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  • Bosch corporate
 
dishwashers

Karl's guide to perfect dishwashing results.

See the difference with every load.

Let me explain the best way to stack items, the importance of rinse aid and how to maintain and look after your dishwasher. You'll see the difference where it really counts - perfectly clean dishes every time.

Karl, the Bosch Engineer.

Why are salt and rinse aid important?

Using dishwasher salt protects your appliance from limescale and softens the water. Rinse aid not only ensures spot-free, shiny dishes but also helps with drying.

For more information on the importance of using these products, click on the links to the right.


Dishwashing results not always as you might expect?

If you've experienced any issues with the items shown, click through to see Karl's tips on how to get your dishwasher working at its very best.

How to load your dishwasher

A little know-how on how to load your dishwasher.

Take a little time to load your dishwasher correctly and it will help every item to come out cleaner.

Top basketCutlery drawer/basketBottom basketFinal checks

Which programme should I use?

Most of the latest models have a guide printed on the top edge of the door.

Here's an overview of the programmes available on your dishwasher so you can see which programme is most suitable.


Essential dishwasher maintenance.

Cleaning certain parts of your dishwasher regularly is vital to ensure optimum results. Click on the links to the right for more details.

Targeted cleaning and care products.

Our range of tested and approved cleaning and care products are proven to protect your dishwasher and ensure it keeps delivering excellent cleaning results.

Targeted cleaning care
Dishwasher care

Dishwasher care

Use every 1-2 months to clean grease and food deposits.

Price: £6.49

Code: 00311565

Buy now
Dishwasher maintenance

Dishwasher maintenance cleaning powder

Use every 4-6 months for tough grease, starch and protein residues.

Price: £7.99

Code: 00311580

Buy now
Descaler

Descaler

Use once a year to remove harmful limescale deposits from your dishwasher. Also suitable for washing machines.

Price: £5.99

Code: 00311506

Buy now
Ask karl

Helpful advice
from Karl,
the Bosch Engineer.

Dishwasher salt

  • Regenerates your dishwasher’s water softening unit.
  • Always use specialist, granular dishwasher salt – never table salt.
  • A warning light shows you when you need to top up the salt levels – when levels are too low, a white film can form on the interior and glassware.
  • If you spill any salt when filling up the container, always run a pre-rinse afterwards to avoid corrosion.
  • Also make sure you set your water hardness correctly when setting up the appliance.
Ask karl

Helpful advice
from Karl,
the Bosch Engineer.

Rinse aid

  • Helps maintain excellent drying results.
  • A warning light shows when you need to top up the rinse aid.
  • Without rinse aid, water doesn't disperse properly from dish surfaces, leaving them streaky or wet, and water droplets may be visible on glassware.
Ask karl

Helpful advice
from Karl,
the Bosch Engineer.

Cutlery

Starch fork

White starch deposits

Make sure the dishwasher is loaded correctly and the spray arms are not blocked.

Corrosion fork

Corrosion

Ensure acidic or salt food residues are rinsed off, or use a pre-rinse cycle. Stainless steel is less prone to corrosion.

Discolouration fork

Discolouration

Avoid steel and silver cutlery touching to prevent reactions with each other.

Ask karl

Helpful advice
from Karl,
the Bosch Engineer.

Crockery

Yellow/bown crockery

Yellow/brown residue

Check dosage is correct as this residue forms when insufficient detergent is used.

Dull crockery

Dull residues

Check detergent dosage is correct and/or check items have been loaded correctly.

Scratched crockery

Cutlery scratches

Generally these are made by cutlery beforehand, not as a result of cleaning.They can be removed using white vinegar.

Pattern faded crockery

Pattern fading

Check crockery is dishwasher safe.

Ask karl

Helpful advice
from Karl,
the Bosch Engineer.

Limescale marks

Limescale marks

Salt levels are not topped up and/or water hardness has not been correctly set.

Ask karl

Helpful advice
from Karl,
the Bosch Engineer.

Items not drying

Wet glass

Wet items

Ensure rinse aid levels are topped up and all items are stacked so water can run freely off them.

Wet plastic

Plastics not drying

Use the extra drying function if your model has it.

Ask karl

Helpful advice
from Karl,
the Bosch Engineer.

Glassware

Water droplets glassware

Water droplets

Ensure rinse aid levels are topped up and all items are stacked so water can run freely off.

Limescale glassware

Limescale

Salt levels are not topped up and/or water hardness has not been correctly set.

Streaks and smears glassware

Streaks and smears

Check detergent dosage is correct and ensure glassware is stacked so water can run off.

Corrosion glassware

Corrosion

Check glassware is dishwasher proof and/or use lower temperature programmes.

Ask karl

Helpful advice
from Karl,
the Bosch Engineer.

Wooden items splitting

Cracked wooden items

Chopping boards, wooden spoons and cutlery with wooden handles are not suitable for dishwashers as they are prone to cracking or splitting.

Ask karl

Helpful advice
from Karl,
the Bosch Engineer.

Cutlery drawer/basket

Cutlery drawer/basket
  • Remove acidic or salt residues from cutlery to avoid corrosion.
  • Separate different types of cutlery and ensure they are not touching each other to avoid metal reactions or damage.
  • Use the VarioDrawer upper cutlery tray, if your model has one, to secure cutlery and free up space in the lower basket.
Ask karl

Helpful advice
from Karl,
the Bosch Engineer.

Top basket

Top basket
  • Use the top basket for smaller, lightly soiled items such as cups, glasses and saucers.
  • Move the top basket up if you need to accommodate larger items in the lower basket.
  • Ensure water can run freely from glassware to prevent streaks and smears.
  • Scrape any excess food from plates and dishes before placing them in the basket.
Ask karl

Helpful advice
from Karl,
the Bosch Engineer.

Bottom basket

Bottom basket
  • Use the lower basket for larger, more heavily soiled items such as plates, pots and pans.
  • Position plates and baking trays so that the dirty side is facing towards the middle.
  • Place items such as cups, glasses, bowls, pots and pans face down, so they do not fill up with water.
Ask karl

Helpful advice
from Karl,
the Bosch Engineer.

Final checks before starting the programme

  • Always check that the spray arms can move freely before switching on the machine.
  • Check that the tablet dispenser is dry and clean before you put the tablet in.
Ask karl

Helpful advice
from Karl,
the Bosch Engineer.

Standard programmes

  • Eco (all models): The most efficient option for water and energy consumption that still offers A-rated washing and drying.
  • Auto (some models): Takes out the guesswork by using sensors to tailor the wash automatically to the load.
  • Intensive (some models): Ideal for heavily soiled pots and pans as it uses higher temperatures and spray pressure.
  • Quick wash (most models): A 30-minute programme with no drying makes it ideal for parties. Liquid detergent can sometimes provide better results than tablets for shorter programmes.
  • Lower temperatues (some models): 30°C to 40°C programmes are available to clean delicate items, such as glassware, which reduce the temperature and spray pressure.
Ask karl

Helpful advice
from Karl,
the Bosch Engineer.

Additional options on some models

  • Half load: For smaller loads, which also allows items to be placed anywhere. Saves time as well as water and energy.
  • Extra drying: Select when the load contains items with poor heat retention, such as plastics or silicon, as it provides additional drying time needed for these materials.
  • VarioSpeed: Reduces the programme time by up to half, with no compromise on washing and drying quality.
  • Intensive zone: Delivers an intensive wash in the bottom basket for more thorough cleaning of heavily soiled items, whilst the top basket carries on as normal for more delicate items.
Ask karl

Helpful advice
from Karl,
the Bosch Engineer.

Spray arms

Dishwasher spray arms
  • The spray arms distribute water around the dishwasher and can become clogged with small pieces of food.
  • The top arm can be removed by unscrewing it, while the bottom arm will clip off. Check the outlet nozzles. These can be cleaned under the tap using a cocktail stick.
Ask karl

Helpful advice
from Karl,
the Bosch Engineer.

Filter unit

Filter unit
  • The filter unit can be removed by unscrewing the filter cylinder at the base of the dishwasher and lifting the unit out. This can then be run under the tap and cleaned before being replaced.
  • If the mesh filter is not regularly cleaned and becomes blocked, food particles may not be removed during the cycle and could redeposit on dishes.
  • If the pump is blocked, waste water can't be pumped out of the machine and could cause the programme to stall.
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