Espresso runs through too fast and tastes sour — what should I do?

It's usually the grind size, not a defect: grind finer, check the dose on a scale (ratio 1:2, e.g. 18 g in / 36 g out) and change only one variable per shot. Taste decides: sour means finer, bitter means coarser.

Am I allowed to descale my espresso machine myself?

It depends on the brand — often no: La Marzocco does not provide for DIY descaling (water damage is not covered by the warranty), and Profitec advises against flow-through descaling. It's better to prevent scale with a water filter or treated water; a scaled-up machine belongs with service.

Water sprays out sideways from the portafilter — what should I do?

Clean the gasket rim and shower screen, lock the portafilter in more firmly. If that doesn't help, replace the brew group gasket and shower screen — a normal wear part, usually replaced every 6 to 12 months.

My machine no longer produces steam — what's the cause?

Usually the steam tip is clogged with milk residue: unscrew the tip, clear the holes, use a milk system cleaner, and purge and wipe the wand after every use. If the steam stays weak, scale is often the cause — then it's a service case.

The E61 brew group keeps dripping — is that bad?

Individual drops during heat-up are normal by design. Persistent dripping often disappears after backflushing with cleaner; otherwise the valve seals are due for replacement — that's workshop work.

The espresso machine no longer heats up — what can I do?

Test the outlet, insert the water tank correctly, let it cool unpowered for 30 minutes and restart. If it stays cold, it's a service case — often a triggered over-temperature protection after scale build-up or dry running. Never open the housing, electrics or boiler yourself.

Why shouldn't I remove the portafilter on the La Marzocco Leva X immediately after the shot?

Because residual pressure can still be present in the system on the Leva X after the shot — unlike pump machines, the pressure doesn't release automatically. Only remove the portafilter once the pressure gauge is back at zero; you can use the lever to lift the piston slightly to release the counter-pressure. Otherwise there is a risk of scalding.

Do I need to descale the La Marzocco Linea Micra regularly?

Not with a descaling agent — La Marzocco doesn't provide a procedure for that on the Micra. Instead, you drain the steam boiler every 1–2 months via the hot water spout and keep to the specified water values (hardness 70–100 ppm, pH 6.5–8.5). For noticeable scaling symptoms, that's a case for service, not for home remedies.

Can I replace the shower screen and group gasket on my Victoria Arduino E1 Prima myself?

Unlike most other machines in our hub: no. Victoria Arduino explicitly names the annual replacement of the shower screen and group gasket in the manual as a task for a qualified professional. Daily and weekly cleaning — backflushing, portafilter, soaking the shower screen — you naturally still do yourself.

My Profitec Pro 800 isn't pulling any crema — what's the cause?

Usually grind size, coffee age or dosing: grind finer and tamp more firmly, use freshly ground coffee, dose 7–9 g per cup, and check the shower screen for dirt.

The espresso on the Pro 800 barely runs through, or not at all — what should I do?

This usually points to a grind that's too fine or too much coffee in the basket. Adjust the grind coarser, tamp a little less firmly, and reduce the dose to 7–9 g per cup.

The Profitec Pro 800 won't switch on — what can I check?

Check the water level in the tank, the float, the tank/plumbed-in switch position, and that the tank is seated correctly. If it still won't start afterwards, the Profitec retailer can help further.

The portafilter on the Pro 800 drips after the shot — what helps?

Locking it in more firmly usually helps; if it stays the same, the group gasket is often worn and should be replaced by the retailer. Important: never remove the portafilter while there is still residual pressure in the piston.

Why is the first coffee on my Rocket Giotto or Mozzafiato too hot or burnt?

This is normal on heat exchanger machines (HX) once the boiler has been up to temperature for a while. Wait out the full heat-up time (approx. 20–30 minutes) and do a brief cooling flush before the shot. Dual boiler machines like the R58 don't need this.

What does the Cronometro display on my Rocket machine show me?

Rocket doesn't explain this publicly in detail — use the display only as a rough reference point between two shots, never as a target figure. Taste and the scale (weight/ratio) decide, not the clock. In the current catalogue, incidentally, the function is now just called Shot Timer.

What does error code E-099 mean on the Eversys Legacy+?

E-099 indicates a briefly interrupted communication between the display and the control unit. Switch the machine off at the main switch (not just the standby button), wait 10 seconds, and switch it back on. If the error persists, contact your Eversys service organisation.

My Eversys Legacy+ shows an error code E-XXX — what should I do?

For four common codes you can check yourself: E-000/E-001 means a bean hopper is missing, E-002 means the coffee grounds container is missing, E-099 indicates a brief communication fault (switch off and on again), and E-103 indicates a timeout while filling the steam boiler (check the water supply). For all other E-codes, Eversys recommends contacting the service organisation directly, since it could involve motor, heating or pressure sensor faults.

My Bezzera keeps dripping from the brew group — is that a defect?

Not necessarily: occasional drops during heat-up are normal by design on E61 groups. If backflushing with cleaner doesn't help and it drips constantly or heavily, the shower screen or group gasket is usually due for replacement — that's workshop work.

My Bezzera no longer heats up — what can I check myself?

Test the outlet, insert the water tank correctly, and let the machine cool unpowered for 30 minutes, then restart. If it stays cold, it's a service case — often a triggered over-temperature protection after scale build-up or dry running. Never open the housing or electrics yourself.

First Aid: Espresso Machines — Solve Problems Yourself

Q: Does the Profitec Pro 800 need electricity even though it's a lever machine?

Yes. The Pro 800 is a dipper system with an electric, PID-controlled copper boiler (1600 W) that assists the lever during brewing. Purely mechanical lever machines like the Flair or Superkop, by contrast, need no electricity or boiler at all — there, arm strength plus a gas spring alone supply the pressure.

← Back to the First Aid overview

Most «defects» aren't defects at all — in around 80% of cases it's a setting or a bit of care that you can fix yourself in a few minutes. Here are the most common problems with espresso machines, with safe steps according to manufacturer guidance. And if it really is the machine, we'll tell you honestly where the line is.

⚠️ Before you start: Unplug the machine, let it cool down, release pressure (open the steam valve) — only then get to work. We only show steps that the manufacturers themselves approve: cleaning, descaling (where permitted), replacing the gasket and shower screen. Electrics, boiler and pressure system are never something to do yourself — that's dangerous and can void the warranty. If in doubt: hands off and get in touch — we don't bite.

Straight to the problem: Runs too fast/too slow · Scaled up · Portafilter leaking · No steam · Tastes musty · E61 dripping · Pump rattling · Temperature fluctuating · Hand lever without pressure · Travel espresso · Not heating · Eversys (commercial) · La Marzocco Leva X · La Marzocco Micra · Victoria Arduino · Profitec Pro 800 · Rocket Cooling Flush/Cronometro · Bezzera

1. «My espresso runs through too fast and tastes sour — or only drips and tastes bitter»

This affects all brands — and is almost never a defect, but grind size and dose.

Try this first:

Base it on weight: ratio 1:2 — e.g. 18 g in, 36 g out, on the scale. We extract by weight, never by time — taste decides.
Tastes sour/thin: grind finer. Bitter/harsh: grind coarser.
Change only one variable per shot.
Weigh your dose — eyeballing it varies more than you'd think.
Check the shower screen for coffee residue and rinse it.

Source: La Marzocco Home — How to Dial In Your Grinder · Video: La Marzocco Home (official channel)

Stop line: Do not adjust pump pressure or the expansion valve.

Go deeper: Extraction Lab · Grinder Lab · Gear: Barista Scales

2. «The machine is scaled up — less water flow, takes forever to heat»

The classic Swiss issue: in many municipalities, hard water comes straight out of the tap.

Try this first:

Measure your water hardness (test strips) or look it up for your municipality.
Prevent rather than descale: a tank filter (e.g. Brita) or treated water — La Marzocco recommends ~90–150 ppm TDS.
La Marzocco Home: drain the steam boiler regularly (an approved routine).
Don't descale on your own: La Marzocco does not provide for DIY descaling — water damage is not covered by the warranty. Profitec also advises against flow-through descaling. A scaled-up machine = service case.

Sources: La Marzocco — Water for Home Espresso Machines · Profitec — Cleaning & Care

Stop line: Never pump descaling solution through the boiler or brew group. Never open the boiler.

Everything on water: Water & Descaling Guide · Gear: Brita · Apax Lab · Scaled up? Our Service

3. «Water sprays out sideways from the portafilter during the shot»

Try this first:

Clean the gasket rim and shower screen with the brush.
Lock the portafilter in more firmly and test again.
Still leaking: replace the brew group gasket and shower screen — La Marzocco recommends replacing every 6–12 months; Profitec names exactly this symptom as the signal to replace.
Insert the new gasket dry, tighten hand-tight.

Sources: Profitec — Cleaning & Care · La Marzocco — Tech Tips

Stop line: Do not disassemble the E61 group, and don't force stuck screws.

Matching gaskets & shower screens: La Marzocco · Rocket · Bezzera

4. «No steam, or too little — the milk foam doesn't work out»

Try this first:

Purge the wand briefly right after every use and wipe it down while damp.
Unscrew the tip and clear the holes with a needle and warm water.
Use a milk system cleaner.
Single boiler: really wait out the switch-over and heat-up time.
Still weak? Check your water hardness (problem 2) — scale in the steam path is a service case.

Source: La Marzocco — How To Properly Clean Your Espresso Machine

Stop line: The steam valve, anti-vacuum valve and safety valve are off-limits.

Practise your foam technique: Milk Foam Simulator · Latte Art Trainer

5. «The espresso suddenly tastes musty or rancid — despite good beans»

Almost always: coffee oil build-up in the group and shower screen.

Try this first:

Backflush with a blind filter and coffee oil remover — at home about every 50 shots, daily in commercial use (each time with a cleaning agent). Only on machines with a 3-way valve (check the manufacturer's instructions)!
Several short cycles until the foam runs white, then rinse thoroughly with water.
Soak the baskets and portafilter in cleaning solution.
Remove the shower screen and clean it.
Victoria Arduino: run the guided cleaning cycle according to the Quick Guide.

Sources: La Marzocco — Clean Guide · Victoria Arduino — E1 Prima Quick Guide (PDF) · Urnex — How to Backflush (Video)

Stop line: No citric acid or household remedies through the group.

Gear: Blind filter & brushes from the cleaning collection · Oil remover: Urnex Cafiza (industry standard for backflushing)

6. «The E61 brew group keeps dripping»

From our day-to-day service experience — the manufacturers barely document this publicly:

Put it in context: single drops during the heat-up phase are normal by design (the expansion valve is working).
Backflush with cleaner (problem 5) — this often makes the dripping disappear.
Clean or replace the shower screen and gasket.
Still dripping continuously: a group overhaul at the service centre — that's workshop work.

Stop line: Do not adjust or open the expansion/relief valve yourself.

Gear: Blind filter from the cleaning collection · Oil remover: Urnex Cafiza · Request service

7. «The pump rattles loudly, but no water comes out»

Usually air in the system — typical after the tank has run dry:

Fill the tank and seat it correctly, check the intake hose for kinks.
Draw water through the group without a portafilter until it runs free of bubbles (bleed according to the instruction manual).
Briefly open the hot water or steam valve — this helps with priming.
Clean the tank strainer/inlet filter.
If the pump stays dry-loud: switch off immediately (pump protection) and contact service.

Stop line: Do not remove the pump or wiring, do not adjust pump pressure, never let it run dry.

8. «The first shot is scalding hot — the temperature fluctuates» (heat exchanger)

Cooling flush: before the first shot, briefly run water through the group until the spitting and steaming stop.
Observe the heat-up time — an E61 group needs about 20–30 minutes to warm through.
PID models: keep the brew temperature within the recommended window of 88–95 °C (Profitec factory setting).
Still consistently off? Service.

Source: Profitec — Service/FAQ

Stop line: Do not adjust the pressure switch or thermostat.

Understand the technology: Pressure Profiling Simulator

9. «Hand lever machines (Flair, Superkop, Aram): no pressure — or water shoots out sideways»

Grind finer — according to Flair, the most common fix.
Increase the dose, or use the low-flow basket on the Flair 58.
A genuine leak: check the O-rings and piston seal and replace exactly according to the manufacturer's instructions (Superkop PDFs, Flair spare parts).
Maintain seals with food-safe grease.
Aram: compare assembly and process with the official manual.

Sources: Flair Support — Unable to hit pressure · Superkop — Manuals · Aram — Manual · Videos: Flair Tutorials

Stop line: Only service the Superkop gas spring exactly according to the manufacturer's PDF; do not open the pressure gauge.

Spare parts: Flair · Superkop · Aram

10. «Wacaco on the go: barely any pressure, thin coffee, leaking»

Check your grind size: fine like table salt — too coarse gives no pressure, too fine blocks it. Nanopresso: 8 g dose.
Use hot water (90–96 °C) and preheat the device.
Tighten the filter basket firmly, keep the dose exact.
Pump steadily, about one pump stroke per second.
Rinse after every use; deep-clean the gasket monthly, the metal mesh every 6–12 months.

Sources: Wacaco — FAQ · Wacaco — Manuals · Video: Wacaco — Picopresso Cleaning (official channel)

Stop line: Do not disassemble the pump mechanism; never open a hot device under pressure.

Gear: Outdoor & Travel Equipment

11. «The machine won't heat at all any more — stays completely cold»

Self-help is deliberately kept short here — this is mostly a service case:

Test the outlet and fuse with another device.
Insert the water tank correctly — many machines block heating without a tank signal.
Let it cool unpowered for 30 minutes, then attempt a restart.
No improvement? Service. A common cause is a triggered over-temperature protection after scale build-up or dry running — have the cause fixed at the same time.

Absolute limit: Opening the housing, electrics, heating element, thermostat reset, boiler — all workshop work only.

Request service & repairs

12. «The Eversys automatic machine shows a cleaning prompt or an error» (commercial)

Run the guided cleaning cycles on the display (tabs/milk cleaner as specified).
Remove the steam nozzle monthly and clean it with mild soap and a brush (official Eversys instructions).
Note the error code and contact us as your service partner.

Error code overview: If your display shows an error code with "E-", you can often check these four situations yourself before contacting service:

Code	Meaning	What you can do yourself
E-000 / E-001	Bean hopper 1 or 2 is missing or not seated correctly	Remove the bean hopper and reseat it cleanly until it sits correctly.
E-002	Coffee grounds container is missing	Insert the coffee grounds container and leave it in place during the shot as well.
E-099	Communication between the display and the control unit was briefly interrupted	Switch the machine off at the main switch (not just the standby button), wait 10 seconds, then switch it back on.
E-103	Timeout while filling the steam boiler	Check the tap and water supply to the machine to make sure enough water is arriving.

For all other E-codes (among others in the range E-003 to E-107, e.g. motor, heating or pressure sensor faults), Eversys itself advises not to intervene yourself any further, but to contact the service organisation directly.

Source: Eversys e-support — Clean the steam nozzle · Eversys e-support — Error code overview

Stop line: Anything beyond the guided cleaning (group removal, boiler, electrics) belongs to the technician.

La Marzocco Leva X

Mechanically, the Leva X is a different animal from the other espresso machines in our hub: brew pressure doesn't come from a pump, but from a spring that you tension via the lever and release under control. A digital display shows the pressure/time curve of your shot live. Precisely because of this different mechanism, its own safety rules apply here — read them through carefully before you get to work yourself.

13. «There's a loud bang when I let go of the lever during backflushing — is that bad?»

Yes, that's an operating mistake you should avoid from now on: the lever must never be released without counter-pressure during backflushing — it must be guided under control until the water runs clear.

Guide the lever back slowly and by hand during backflushing, never just let it go.
Only release it once you no longer feel any counter-pressure on the lever.
Repeat the process until the water running through is clear.

Source: La Marzocco — Leva X 1GR Manual

Stop line: The manufacturer explicitly warns against releasing the lever during backflushing — this can cause structural damage to the machine. If this has already happened to you, or the lever has felt different since, contact us instead of continuing to test it.

14. «The lever is hard to pull — is my spring broken?»

A noticeable amount of force is fundamentally part of a spring-lever machine — according to La Marzocco, the Leva X needs around 40% less force than other lever machines on the market, but resistance still remains part of the principle.

Compare the feel with your first impression at handover or first use — slight variation from shot to shot is normal, since you're building the pressure yourself.
For a clear, sustained worsening, don't adjust the spring or preload yourself.

Source: La Marzocco — Leva X1 product page

Stop line: There is currently no manufacturer self-adjustment instruction confirmed by us for the spring tension of the Leva X 1GR. Please do not tinker with the spring on suspicion — contact us or La Marzocco service directly.

15. «The shot runs unevenly, or the coffee suddenly tastes different»

Usually caused by a dirty diffuser screen or a dirty underside of the piston — on the Leva X, this cleaning is recommended daily.

Remove the diffuser screen with the tool provided.
Clean with coffee cleaning powder and rinse thoroughly.
When reinstalling, make sure the spring clicks audibly into place.
Then operate the group several times to flush it through.

Source: La Marzocco — Leva X 1GR Manual

Stop line: If the spring doesn't click audibly into place on reinstall, or the diffuser screen won't mount cleanly, do not force it — contact us.

16. «The portafilter is hard or dangerous to remove after the shot»

This is usually residual pressure in the system — the Leva X releases pressure differently from our pump machines, and there is no automatic pressure release.

Never remove the portafilter while the pressure gauge is still above zero.
Use the lever to lift the piston slightly to release the counter-pressure.
Only remove the portafilter afterwards.

Source: La Marzocco — Leva X 1GR Manual

Stop line: This is a hard safety limit, not a judgement call: removing the portafilter under residual pressure can cause scalding. If in doubt, wait until the pressure gauge is truly at zero.

17. «The boiler pressure rises sharply while heating up — is that normal?»

Yes, up to a certain threshold this is normal heat-up behaviour: the Leva X's coffee boiler is limited to a maximum of 6 bar via an expansion valve behind the drip tray.

Wait out the heat-up phase without intervening.
Keep an eye on the pressure gauge, but don't readjust it yourself.

Source: La Marzocco — Leva X 1GR Manual

Stop line: Water as hot as up to 93°C is present at the expansion valve — adjustment or disassembly is exclusively a job for a professional, do not open it yourself.

La Marzocco Linea Micra

The Linea Micra is our most compact La Marzocco dual boiler for home use and is controlled via an app — you set the steam and brew water temperature there. From the factory it comes with a water reservoir, and on request also with a plumbed-in connection (its own kit, not interchangeable with the kit for the Linea Mini/GS3).

18. «The steam wand delivers hardly any pressure, the milk foam doesn't work out»

This is usually caused by residue in the wand or the steam pressure setting in the app.

Clean the steam wand with a damp cloth immediately after every use.
Check the steam pressure in the app — factory setting is around 1.8 bar, adjustable in the range 1.3–2 bar.

Source: La Marzocco — Linea Micra Manual

Stop line: Do not touch the steam wand for at least 40 seconds after steaming, and do not open the steam boiler yourself.

19. «The pressure gauge shows up to 12 bar while heating up — is something faulty?»

No: this is normal heat-up behaviour for the Micra. The actual shot is pulled at around 9 bar.

Wait out the heat-up phase without intervening.
During the actual shot, check whether the pressure settles into the usual range around 9 bar.

Source: La Marzocco — Linea Micra Manual

Stop line: The pressure gauge and steam boiler are not something to tinker with yourself. If the pressure consistently seems different from usual, talk to us instead of adjusting the machine.

20. «The water from the tank tastes odd»

This is almost always a maintenance issue, not a defect: the reservoir should be refilled fresh daily.

Change the water in the reservoir daily (factory guidance).
Clean the reservoir weekly.

Source: La Marzocco — Linea Micra Manual

Stop line: If the taste stays odd despite daily water changes and a clean reservoir, it could be down to local water quality or the machine — better to contact us than to keep experimenting on suspicion.

21. «How do I maintain or descale the Micra's steam boiler?»

Through regular draining rather than a descaling agent — La Marzocco does not provide a dedicated DIY descaling programme for the home machines.

Every 1–2 months: switch off the machine, open the hot water spout to drain it.
Then refill the reservoir fresh and restart the machine.
Stick to the water specification: hardness 70–100 ppm, pH 6.5–8.5, chloride ≤30 mg/l, chlorine 0–0.1 ppm.

Source: La Marzocco — Tech Tips · La Marzocco — Linea Micra Manual

Stop line: Do not put any descaling agent into the boiler or group — this is not documented as manufacturer-approved for this model. For noticeable scaling symptoms (e.g. weak steam despite a clean wand), contact us instead of descaling yourself.

22. «The app no longer connects, or asks for a firmware update»

Usually the normal pairing/update logic in the app is enough — intervening on the machine itself is practically never necessary.

Only carry out the initial pairing via the app; after that it reconnects automatically.
Carry out the firmware update as indicated by the app prompt.
A green line in the app indicates the local connection is fine.

Source: La Marzocco — Firmware update notice · La Marzocco — Linea Micra Manual

Stop line: If an update gets stuck, don't keep trying on your own (e.g. reflashing repeatedly) — write to support@lamarzocco.com or to us.

Victoria Arduino E1 Prima / EXP / Pro

The E1 Prima family comes in three tiers: E1 Prima (operated via physical buttons), E1 Prima EXP (same base, additionally Pure Brew capable) and E1 Prima Pro (touch display, T3 Genius, VIS scale, Pure Brew conical filter, steam-by-wire). All three run on the NEO Engine, a multi-boiler system that doesn't keep large amounts of water hot permanently, but heats specifically only what you currently need. The following steps apply to all three models unless we explicitly point out an exception.

23. «The boiler doesn't fill, the display is flashing»

This is usually a signal, not a direct defect — most often a simple restart of the auto-fill function helps.

Switch the machine off and back on so the auto-fill function restarts.
Check the water supply or tank — is there enough water and is the supply open?
Watch for any visible leaks around the machine.

Source: Victoria Arduino / Simonelli Group USA — E1 Prima Error Codes

Stop line: The water stop valve, pump or level probe are pure service work — do not disassemble them yourself, contact us or the technician.

24. «The machine doesn't reach its target temperature»

The NEO Engine specifically heats only the amount of water you currently need; on the Pro, T3 Genius additionally regulates the steam boiler, coffee boiler and brew group independently of each other. Consistently missing the target temperature is not normal behaviour for any of the models — it's a signal.

Switch the machine off and back on, let it restart fully.
Check the power supply and the fuse.

Source: Victoria Arduino / Simonelli Group USA — E1 Prima Manual & Error Codes · Victoria Arduino — NEO Engine technology

Stop line: The thermal fuse, heating element or temperature sensor are exclusively a technician's job — do not measure or open them yourself.

25. «Bluetooth or the app won't connect»

Usually a simple restart or a parameter reset in the app is enough — the machine only allows one active app connection at a time anyway.

Switch the machine off and back on.
Check whether another device is already connected — only one connection can exist at a time.
Reset the parameters in the app menu.

Source: Victoria Arduino / Simonelli Group USA — E1 Prima Manual · Victoria Arduino — "App" video (official channel)

Stop line: Firmware or circuit board replacement is technician work — don't attempt it yourself.

26. «The coffee tastes stale or musty, the group looks dirty»

This is a maintenance issue, not a defect — Victoria Arduino recommends a fixed cleaning schedule for the group, portafilter and shower screen.

Daily: run the automatic cleaning cycle with a blind filter and coffee machine powder cleaner.
Weekly: disassemble and clean the portafilter and basket.
Weekly: soak the shower screen and diffuser for around 30 minutes.

Source: Victoria Arduino / Simonelli Group USA — E1 Prima Manual · Victoria Arduino — "How to clean your E1 Prima" video (official channel)

Stop line: An important difference from our other machines in the hub: you should NOT replace the shower screen and group gasket yourself on the Victoria Arduino once a year — the manufacturer explicitly names this as a task for a qualified professional. Please contact us or service for this.

27. «The Pure Brew filter clogs or is hard to clean»

Pure Brew is the low-pressure brewing method of the E1 Prima EXP and Pro: pulsed water delivery through a patented conical filter, selectable in three profiles (Light/Medium/Dark). The manufacturer names a brew time of under 3 minutes as a guideline — but as with any extraction, taste decides, the time is only a reference point. The filter itself (20 g capacity according to the manual; also available from us as a 30 g variant) needs brief care after every use.

Empty the conical filter after every use.
Carefully pry it out from the top — never press it against the work surface.
Clean it regularly; the filter is dishwasher-safe.

Source: Victoria Arduino / Simonelli Group USA — E1 Prima Pro Manual · Victoria Arduino — Pure Brew · Victoria Arduino — "PureBrew Coffee with E1 Prima EXP" video (official channel)

Stop line: The manufacturer does not name a fixed replacement interval for the conical filter — with visible wear, or if Pure Brew changes noticeably despite a clean filter, talk to us instead of guessing.

28. «The machine is scaling up — how do I descale it?»

Not with a descaler at all: Victoria Arduino does not prescribe acid descaling by users for the E1 Prima family, relying instead on water treatment that prevents scale build-up in the first place.

A water softener is mandatory, not an accessory — it prevents scale build-up rather than treating it afterwards.
Stick to the water values: total hardness 50–60 ppm, TDS 50–250 ppm, pH 6.0–8.0, chlorine under 0.5 mg/l.
Regenerate the softener's ion resin regularly with table salt.

Source: Victoria Arduino / Simonelli Group USA — E1 Prima & E1 Prima Pro Manual

Stop line: Do not put any descaling agent into the boiler or brew group — this is not provided for according to the manual. According to the manual, deviating from the water values also voids the warranty. For scaling symptoms: service instead of self-experimentation.

29. «The app shows a maintenance or battery warning»

The maintenance counter is a reminder, not an automatic service — it only wants to be reset after maintenance has actually been carried out.

Carry out the due maintenance (cleaning/inspection) as described in the manual.
Only reset the counter afterwards in the app menu — resetting without carrying out maintenance just hides the reminder.

Source: Victoria Arduino / Simonelli Group USA — E1 Prima Manual

Stop line: The internal CR1220 backup battery is not described in the manual as a step for end customers to replace. Do not open it yourself on a battery warning — contact us or service.

Profitec Pro 800

30. «Does the Pro 800 need power? I thought lever machines didn't need any»

Yes — the Pro 800 is a so-called dipper system: an electric, PID-controlled copper boiler (1600 W, approx. 3.5 l) assists the lever during brewing. On purely mechanical lever machines like the Flair or Superkop, on the other hand, all the force comes entirely from your arm and the gas spring, with no electricity and no boiler at all.

The copper boiler heats electrically and under PID control.
The boiler pressure (approx. 1.0–1.25 bar, water inlet approx. 2–3 bar) is steam/hot water pressure — not the brew pressure.
Pressing the lever down: the boiler pressure lets hot water through for pre-infusion into the brew group.
Lift the lever slightly and release it gently: it returns to the neutral position slowly on its own while the espresso runs through.