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DeLonghi BCO420 - User Manual

DeLonghi BCO420
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14
Symbols used in the present instructions
Important warnings carry these symbols. It is vitally important
to observe these warnings.
Danger!
Failure to observe this warning can be the cause of lesions from
electric shock which may endanger life.
Caution!
Failure to observe this warning can be the cause of lesions or of
damage to the appliance.
Danger of scalding!
Failure to observe this warning can be the cause of scalds or
burns.
Take note:
This symbol highlights advice or information important for the
user.
Important safety warnings
Danger!
As the appliance uses electric current, the possibility of electric
shocks cannot be excluded. Therefore, please pay attention to
the following safety warnings:
• Donottouchtheappliancewithwethandsorfeet.
• Donottouchtheplugwithwethands.
• Ensurethattheelectricsocketusedisalwaysfreelyacces-
sible, so that the plug can be easily disconnected when
necessary.
• Ifyouwishtoremovetheplugfromthesocket,holdthe
plug itself. Never pull the electric cable, as this may dama-
ge it.
• Todisconnecttheappliancecompletely,removetheplug
from the electric socket.
• Iftheappliancebreaksdown,donotattempttorepairit.
Switch o the appliance, remove the plug from the socket
and contact Technical Assistance.
• Iftheplugorsupplycablearedamaged,then,inorder
to avoid any possible risks, have them replaced solely by
De’LonghiTechnicalAssistance.
Caution:
Keep all packaging material (plastic bags, expanded polystyre-
ne) out of the reach of children.
Caution:
The appliance should not be used by people (including chil-
dren) with limited psychological/physical/sensory capacity,
or with insucient expertise or knowledge, unless they are
carefully supervised and instructed by a responsible person.
Children should be supervised and not allowed to play with
the appliance.
Danger of scalding!
This appliance produces hot water, and when in use can form
steam vapour.
Take care not to come into contact with jets of hot water or
steam.
Use in conformity with purpose
This appliance is designed for the preparation of coee and for
heating beverages.
The appliance is intended solely for domestic use. It is not me-
ant to be used in:
• roomsusedaskitchensbythestaofshops,ocesand
other work-places
• farmhouseholidayaccommodation
• hotels,motelsandotherplacesoeringhospitality
• roomlets
Any use other than that intended shall be considered improper
and therefore dangerous. The manufacturer is not responsible
for injuries resulting from improper use of the appliance.
Instructions for use
Read these instructions carefully before using the appliance.
Failure to respect these instructions can be the source of lesions
and of damage to the appliance.
The manufacturer is not responsible for any damage resulting
from a failure to respect these instructions for use.
Take note:
Keep these instructions carefully. If this appliance is ever pas-
sed on to other persons, ensure that they are also given these
instructions for use.
Checking the item
After removing the packaging, check that the appliance is
intact and complete with all its accessories.Do not use the
appliance if it is obviously damaged. Contact your Authorized
Technical Assistance.
Installation of the appliance
Caution!
When installing the appliance, the following safety instruc-
tions must be observed:
• The appliance emits heat into the surrounding envi-
Safety Warnings

Table of Contents

Questions and Answers

  • I
    imillsAug 12, 2025
    How to fix espresso coffee not coming out of my DeLonghi BCO420 Coffee Maker?
    • M
      Misty SmithAug 12, 2025
      If the espresso coffee no longer comes out of your DeLonghi Coffee Maker, it could be due to a few reasons. First, check if the water tank is empty and refill it if needed. Another possibility is that the holes in the filter-holder where the coffee emerges are blocked; if so, clean them out. Lastly, the nozzle of the espresso boiler might be clogged. In this case, perform the cleaning procedure described in the manual section “Cleaning the boiler nozzle”.
  • F
    Felicia NortonAug 16, 2025
    Why is my DeLonghi BCO420 pump so noisy?
    • T
      Travis CookAug 16, 2025
      If your DeLonghi Coffee Maker pump is making a high level of noise, it could be due to a couple of reasons. First, check if the water tank is empty and fill it if necessary. Also, make sure the tank is properly inserted and the valve on its base is open. You may need to press the tank lightly to open the valve.
  • U
    usandersAug 19, 2025
    Why is the milk not frothing in my DeLonghi BCO420 Coffee Maker?
    • M
      Monique MartinAug 20, 2025
      If the milk is not frothing when making a cappuccino with your DeLonghi Coffee Maker, ensure the milk is cold enough by using milk at fridge temperature. Also, check if the milk-frother is dirty and carefully clean the small holes, particularly those indicated in fig. 27.
  • B
    Brandon StoneAug 25, 2025
    Why is the coffee from my DeLonghi Coffee Maker thin and pale?
    • C
      carly42Aug 25, 2025
      If the consistency of the coffee from your DeLonghi Coffee Maker is thin and pale, and it emerges rapidly from the spout, several factors could be the cause. Ensure the ground coffee is tamped down a bit harder. Also, verify that you are using a sufficient quantity of ground coffee. Only use ground coffee specifically for espresso coffee machines. If none of these resolves the issue, consider changing the type of ground coffee you are using. Also, make sure that you are using the correct amount of coffee. If the nozzle of the espresso boiler is clogged up, carry out a cleaning operation as described in the chapter “Cleaning the espresso boiler nozzle”. Finally, ensure the filter is not blocked by performing a cleaning operation as outlined in the paragraph “Cleaning the filter”.
  • R
    Robert GrayAug 27, 2025
    Why is my DeLonghi BCO420 Coffee Maker taking longer to brew filter coffee?
    • M
      mariewilliamsAug 27, 2025
      If the time taken to percolate the filter coffee is getting longer with your DeLonghi Coffee Maker, the coffee-maker filter may need de-scaling. Carry out the de-scaling procedure as described in the paragraph “De-scaling of the filter coffee section”.
  • B
    Brian OrrAug 31, 2025
    Why is my DeLonghi Coffee Maker espresso coffee cold?
    • K
      Keith RichAug 31, 2025
      If the espresso coffee from your DeLonghi Coffee Maker is cold, there could be a few reasons. First, make sure the OK light for espresso is on before pressing the coffee supply switch; if it's not, wait for it to illuminate. Another reason might be that the pre-warming operation was not performed. Also, remember to pre-warm the cups with hot water or leave them on the cup-warming shelf for at least 20 minutes.
  • W
    Wendy ChandlerSep 4, 2025
    What to do if espresso coffee drips from the edge of the filter-holder on my DeLonghi BCO420 Coffee Maker?
    • W
      washingtonaustinSep 4, 2025
      If the espresso coffee drips from the edge of the filter-holder instead of through the holes in your DeLonghi Coffee Maker, ensure the filter-holder is correctly connected and turned forcibly downwards. If the issue persists, the washer on the espresso boiler may have lost its elasticity, requiring a replacement from your Service Centre. Also, check if the holes in the filter-holder nozzles are blocked and clean them if necessary.
  • J
    Jorge WhiteSep 7, 2025
    Why does my DeLonghi BCO420 coffee taste acidic?
    • J
      Joshua GrantSep 7, 2025
      If the filter or espresso coffee from your DeLonghi Coffee Maker has an acidic flavor, it may be due to insufficient rinsing after the de-scaling operation. Rinse the appliance as described in the chapter “De-scaling of the filter section” or “De-scaling of the espresso section”.

Summary

Safety Warnings

Symbols and General Precautions

Explains safety symbols like Danger and Caution, and provides general warnings.

Specific Safety Guidelines

Covers important safety warnings, scalding risks, intended use, instructions, and installation.

Safety Warnings - Description

Appliance Description and Technical Data

Lists appliance components and provides essential technical specifications.

Preparation of filter and espresso coffee

Antichlor and Water-Softening Filter Installation

Guides on installing antichlor and water-softening filters.

Filter Coffee Preparation

Details the steps for preparing filter coffee.

Espresso Coffee Preparation

Provides instructions for preparing espresso coffee.

Preparation of espresso coffee and Cappuccino

Espresso Coffee with Ground Coffee

Instructions for preparing espresso using ground coffee.

Espresso Coffee Using Pods

Guidance on preparing espresso coffee with ESE standard pods.

Cappuccino Preparation

Steps for preparing cappuccino, including milk frothing.

Production of hot water - Cleaning

Milk Frothing and Hot Water Production

Details on frothing milk for cappuccino and producing hot water.

Milk-Frother Cleaning

Instructions for cleaning the milk-frother and steam nozzle.

Cleaning - Descaling

Espresso Coffee Filter Cleaning

Procedure for cleaning espresso coffee filters and components.

Boiler Nozzle Cleaning

Steps for cleaning the boiler nozzle.

Espresso and Filter Coffee Descaling

Guides for de-scaling the espresso and filter coffee sections.

Disposal - Troubleshooting

Troubleshooting Common Issues

Lists problems with espresso coffee, causes, and solutions.

Troubleshooting - Electrical connection

Troubleshooting Milk Frothing and Flavor

Addresses issues with milk not frothing and acidic coffee flavor.

Electrical Connection (UK)

Details electrical connection requirements and plug wiring for the UK.

DeLonghi BCO420 Specifications

General IconGeneral
BrandDeLonghi
ModelBCO420
CategoryCoffee Maker
LanguageEnglish

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