appliance must be earthed.

The appliance must be connected to a 220-240 volts 50 cycle AC supply by means of a three pin socket, suitably earthed and should be protected by a 13 amp fuse in the plug or a15 amp fuse in the consumer unit.

The appliance is supplied with a rewireable 13 amp 3 pin plug fitted with a 13 amp fuse. Should the fuse require replacement, it must be replaced with a fuse rated at 13 amp and approved to BS1362.

If the mains plug is unsuitable for the socket outlet in your home or is removed for any other reason, then the cut off plug should be disposed of safely to prevent the hazard of electric shock.

There is a danger of electric shock if the cut off plug is inserted into any 13 amp socket outlet.

How to wire a 13 amp plug.

Important

The wires in the mains lead on this appliance are coloured in accordance with the following code:

Green and Yellow - Earth

Blue *Neutral

Brown *Live

As the colours may not correspond with the markings identifying the terminals in your plug proceed as follows.

The green and yellow wire must be connected to the terminal in the plug which is marked with the letter E or with the earth symbol 12 or coloured green and yellow.

The blue wire must be connected to the terminal marked N or coloured black.

The brown wire must be connected to the terminal marked L or coloured red.

DO'S AND DON'TS

To use the microwave oven safely, be sure to observe the following rules

Do not remove the cabinetThe cabinet contains high voltage wiring, and it is dangerous

Do not insert anything in to the holes of the safety catches, air outlets, air inlets, the small holes inside the oven, or the holes at the rear of the applianceThe insertion may cause not only the failure of the switches and internal parts but there is also the danger of an electric shock

Do not run the microwave oven when the turntable is emptyThe door, turntable, and other roller ring will be overheated and the life of the magnetron, an important part of the microwave oven, will be shortened

Do not cover the air outlets or inlets on the cabinet, nor place anything on the cabinetThe microwave oven may be damaged because the internal parts cannot be cooled sufficiently. Also, the item placed on the cabinet may be overheated and become dangerous

Do not boil eggs in the microwave ovenThe eggs will explode because of the build up of pressure within the shell. When cooking poached or baked eggs, pierce egg yolk with a pointed knife

If the microwave oven is out of order or damaged, do not try to repair it by yourself. Contact the nearest fully trained, qualified service technician

COOKING UTENSILS

Utensils should be checked to ensure that they are suitable for use in the microwave oven.

The following chart summarises the proper use of cooking utensils in your oven.

Cooking utensils

Microwave

Heat resistant glass, glass ceramic		Yes
Ceramic, china	Yes
Metal cookware	No
Non resistance glass	No
Microwave plastic	Yes
Plastic wrap	Yes
Paper (cup, plates, towels)	Yes
Straw, wicker and wood		No

Microwave

1. Most glass, glass ceramic, and heat resistant glassware utensils are excellent. Those with metal trim should not be used in a microwave oven.
2. Paper napkins, towels, plates, cups, cartons and cardboard can be used in the microwave oven. Do not use recycled paper products since they may contain impurities which may cause sparks and / or fires when used in cooking.
3. Plastic dishes, cups, freezer bags, and plastic wraps may be used in the microwave oven. Follow the manufacturers instructions or the information given in a microwave cookbook when using plastics in the microwave oven.
4. Metal utensils and utensils with metallic trim should not be used in the microwave oven.

If the use of aluminium foil, skewers, or utensils containing metal in the oven is specified in the recipe, allow at least 2.5 cm clearance between the metal object and the interior oven wall. If arcing (sparks) occurs, remove immediately.

Notes:

• Care should be taken when removing utensils or the glass turntable, as they may become hot during cooking
• Only use a thermometer that is designed or recommended for use in the microwave oven.
• Ensure the turntable is in place when you operate the oven.

OTHER HELPFUL INSTRUCTIONS

For best results and more enjoyable cooking, please read these comments thoroughly.

For Best Results:

1. When determining the time for a particular food, begin by using short times and checking the cooking process frequently. It is easy to overcook food because microwaves cook very quickly.
2. Small quantities of food, or foods with low water content may dry out and become hard if cooked too long.

Defrosting Frozen Food:

1. Foods that have been frozen can be placed directly in the oven for thawing. (Be certain to remove any metallic ties or wraps).
2. Defrost according to the Defrosting Tips found in this manual.
3. For areas of the food thawing faster than others, cover with small pieces of aluminium foil.

This helps slow down or stop the defrosting process in the covered areas.

1. Some foods should not be completely thawed before cooking. For example, fish cooks so quickly that it is sometimes better to begin cooking while still slightly frozen.
2. It may be necessary to increase or decrease the cooking time in some recipes, depending on the starting temperature of the food.

NOTE:

Air from the vent may become warm during cooking.

Browning:

There are a few foods which are not cooked long enough in the microwave oven to brown and may need additional colour.

Coatings such as paprika, and browning agents such as Worcestershire sauce may be used on chops, meat patties or chicken pieces.

Roasts, poultry or ham, cooked for 10-15 minutes or longer, will brown without extra additives when cooking in combination mode.

CLEANING AND CARE

• It is important that the oven is cleaned frequently to avoid food splashes from becoming 'baked on'
• Clean the microwave oven after turning off the power and pulling out the plug

Oven(Ceiling, walls, bottom, and inside of door)	Each time food has been cooked, wipe off the dirt or food splashes as soon as possibleGreasy spots should be wiped off with a cloth soaked in mild detergentIf dirt is left in the oven for a long time, it cannot be wiped off easily, it will hold the smell of the food and may cause corrosion or rustingAlso arcing may occur and the side cover may be scorched because the microwaves are concentrated on the food splashesIf the side cover becomes too dirty to be cleaned, consult your nearest store and replace itCheck the microwave oven for any visible damage, such as a misaligned door, damaged door seals around the door or dents inside the oven cavity or on the door. Ensure that the door and door sealing areas are clean before use, clean with a mild detergent, water and a soft cloth. Do not use scouring pads, powder or other abrasive materials
Roller Ring	Always keep the roller ring cleanWhen it is soiled with food splashes or grease, remove the food splashes or grease using a sponge or cloth soaked with mild detergent and wash it in waterIf food splashes are left on the roller ring, arcing may occur because the microwaves are concentrated on the food splashesKeep the roller ring in position in the oven except when it is to be cleaned
Turntable	When the turntable is soiled with grease or food splashes, remove the dirt with a sponge soaked in mild detergent, wash it in water and dry it
Cabinet	Wipe the cabinet with a soft clothWhen the cabinet is heavily soiled, wipe it with a cloth soaked in mild detergent thoroughly with a clean damp clothDo not splash water on the air outlets
CAUTIONS	Do not rub the oven and accessories with a wire brush or sharp-edged tool	Do not apply oven cleaner, benzene, or thinner to the surface of the panel or door
	The surface may become scratched	The letters on the panel may fade, and the surface may lose gloss or may corrode

SETTING UP YOUR OVEN

Names of Oven Parts and Accessories

Remove the oven and all materials from the carton and oven cavity.

Your oven comes with the following accessories:

Glass tray 1

Turntable ring assembly 1

Instruction Manual 1

A) Control panel
B) Turntable shaft
C) Turntable ring assembly
D) Glass tray
E) Observation window
F) Door assembly
G) Safety interlock system

Turntable Installation

Hub (underside)

Turntable ring assembly

a. Never place the glass tray upside down. The glass tray should never be restricted.
b. Both glass tray and turntable ring assembly must always be used during cooking.
c. All food and containers of food are always placed on the glass tray for cooking.
d. If glass tray or turntable ring assembly cracks or breaks, contact your nearest authorized service center.

Countertop Installation

Remove all packing material and accessories. Examine the oven for any damage such as dents or broken door. Do not install if oven is damaged.

Cabinet: Remove any protective film found on the microwave oven cabinet surface.

Do not remove the light brown Mica cover that is attached to the oven cavity to protect the magnetron.

INSTALLATION

Remove all the packaging from the oven and check for any damage, for example, deformation or breakage of the door, gaps around the door or dents on the cabinet or door.

Should any damage be found, do not use the microwave oven but contact a fully qualified service agent. The servicemen will check the damage and repair the oven if necessary.

PLACE OF INSTALLATIONPlace the microwave oven on a level and sturdy surfaceIf the surface is not level the door may not open automatically	Do not place the microwave oven near a gas appliance which produces heat or steam or near the sink where the water may splash on it Heat, steam or water may cause parts failure and damage
Allow an ample space between the microwave oven and wallThe wall may be soiled with the excess steam mist from the air outlets at the rear. Do not place the microwave ovennear a curtain. Allow a space of 30cm or more from the top surface, 7.5cm either side, and a minimum of 7.5cm at the rear for ventilation during cooking of the microwave oven.	Place the microwave oven more than three metres away from radios, TVs and antenna linesThe microwave oven may cause noise interference or distort the picture
Air inlets and air outlets should be kept free at all times to allow for ventilation.	Do not place the power cored across the oven or against a hot surface.

OPERATION

Control Panel and Features

Operation Instructions

1. To set cooking power by turning the power knob to desired level.
2. To set the time of cooking by turning the timer knob to desired time per your food cooking guide.
3. The microwave oven will automatically start cooking after power level and time are set.
4. After the cooking time is up, the unit will "Dong" to stop.
5. If the unit is not in use, always set time to "0".

Function/Power	Output	Application
140	17% micro.	Soften ice cream
	33% micro.	Soup stew, soften butter or defrost
440	55% micro.	Stew, fish
610	77% micro.	Rice, fish, chicken, ground meat
800	100% micro.	Reheat, milk, boil water, vegetables, beverage

Notice: When removing food from the oven, please ensure that the oven power is switched off by turning the timer switch to 0 (zero).

Failure to do so, and operating the microwave oven without food in it, can result in overheating and damage to the magnetron.

Trouble shooting

Normal
Microwave oven interfering TV reception	Radio and TV reception may be effected when microwave oven operating. It is similar to the interference of small electrical appliances, like mixer, vacuum cleaner, and electric fan. It is normal.
Dim oven light	In low power microwave cooking, oven light may become dim. It is normal.
Steam accumulating on door, hot air out of vents	In cooking, steam may come out of food. Most will escape from vents. But some may accumulate on cool places like the oven door. It is normal.
Oven started accidentally with no food in.	It is forbidden to run the unit without any food inside. This may cause damage to the oven.

Trouble Possible Cause Remedy
Oven can not be started.	(1) Power cord not plugged in tightly.	Unplug. Then plug again after 10 seconds.
	(2) Fuse blowing or circuit breaker works.	Replace fuse or reset circuit breaker (repaired by professional personnel)
	(3) Trouble with outlet.	Test outlet with other electrical appliances.
Oven does not heat.	(4) Door not closed properly.	Close door properly.
Glass turntable makes noise when microwave oven operates	(5) Dirty roller rest and oven bottom.	Refer to "Maintenance of Microwave" to clean dirty parts.

QUESTIONS AND ANSWERS

Q. What is wrong when the oven light will not glow?

A. *Light bulb has blown.

* Door not closed.

Q. Why is steam coming out of the air exhaust vent and / or why is water dripping from the bottom of the door?

A. Steam is normally produced during cooking operations. This microwave oven has been made to vent this steam out of the side and top vents, occasionally this steam condenses on the door and water then drips out at the bottom of the door. This is quite normal and safe.

Q. Does microwave energy pass through the viewing screen in the door?

A. No. The metal screen reflects the energy to the oven cavity. the holes, or ports are made to allow light to pass, they do not let microwave energy through.

Q. Will the microwave oven be damaged if it operates while empty?

A. Yes. Never run it empty.

Q. Why do eggs sometimes pop?

A. When baking or poaching eggs, the yolk may pop due to steam build-up inside the yolk membrane. To prevent this, simply pierce the yolk with a toothpick before cooking. Never cook eggs without piercing their shells.

Q. Why is standing time recommended after the cooking operation has been completed?

A. Standing time is very important.

With microwave cooking, the heat is in the food, not in the oven. Many foods build up enough internal heat to allow the cooking process to continue, even after the food is removed from the oven. Standing time for joints of meat, large vegetables and cakes is to allow the inside to cook completely, without overcooking the outside.

Q. Why does my oven not always cook as fast as the microwave cooking guide says?

A. Check your cooking guide again, to make sure you've followed directions exactly and to see what might cause variations in cooking times. Cooking guide times and heat settings are suggestions, to help prevent over cooking the most common problem in getting used to a microwave oven. Variations in the size, shape and weights and dimensions could require longer cooking time. Use your own judgement along with the cooking guide suggestions to check whether the food has been properly cooked just as you would do with a conventional cooker.

Q. Why do sparks and crackling (arcing) occur in the oven?

A. There may be several reasons why sparks and crackling (arcing) within the cavity happens.

* You have left a fork or other metal utensils in the oven.

* You are using dishes with metal parts or trim (silver or gold).

* You are using a large amount of metal foil.

* You are using a metal twist tie.

CONTAINERS

Container Type Explanation Microwave
Heat resisting glassware	Glass containers with high heat-resisting properties such as Pyrex and Corning are the most suitable for the microwave oven	YES
Normal glassware	Glass containers that may be broken easily by the sudden increase of temperature should be used carefullyTable glassware can be used for drinks, fruits, and sweetsLead crystal is unsuitableNOTE: Do not use plates or receptacles made of coloured glass or ones having metallic decorations, since these can be damaged	YES
Heat resisting ceramic ware	Ceramic ware and glazed earthenware are suitable	YES
Normal ceramic ware	Containers having cracks, scratches or metal brims cannot be used	YES
Polypropylene containers	Polypropylene containers can be used if the temperature of the food does not exceed 100C	YES
Other containers	Melamine, styrol, and urea resin containers absorb the micro waves and easily become hot or are weak against heat	NO
Metal ware, iron skewers, wire nets etc	Since the micro waves cannot pass through these items, they cannot be used for microwave cookingMetal skewers and aluminium foil may be used partially for some types of cooking, but they must not touch the walls of the oven	NO
Plastic films	Plastic films that can resist temperature of 120C or higher can be used if the temperature of the food is not estimated to exceed 100CNote, however, that plastic film is not suitable for wrapping meat or foods with a high or fat or sugar content as it may melt when heated	YES
Bamboo ware, wooden ware etc	These containers may burn if they are heated for a long time (They can be used for microwave cooking for a short time)	YES

How to test that a dish can be used in the microwave
First, put the dish on the turntable without food, and place a glass containing approximately 100 cc of water on the dish. Then select HIGH POWER and heat the water for 15 to 30 seconds. If the dish does not become warm it can be used in the microwave oven; if it becomes warm it cannot be used

Before You Call For Service

Refer to the following short checklist. You may find that the problem you are experiencing has nothing to do with the microwave oven itself. A couple of quick checks may save you an unnecessary service call.

Problem

The oven doesn't work at all.

Check the following

The mains plug is securely plugged into the power socket.

The door is firmly closed.

The cooking time is set on the timer selector control.

The fuse in the mains plug has not blown.

The mains circuit breaker in the home has not tripped.

Problem

"Arcing" or sparking in the oven interior.

Check the following

Any dishes, trays etc which are made of metal or have metal trims must not be used in the microwave oven.

Metal skewers should be covered with food and make sure they don't touch the sides of the oven interior when rotating. If "arcing" occurs again, remove skewers until food is cooked.

Remove any other metal cookware.

TECHNICAL SPECIFICATION

Input Power:

Output Power:

Microwave Frequency:

Outside Dimensions:

Oven Cavity Dimensions:

Oven Capacity:

Net Weight:

230-240V\~ 50Hz, 1250W

800W

2450MHz

288mm(H)x410mm(W)x486mm(D)

221mm(H)x347mm(W)x314mm(D)

23Liters

Approx.13.9kg

IMPORTANT DISPOSAL INSTRUCTIONS

As a responsible retailer we care about the environment.

As such we urge you to follow the correct disposal procedure for your product and packaging materials. This will help conserve natural recourses and ensure that it is recycled in a manner that protects health and the environment.

You must dispose of this product and its packaging according to local laws and regulations.

Because this product contains electronic components, the product and its accessories must be disposed of separately from household waste when the product reaches its end of life.

Contact your local authority to learn about disposal and recycling.

The product should be taken to your local collection point for recycling. Some collection points accept products free of charge.

If something doesn't seem to work

If there is something about your appliance which you do not understand and you live in the UK you can phone our help line during normal office hours on: 0113 2793520

Calls are charged at standard rates.

We apologise for any inconvenience caused by minor inconsistencies in these instructions, which may occur as a result of product improvement and development.

Kesa U.K HU1 3AU 09 / 05 / 2008