BOSCH NKF645BA2C Hob User Manual

June 4, 2024
Bosch

**BOSCH NKF645BA2C Hob User Manual

**

warning Safety

Observe the following safety instructions.

General information
  • Read this instruction manual carefully.

  • Keep the instructions, the appliance pass and the product information safe for future
    reference or for the next owner.

  • Do not connect the appliance if it has been  damaged in transit.

Intended use

Only a licensed professional may connect appliances without plugs. Damage caused by incorrect connection is not covered under the warranty.

Only use this appliance:

  • To prepare meals and drinks.
  • Under supervision. Never leave the appliance unattended when cooking for short periods.
  • In private households and in enclosed  spaces in a domestic environment.
  • Up to an altitude of max. 2000 m above sea level. Do not use the appliance:
  • With an external timer or a separate remote control. This does not apply if operation with appliances included in EN 50615 is switched off.
Restriction on user group

This appliance may be used by children aged 8 or over and by people who have reduced physical, sensory or mental abilities or inadequate experience and/or knowledge, provided that they are supervised or have been instructed on how to use the appliance safely and have understood the resulting dangers.

Do not let children play with the appliance. Children must not perform cleaning or user maintenance unless they are at least 15 years old and are being supervised. Keep children under the age of 8 years away from the appliance and power cable

Safe use

WARNING ‒ Risk of fire!

Leaving fat or oil cooking on an unattended hob can be dangerous and may lead to fires.

  • Never leave hot oil or fat unattended.
  • Never attempt to extinguish a fire using water; instead, switch off the appliance and then cover with a lid or a fire blanket. The cooking surface becomes very hot.
  • Never place flammable objects on the cooking surface or in its immediate vicinity.
  • Never place objects on the cooking surface. Hob covers can cause accidents, for example due to overheating, catching fire or materials shattering.
  • Do not use hob covers. Food may catch fire.
  • The cooking process must be monitored. A short process must be monitored continuously.

WARNING ‒ Risk of burns!

The appliance and its parts that can be touched become hot during use, particularly the hob surround, if fitted.

  • Caution should be exercised here in order to avoid touching heating elements.
  • Young children under 8 years of age must be kept away from the appliance. Hob protective grilles may cause accidents.
  • Never use hob protective grilles. The appliance becomes hot during operation.
  • Allow the appliance to cool down before cleaning

WARNING ‒ Risk of electric shock!

Incorrect repairs are dangerous.

  • Repairs to the appliance should only be carried out by trained specialist staff.
  • Only use genuine spare parts when repairing the appliance.
  • If the power cord of this appliance is damaged, it must be replaced with a special connection cable, which is available from the manufacturer or his Customer Service. A damaged appliance is dangerous.
  • Never operate a damaged appliance.
  • If the surface is cracked, you must switch off the appliance in order to prevent a possible electrical shock. To do this, switch off the appliance via the fuse in the fuse box.
  • Set the hotplate control to zero.
  • Call customer service.
  • Repairs to the appliance must only be carried out by trained and qualified personnel. An ingress of moisture can cause an electric shock.
  • Do not use steam- or high-pressure cleaners to clean the appliance. The insulation on cables of electrical appliances may melt if it touches hot parts of the  appliance.
  • Never bring electrical appliance cables into contact with hot parts of the appliance.

WARNING ‒ Risk of injury!

Saucepans may suddenly jump due to liquid between the saucepan base and the hotplate.

  • Always keep hotplates and saucepan bases dry.

WARNING ‒ Risk of suffocation!

Children may put packaging material over their heads or wrap themselves up in it and suffocate.

  • Keep packaging material away from children.

  • Do not let children play with packaging material.
    Children may breathe in or swallow small parts, causing them to suffocate.

  • Keep small parts away from children.

  • Do not let children play with small parts.

Preventing material damage

ATTENTION!

Rough pot and pan bases will scratch the ceramic.

  • Check your cookware. Boiling pans dry may damage cookware or the appliance.
  • Never place empty pans on a heated hotplate or allow to boil dry. Incorrectly positioned cookware can cause the appliance to overheat.
  • Never place hot pots or pans on the controls or the hob surround. Damage can occur if hard or pointed objects fall onto the hob.
  • Do not let hard or pointed objects fall onto the hob. Non heat-resistant materials will melt on heated hotplates.
  • Do not use oven protective foil.
  • Do not use aluminium foil or plastic containers.
Overview of the most common damage

Here you can find the most common types of damage and tips on how to avoid them.

Damage Cause Measure
Stains Food boiling over Remove boiled-over food immediately with a glass

scraper.
Stains| Unsuitable cleaning products| Only use cleaning products that are suitable for glass ceramic.
Scratch es| Salt, sugar or sand| Do not use the hob as a work surface or storage space.
Scratch es| Rough pot or pan bases| Check your cookware.
Discoloration| Unsuitable cleaning products| Only use cleaning products that are suitable for glass ceramic.
Discoloration| Pan abrasion, e.g. aluminium| Lift pots and pans to move on the hob.
Blisters| Sugar or food with a high sugar content| Remove boiled-over food immediately with a glass scraper.

Environmental protection and saving energy

Disposing of packaging

The packaging materials are environmentally compatible and can be recycled.

  • Sort the individual components by type and dispose of them separately.
Saving energy

If you follow these instructions, your appliance will use less energy.
Select the cooking zone to match the size of your pan. Centre the cookware on the hob.
Use cookware whose base diameter is the same diameter as the hotplate.
Tip: Cookware manufacturers often give the upper diameter of the saucepan. It is often larger than the base diameter.

  • Unsuitable cookware or incompletely covered cooking zones consume a lot of energy. Cover saucepans with suitable lids.
  • Cooking without a lid consumes considerably more energy. Lift lids as infrequently as possible.
  • When you lift the lid, a lot of energy escapes. Use a glass lid.
  • You can see into the pan through a glass lid without having to lift it. Use pots and pans with flat bases.
  • Uneven bases increase energy consumption. Use cookware that is suitable for the quantity of food.
  • Large items of cookware containing little food need more energy to heat up. Cook with only a little water.
  • The more water that is contained in the cookware, the more energy is required to heat it up. Turn down to a lower power level early on.
  • If you use an ongoing power level that is too high, you will waste energy. Take advantage of the hob’s residual heat. With longer cooking times switch off the hotplate 5-10 minutes before the end of cooking.
  • Unused residual heat increases energy consumption.
    Product Information according (EU) 66/2014 can be found on the attached appliance pass and online on the product page for your appliance.

Familiarizing yourself with your appliance

The instruction manual is the same for various different hobs. You can find the hob dimensions in the overview of models. → Page 2

Control panel

You can use the control panel to configure all functions of your appliance and to obtain information about the operating status.

 Indicators/symbols

The displays show selected values and functions.

Display Name
Heat settings
Residual heat
Electronic boil start control
Touch fields

Touch fields are touch-sensitive surfaces. To select a function, touch the relevant field.

Touch field Name
Childproof lock
Activating the dual-circuit hotplate
Activating the extended cooking zone

Notes

  • Always keep the control panel dry. Moisture impairs the function.
  • Do not pull pans close to the displays and touch
    fields. The electronics may overheat.
Hotplates

You can find an overview of the different activation of the hotplates here

Hotplate Name Activating and deactivating
Single-circuit cooking zone
Dual-circuit hotplate Touch .
Extended cooking zone Touch

Notes

  • Dark areas in the glow pattern of the hotplate are part of the technical design. They do not affect the functionality of the hotplate.
  • The hotplate regulates the temperature by switching the heat on and off. The heat may also switch on and off when at the highest setting.
  • With multi-circuit hotplates, the heating of the hotplate and the activated areas may switch on or off at different times. Reasons:
    • Easily damaged components are protected against overheating.
    • The appliance is protected against electrical overload.
    • This achieves a better cooking result.
Residual heat indicator
Display Meaning
The hotplate is so hot that you can keep small dishes warm or melt cook-

ing chocolate.
| The hotplate is hot.

 Basic operation

 Switching the hob on or off

You can switch the hob on and off with the hotplate switch. When the hob is switched on, the heat setting display lights up.

Setting the hotplates

You can use the hotplate control to adjust the heat output of the hotplate.

Heat setting

1| Lowest setting
9| Highest setting
.| Every heat setting has an intermediate setting, e.g. 4. .

Recommended cooking settings

You can find an overview of different foods with appropriate power levels here.
The cooking time varies depending on the type, weight, thickness and quality of the food. The ongoing power level depends on the cookware used.

Cooking tips

  • To bring food to the boil, use heat setting 9.
  • Stir thick liquids occasionally.
  • Food that needs to be seared quickly or that initially loses a lot of liquid during frying should be fried in small portions.
  • Tips for saving energy when cooking.

Food| Quantity| Heat setting| Total cooking time in minutes
---|---|---|---
Stock| 500 ml – 1 l| A 7-8| 4-7
Thickened soups| 500 ml – 1 l| A 2-3| 3-6
Milk1| 200-400 ml| A 1-2| 4-7
1 Prepare the dish without the lid.

Heating or keeping warm

Stew, e.g. lentil stew 400-800 g A 1-2

Defrosting and heating

Spinach, frozen 300-600 g A 2.-3. 10-20
Goulash, frozen 500 g-1 kg A 2.-3. 20-30

Poaching or simmering

Fish1, 2 300-600 g A 4-5 20-25

1 Bring the water to the boil with the lid on.
2 Continue to cook the dish without a lid.

Boiling, steaming or stewing

Rice with double the volume of water 120-250 g A 2-3 20-25
Unpeeled boiled potatoes with 1-3 cups water 750 g – 1 kg A 4-5 30-40
Boiled potatoes with 1-3 cups water 750 g – 1 kg A 4-5 20-30
Vegetables with 1-3 cups water 500 g – 1 kg A 2.-3. 15-20
Frozen vegetables with 1-3 cups water 500 g – 1 kg A 4.-5. 15-20

Braising

Beef olives x 4 A 4-5 50-60
Pot-roasting 1 kg A 4-5 80-100

Frying with little oil
Fry food without a lid

Escalope, plain or breaded x 1-2 A 6-7 8-12
Cutlet, plain or breaded1 x 1-2 A 6-7 8-12
Steak, 3 cm thick x 1-2 A 7-8 8-12
Fish or fish fillet, breaded x 1-2 A 6-7 8-12
Fish or fish fillet, breaded and frozen, e.g. fish fingers 200-300 g A 6-7

8-12
Pancakes| –| A 6-7| fry one after the other
1 Turn the dish several times.

Electronic boil start control

The electronic boil start control heats the hotplate using the highest heat setting and then switches down to the ongoing cooking setting you have selected. The time taken for the hotplate to heat up depends on the ongoing cooking setting selected.

Setting the electronic boil start control

The electronic boil start control can only be activated inthe first 30 seconds after switching on the hotplate.

  1. Set the required ongoing cooking setting using the hotplate switch.

Recommended settings for cooking with electronic boil start control

The values given here are guidelines. The smaller quantities given are for the smaller hotplates and the larger ones for the larger hotplates.

Cooking tips

  • Electronic boil start control is designed for cooking with little water. This function is not suitable for food cooked in a lot of water, e.g. pasta.
  • Cover the saucepan with a lid.
  • Stir thick liquids occasionally.
  • Add max. 3 cups of water to the food when cooking on large hotplates or max. 2 cups of water on small hotplates.

Heating

Food| Quantity| Heat setting| Total cooking time in minutes
---|---|---|---
Stock| 500 ml – 1 l| A 7-8| 4-7
Thickened soups| 500 ml – 1 l| A 2-3| 3-6
Milk1| 200-400 ml| A 1-2| 4-7
1 Prepare the dish without the lid.

Heating and keeping warm

Stew, e.g. lentil stew 400-800 g A 1-2

Defrosting and heating

Spinach, frozen 300-600 g A 2.-3. 10-20
Goulash, frozen 500 g-1 kg A 2.-3. 20-30

Poaching

Fish1, 2 300-600 g A 4-5 20-25

1 Bring the water to the boil with the lid on.
2 Continue to cook the dish without a lid.

Boiling
Rice with double the volume of water 120-250 g A 2-3 20-25
Unpeeled boiled potatoes with 1-3 cups water 750 g – 1 kg A 4-5 30-40
Boiled potatoes with 1-3 cups water 750 g – 1 kg A 4-5 20-30
Vegetables with 1-3 cups water 500 g – 1 kg A 2.-3. 15-20
Frozen vegetables with 1-3 cups water 500 g – 1 kg A 4.-5. 15-20

Stewing

Beef olives x 4 A 4-5 50-60
Pot-roasting 1 kg A 4-5 80-100

Frying

Fry food without a lid.

Escalope, plain or breaded x 1-2 A 6-7 8-12
Cutlet, plain or breaded1 x 1-2 A 6-7 8-12
Steak, 3 cm thick x 1-2 A 7-8 8-12
Fish or fish fillet, breaded x 1-2 A 6-7 8-12
Fish or fish fillet, breaded and frozen, e.g. fish fingers 200-300 g A 6-7

8-12
Pancakes| –| A 6-7| fry one after the other
1 Turn the dish several times.

Childproof lock

You can use the childproof lock to prevent children from switching on the hob.

Activating the childproof lock

Requirement : The hob is switched off.

  • Press and hold for approx. 4 seconds.
    • The indicator above lights up for 10 seconds.
    • The hob is locked.
Deactivating the childproof lock
  • Press and hold for approx. 4 seconds.
    • The lock is released
Automatic childproof lock

This function automatically activates the childproof lock when you switch off the hob. The automatic childproof lock can be activated in the basic settings.

Locked hob

If you set a cooking zone while the hob is locked, the following happens:

  • flashes in the cooking zone display or the residual heat indicator flashes alternately with .
  • The display above the symbol lights up. Switch the cooking zone off. Deactivate the lock.

Automatic switch-off

If you do not change the settings of a hotplate for a long time, automatic switch-off will be activated. When the hotplate switches off depends on the heat setting selected (1 to 10 hours). The hotplate stops heating. and the residual heat indicator flash alternately on the hotplate display. Switch the hotplate off.
Note: You can switch the hotplate back on again at any time.

Basic settings

You can configure the basic settings for your appliance to meet your needs.

Overview of the basic settings

You can find an overview of the basic settings and the default factory settings here.

Dis- play Selection
Automatic childproof lock

 Switched off1
Switched on
Manual and automatic childproof lock are switched off.

| Activation of the heating elements

Switched off
Switched on
 The last setting before switching off the hotplate.1

| Resetting to the factory settings

Switched off.1
Switched on.

1 Factory setting

Changing basic settings

Requirement: The hob is switched off.

  1. Switch on the front left hotplate at heat setting 1.

  2. Within the next 10 seconds press and hold for approx. 4 seconds
    Control Panel`

    •  and flash alternately on the lower display.
    • lights up on the upper display.
  3.  Repeatedly touch until the required indicator appears on the lower display.

  4.  Repeatedly touch until the required setting appears on the upper display.
    Control Panel`

  5. Press and hold for 4 seconds.

    • The setting is activated.

Tip: To exit the basic settings, switch off the hob using . Switch the hob on again and reset.

Cleaning and servicing

To keep your appliance working efficiently for a long time, it is important to clean and maintain it carefully.

Cleaning products

You can obtain suitable cleaning products and glass scrapers from customer service, the online shop or a retailer.

ATTENTION!
Unsuitable cleaning products may damage the surfaces of the appliance.

  • Never use unsuitable cleaning products.

Unsuitable cleaning products

  • Undiluted detergent

  • Detergent intended for dishwashers

  • Abrasive cleaners

  • Aggressive cleaning products such as oven spray or stain remover
    Abrasive sponges

  • High-pressure or steam jet cleaners

Cleaning the glass ceramic

Clean the hob after every use to stop cooking residues from getting burnt on.
Note: Note the information on unsuitable cleaning products.
Requirement: The hob has cooled down.

  1.  Remove heavy soiling using a glass scraper.
  2. Clean the hob with a cleaning product for glass ceramic.
    Follow the cleaning instructions on the product packaging.
    Tip: You can achieve good cleaning results using a special sponge for glass ceramic.
Cleaning the hob surround

Clean the hob frame after use if dirty or stained.
Notes

  • Note the information on unsuitable cleaning products.
  • Do not use the glass scraper.
  1. Clean the hob frame with hot soapy water and a soft cloth. Wash new sponge cloths thoroughly before use.
  2. Dry with a soft cloth.

Disposal

Find out here how to dispose of old appliances correctly.

Disposing of old appliance

Valuable raw materials can be reused by recycling.

  •  Dispose of the appliance in an environmentally friendly manner. Information about current disposal methods are available from your specialist dealer or local authority

This appliance is labelled in accordance with European Directive 2012/19/EU concerning used electrical and electronic appliances (waste electrical and electronic equipment – WEEE). The guideline determines the framework for the return and recycling of used appliances as applicable throughout the EU.

Customer Service

If you have any queries on use, are unable to rectify faults on the appliance yourself or if your appliance needs to be repaired, contact Customer Service. Function-relevant genuine spare parts according to the corresponding Ecodesign Order can be obtained from Customer Service for a period of at least 10 years from the date on which your appliance was placed on the market within the European Economic Area.

Note: Under the terms of the manufacturer’s warranty the use of Customer Service is free of charge. Detailed information on the warranty period and terms of warranty in your country is available from our aftersales service, your retailer or on our website. If you contact Customer Service, you will require the product number (E-Nr.) and the production number (FD) of your appliance. The contact details for Customer Service can be found in the enclosed Customer Service directory or on our website.

12.1 Product number (E-Nr.) and production number (FD)

You can find the product number (E-Nr.) and the production number (FD) on the appliance’s rating plate. The rating plate can be found:

  • on the appliance certificate.
  • on the lower section of the hob.

Make a note of your appliance’s details and the Customer Service telephone number to find them again quickly.

Thank you for buying a Bosch Home Appliance!

Looking for help? You’ll find it here.

Expert advice for your Bosch home appliances, help with problems or a repair from Bosch experts. Find out everything about the many ways Bosch can support you: www.bosch-home.com/service Contact data of all countries are listed in the attached service directory.

BSH Hausgeräte GmbH
Carl-Wery-Straße 34
81739 München, GERMANY
www.bosch-home.com

Valid within Great Britain:
Imported to Great Britain by
BSH Home Appliances Ltd.
Grand Union House
Old Wolverton Road
Wolverton, Milton Keynes
MK12 5PT
United Kingdom

References

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