October 24, 2026
Tech Supply Shed
October 24, 2026
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Tech Supply Shed
How to Descale and Maintain a Coffee Machine
Coffee-machine maintenance involves several different jobs. Descaling addresses mineral deposits in the water path; it is not a substitute for removing coffee oils or cleaning milk-contact parts. Use the procedure and products specified for your exact model. A routine copied from a similar-looking machine can use the wrong cycle, cleaning disc or solution and leave the original problem unresolved.
Identify the machine and the maintenance task
Find the model number and its current instruction manual before adding any cleaner. Note the difference between a cleaning-cycle alert and a descale alert. Some machines use separate procedures and consumables. Others combine certain tasks. The wording on a generic cleaning tablet is not enough to establish that it is suitable for every part of your machine.
If buying a machine, check this maintenance workflow before purchase. Look for accessible tanks, removable trays and clear instructions. Consider how easily you can clean the parts after making several milk drinks. A design that fits your routine is more likely to receive consistent care than one whose cleaning sequence feels impractical on a busy morning.
Build a short after-use routine
Remove used coffee and clean accessible brewing accessories as directed. Empty and rinse the drip tray when needed, then let removable parts dry appropriately. Wipe splashes before they become stubborn residue. These ordinary jobs address material that descaling will not remove and make it easier to notice a new leak or unusual change in operation.
Milk-contact parts deserve prompt attention. Follow the manufacturer's instructions for wiping, purging, dismantling or rinsing the specific wand or milk system. Hot surfaces and steam require care. Do not assume an automatic purge eliminates every manual cleaning step. Likewise, a removable component is not necessarily dishwasher-safe; check the manual before putting it through a hot wash.
Breville Bambino Plus Espresso Machine Stainless Steel
Use the Breville Bambino Plus BES500 product hub for this machine and distinguish its cleaning and descaling procedures. Keep the correct consumables available and allow time to finish every prescribed stage. Avoid borrowing a button sequence from a different Bambino model.
Keep coffee-oil cleaning separate from descaling
Coffee oils and residue can build up in baskets, screens and approved brewing paths. A manufacturer may specify tablets, powder, a cleaning disc or a particular cycle. Backflushing is not a universal instruction for every espresso machine. Use it only where the design and manual call for it, with the correct accessories.
When a machine prompts for cleaning, complete the relevant process rather than repeatedly clearing the message. Prepare enough time, the correct container and the required supplies before starting. If a cycle stops unexpectedly, consult the model's troubleshooting instructions rather than improvising a button sequence from another machine. This is particularly important when a machine distinguishes cleaning from descaling through similar-looking indicator lights.
Descale according to model and water conditions
Mineral accumulation depends partly on the water and how the machine is used. There is no single calendar interval that fits every New Zealand home and every coffee machine. Use the manufacturer's schedule, settings and alerts, including any water-hardness setup. If unsure about local water characteristics, check information from the water supplier rather than assuming all filtered water is equivalent.
Use the specified descaler and dilution. Do not substitute vinegar, stronger mixtures or household cleaners unless the manufacturer explicitly permits them for that model. Follow the complete cycle, including rinsing and any filter-removal instructions. Never leave a cleaning solution in the machine simply because the first stage appears finished. Keep the machine unavailable for drink preparation until the full process is complete.
Breville the Dual Boiler Espresso Coffee Machine, Sea Salt (BES920SST)
Check the Breville Dual Boiler BES920 product hub and the BES920 Australia/New Zealand instruction book before cleaning or descaling. Match the instructions to your machine version. A larger machine can have different procedures and service considerations from a compact design. Confirm which tasks are owner maintenance and which require support.
How to descale a coffee machine: preparation and rinsing checklist
Use this checklist to organise the job. The exact controls, solution quantity, waiting periods and rinse volumes must come from your model's instructions. Descaling a capsule machine, a thermoblock espresso machine and a dual-boiler machine can involve different water paths and procedures.
- Identify the correct task. Read the alert and confirm whether the machine needs coffee-oil cleaning, milk-system cleaning or descaling. Find the model number on its rating label and open the matching manual before starting.
- Gather the supplies. Have the approved descaler, fresh water and a heat-resistant collection container of the specified capacity ready. Clear the bench and allow enough time to complete the whole programme, including every rinse.
- Prepare the machine. Follow the manual's instructions for emptying the tray and tank, removing capsules or brewing accessories, and removing a water filter where required. Follow any cooling instructions before handling parts. Never open internal pipework or improvise boiler-draining steps.
- Measure and run the prescribed programme. Mix only the stated amount of descaler and water. Select the dedicated descale procedure rather than repeatedly running ordinary coffee shots. Follow the model's prompts for each outlet, pause and refill; keep clear of hot water and steam.
- Complete the fresh-water rinses. Empty and rinse the tank where instructed, refill with fresh water and finish all specified rinse stages. Do not judge completion by water clarity or taste the discharge to check it. Keep collection containers positioned as directed throughout.
- Return the machine to service. Refit or replace the filter as instructed, complete any final setup and check that the programme has finished normally. Record the date and product used. If the alert persists or the cycle fails, use the manufacturer's troubleshooting advice before repeating a chemical treatment.
A practical coffee-machine maintenance schedule
This is a household planning guide. Your machine's care instructions take priority, especially for automatic milk systems, removable brew groups and water filters. Set a reminder to check maintenance needs rather than automatically adding chemicals on a fixed date.
| When | What to check or clean | Purpose |
|---|---|---|
| After making coffee | Remove spent coffee or used capsules and rinse the approved removable brewing accessories. | Prevent old grounds and residue building up. |
| After each milk drink | Clean milk-contact parts and carry out the specified wand purge or milk-system rinse. | Remove milk residue promptly. |
| Daily when used | Check the drip tray, waste container and water tank; empty, rinse and replenish as appropriate. | Keep the working area clean and spot leaks early. |
| Weekly review | Inspect baskets, accessible screens and removable parts. Perform only the deeper cleaning that the manual specifies. | Catch deposits and blocked openings before performance suffers. |
| At the cleaning prompt or specified interval | Run the approved coffee-oil cleaning procedure with the correct consumable. | Address brewing residue separately from mineral scale. |
| At the descale prompt or specified interval | Complete the model's descale and rinse programme, taking water-hardness settings into account. | Address mineral accumulation in the water system. |
| At the filter replacement interval | Fit and prepare the correct cartridge, then record the replacement date. | Maintain the intended water-treatment routine. |
Water filters do not remove every maintenance task
A filter may be part of the manufacturer's recommended water system, but its presence does not automatically eliminate descaling or coffee-oil cleaning. Check replacement intervals and any preparation required for a new cartridge. An old cartridge is not an indefinitely effective safeguard. Record when you fitted it and which type the machine requires.
Do not assume distilled, heavily treated or softened water is suitable for every espresso machine. Follow the specified water guidance because sensor operation, corrosion considerations and taste can vary with the design. If your water treatment changes, revisit the instructions. The aim is suitable water and consistent maintenance, not the most elaborate filtration arrangement you can install.
Recognise when maintenance is not the answer
Reduced flow, unusual taste or a warning light can have several causes. Check obvious items such as tank seating, the correct operating mode and clean accessible components. A blocked basket is different from mineral scale inside the machine. Treat observations as clues rather than proof of one fault, and avoid running repeated chemical cycles without a diagnosis.
Stop and seek support if there is electrical damage, persistent leaking, abnormal overheating or an unresolved malfunction. Keep a record of the model, alerts and last completed maintenance. When comparing replacement machines, include consumables and service access in the ownership cost. Clear care instructions and available support can be more useful than another headline feature.
De'Longhi Dedica Duo Cold Brew Coffee Machine Black (EC890BK)
Use the De’Longhi Dedica Duo EC890.BK support centre to find instructions for approved products, removable parts and rinse requirements. Do not assume the Breville routine applies. When choosing between machines, compare how easily you can complete the actual care steps after your normal drinks.
Related coffee guides and accessories
For help choosing a care routine that fits the type of machine you own, read our capsule, manual and automatic coffee machine comparison. Our coffee machine buying guide explains the wider range. Browse coffee machine accessories for relevant equipment and check the exact model compatibility before purchasing any cleaning product or filter.
Sources and further reading
Compare the relevant range before choosing:
Coffee Machines at Tech Supply Shed.
Frequently asked questions
How often should I descale?
Follow the exact machine's instructions and alerts, accounting for its water settings and usage. A universal monthly rule can be unnecessary for one setup and inadequate for another.
Can I use vinegar?
Only if the manufacturer expressly permits it for your model. Use the specified product and dilution rather than assuming a household substitute is harmless.
Are cleaning tablets and descaler the same?
No. They address different deposits and may be used in different cycles. Check the label and machine manual before adding either.
Do I need to rinse after descaling?
Complete every rinse stage specified by the manufacturer before making drinks. Do not shorten the process because the water looks clear.
Choose the right setup for your needs
Explore coffee machines at Tech Supply Shed, compare the exact model details and choose the option that fits your routine.
