Daily Coffee Machine Maintenance: A Checklist for Bars

A professional espresso machine is a significant investment. Whether it is a mid-range model or a top-of-the-range machine like the Prima Musa Apollo Multiboiler, its longevity, performance, and the quality of every cup it produces depend critically on how it is cared for every day.

Maintenance is not a waste of time: it is a professional routine that protects your investment, guarantees product consistency, and reduces technical service costs over time.

In this article you will find a complete checklist — divided by frequency — for coffee machine maintenance in your bar.

Why Maintenance Matters So Much

Every day, a commercial espresso machine works with water, coffee, steam, and high temperatures. Coffee oils deposit in group heads, scale accumulates in boilers and hydraulic circuits, and milk residues solidify in steam wands. Left unremoved, these deposits compromise:

Espresso quality — bitter, rancid, or unbalanced flavours are often the sign of a dirty machine
Thermal stability — scale deposits insulate heating elements, causing overheating or unstable temperatures
Component lifespan — gaskets, shower screens, and solenoid valves deteriorate more quickly when deposits are present
Venue hygiene — an uncleaned machine is a health risk, with potential bacterial growth in steam wands

✅ DAILY CHECKLIST — Morning (Opening)

Before starting service:

Switch on the machine with sufficient lead time to reach operating temperature (follow manufacturer guidance — typically 20–30 minutes)
Run 2–3 blank shots of hot water through each group to flush circuits after overnight rest
Visually check the water reservoir level or confirm correct connection to the water supply
Inspect portafilter gaskets visually: cracks or deformation should be flagged for replacement
Confirm the cup warming tray is functioning
Check the pressure gauge: it should be in the green zone (typically 8–10 bar during extraction)
Warm portafilters by inserting them into groups without coffee for at least 5 minutes before first service

✅ DAILY CHECKLIST — During Service

Clean the portafilter after every extraction: knock it out, rinse, and dry before reuse
Wipe the group head shower screen with a brush or blank shot between services
Clean the steam wand immediately after every use: wipe with a damp cloth and purge briefly to expel internal milk residues
Never allow milk to dry on the wand: dried casein residues are extremely difficult to remove and constitute a hygiene risk
Monitor espresso quality throughout service: changes in extraction time or crema appearance may signal temperature, pressure, or grind issues

✅ DAILY CHECKLIST — Evening (Closing)

This is the most important maintenance phase of the day.

Group head cleaning (backflush):

Insert the blind filter (blank basket) with 1–2 g of dedicated espresso machine cleaner (e.g. Cafiza, Pulycaff, or equivalent)
Run the backflush cycle: 5–6 cycles of 10 seconds of extraction followed by 5 seconds of release
Repeat with a clean blind filter and no detergent to rinse thoroughly
Run 2–3 blank shots through each group to eliminate all detergent residue
Remove and rinse shower screens under running water; brush if needed
Remove portafilters and clean baskets with a dedicated brush

Drip tray and work surface:

Empty and wash the drip tray with warm water and mild detergent
Wipe the work surface and external machine body with a slightly damp microfibre cloth
Never use abrasive products or rough sponges on stainless steel surfaces

Steam wands:

Remove the steam tip (if detachable) and soak in cleaning solution for at least 15 minutes
Rinse thoroughly and reattach
Purge a brief burst of steam to confirm all jets are clear

Shutdown:

Switch off the machine following the manufacturer’s recommended procedure
On some machines, leaving portafilters inserted in the groups overnight is recommended to keep the group warm and protect gaskets

✅ WEEKLY CHECKLIST

Deep shower screen cleaning: remove screens and soak in detergent solution for 30 minutes, then brush and rinse
Water filter check: inspect the descaling filter; if the machine has a monitoring system, check the parameters
Coffee grounds drawer (if applicable): empty, wash, and dry thoroughly
Portafilter gasket inspection: check elasticity and integrity; a hardened or cracked gasket must be replaced immediately
Extraction pressure check: a pressure drop may indicate a clogged filter or pump issue
Grinder cleaning: empty the doser, brush the burrs, and remove stale coffee residues

✅ MONTHLY CHECKLIST

Descaling (if not automatic): follow the manufacturer’s protocol using certified products. Frequency depends on local water hardness — in hard water areas, descaling may be needed every 2–3 weeks
Water filter replacement: according to the filter or machine manufacturer’s guidance
Full portafilter inspection: check basket condition; replace deformed or blocked baskets
Gasket lubrication: some machines require light lubrication of gaskets with certified food-grade grease
Hydraulic connection check: visual inspection for any leaks or drips
Schedule a service technician visit — many suppliers, including Prima Musa Srl, offer preventive maintenance contracts

The Right Cleaning Products: What to Use (and What to Avoid)

Always use:

Dedicated professional espresso machine cleaners (Cafiza, Pulycaff, Urnex, or equivalents)
Microfibre cloths for external surfaces
Soft-bristle brushes for shower screens and portafilters
Descaling products certified by the machine manufacturer

Never use:

Common washing-up liquid in internal circuits (can leave foaming residues)
Abrasive products or steel wool on stainless steel surfaces
Common vinegar as a descaler (can damage rubber gaskets and internal metals)
Products not certified for food-contact use

What Does Neglecting Maintenance Actually Cost?

An emergency technical call-out for advanced scale removal or replacement of components damaged by poor maintenance can cost between €300 and €1,500 — not counting machine downtime and the revenue lost during repairs.

Rigorous daily maintenance, on the other hand, has virtually zero cost in terms of products and requires no more than 15–20 minutes of staff time per day. The calculation is straightforward.

Conclusion

Your espresso machine is the heart of your bar. Looking after it every day is not a matter of perfectionism: it is a professional and business decision. A well-structured maintenance routine translates into better coffee, more satisfied customers, fewer breakdowns, and a machine that lasts for years.

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Daily Coffee Machine Maintenance: A Checklist for Bars