Commercial Coffee Machine Preventative Maintenance | CCS
Reduce breakdowns and improve coffee quality with this practical daily, monthly, quarterly and annual commercial coffee machine maintenance guide.
Your commercial coffee machine and grinder are at the heart of your café.
They are usually among the first pieces of equipment switched on in the morning and the last to be cleaned at night. During a busy service, they may produce hundreds of coffees while operating under constant heat, pressure and demand.
We often compare a commercial coffee machine to a work vehicle. You wouldn’t expect a delivery van to run every day without checking the tyres, changing the oil or booking an occasional service. Your coffee equipment is no different.
Regular cleaning and preventative maintenance can improve coffee consistency, reduce unexpected breakdowns and help extend the working life of your equipment. More importantly, it gives you a chance to identify small issues before they become expensive problems—or bring your coffee service to a complete stop.
The correct maintenance schedule will depend on your machine, coffee volume, water quality, operating hours and manufacturer recommendations. A busy café producing 20 kilograms of coffee each week will naturally require more attention than a small restaurant making a few dozen coffees per day.
Always check your equipment manual and speak with your coffee technician about the right maintenance schedule for your business.
Start with the manufacturer’s instructions
Before removing covers, replacing components or attempting internal maintenance, read the manufacturer’s cleaning and maintenance instructions.
Most commercial espresso machine manuals explain the correct procedure for:
- Backflushing the group heads
- Cleaning group handles and filter baskets
- Purging and cleaning steam wands
- Running automatic cleaning cycles
- Cleaning milk systems
- Replacing water filters
- Performing basic operator maintenance
Some maintenance jobs are suitable for trained café staff. Others involve electricity, high temperatures, pressurised boilers and internal components and should only be handled by a qualified coffee machine technician.
When in doubt, stop and contact Complete Cafe Services. Guessing your way around the inside of a commercial coffee machine is rarely the money-saving exercise people hope it will be.
Daily commercial coffee machine maintenance
Good preventative maintenance starts with the jobs completed by your baristas every day.
Daily cleaning removes coffee oils, milk residue and loose coffee grounds before they have time to harden, restrict water flow or affect flavour.
Backflush the group heads
Commercial espresso machines fitted with three-way solenoid valves generally require regular backflushing. Follow the machine manufacturer’s instructions and use the correct dose of an approved espresso machine cleaner such as Cafetto.
For busy commercial machines, detergent backflushing may be required daily. Follow the instructions supplied with the cleaning product, including the recommended cleaning, rinsing and group-head flushing cycles.
After completing the cleaning cycle, brew and discard an espresso from each group before serving customers. This helps remove any remaining cleaner and re-seasons the group head with coffee oils.
You can find more information in our guide to cleaning your coffee machine or browse our full range of coffee machine cleaning products.
Always rinse the machine thoroughly after using cleaning powder. Cleaner left inside the group can affect the taste of the coffee and should never be served to a customer.
Clean group handles and filter baskets
Knock out used coffee immediately rather than leaving wet coffee sitting inside the basket.
At the end of service:
- Remove the filter baskets from the group handles
- Rinse away loose coffee grounds
- Soak the appropriate metal components in hot water with the recommended dose of Cafetto
- Keep plastic, timber and rubber handle sections out of the cleaning solution
- Rinse every component thoroughly before reassembling
Coffee oils can collect in the holes of the filter basket, underneath the basket and inside the group-handle spouts. Even when the front of the handle looks clean, there can still be plenty happening underneath.
Brush the group heads
Use a proper group-head cleaning brush to remove coffee grounds from around the shower screen and group seal.
Coffee trapped around the seal can prevent the group handle from locking in correctly. Over time, this may contribute to leaking around the group head and premature wear of the seal.
Flush the group briefly after brushing to wash away loosened coffee grounds.
Purge and wipe steam wands after every use
Steam wands should be wiped immediately after texturing milk and purged before and after each use.
Milk left on a steam wand can bake onto the hot stainless steel. Milk can also be drawn into the steam tip, particularly when the wand is not purged correctly.
Use a dedicated damp cloth for the steam wand—never the same cloth used to wipe benches, group handles or coffee grounds.
At the end of the day, inspect the steam-tip holes and clean them using the correct steam-tip brush or cleaning tool.
Milk components and automatic milk systems should be cleaned using the appropriate Cafetto milk-system cleaner and the procedure specified by the machine manufacturer.
For automatic machines, read our guide to milk-line cleaning for office coffee machines.
Empty and clean the drip tray
Remove and wash the drip tray before it becomes an archaeological dig through several weeks of coffee grounds.
Check that the drain is flowing freely and that water is not pooling underneath the machine. Slow drainage, unpleasant smells or water backing up into the tray may indicate a partially blocked drain hose or waste line.
Never push large amounts of coffee grounds down the drain. They have an extraordinary talent for becoming someone else’s expensive plumbing problem.
Clean the grinder chute
Brush loose coffee grounds from the grinder chute and dosing area every day.
Coffee left inside the chute can become stale and oily. It may also contribute to clumping, inconsistent dosing and restricted coffee flow.
Avoid poking metal objects into the grinder while it is connected to power. Switch the grinder off and isolate it before carrying out any cleaning near moving components.
Weekly preventative maintenance
Weekly maintenance provides a more thorough clean than the quick jobs completed during daily service.
Deep-clean the group handles
Remove the filter baskets, inspect their undersides and clean inside the group-handle spouts.
Soak the appropriate metal components in Cafetto espresso machine cleaner, following the product instructions. Rinse everything thoroughly before returning it to service.
Check for:
- Blocked basket holes
- Loose or damaged spouts
- Worn retaining springs
- Bent filter baskets
- Cracks in the handle
- Excessive movement when the handle is locked into the group
Clean the grinder
Empty the grinder hopper and remove loose beans and coffee grounds. Use a brush and suitable vacuum to clean accessible areas around the hopper throat and grinder chute.
A dedicated grinder cleaner from Cafetto can help remove stale coffee residue and oils from the grinder burrs. The required cleaning frequency will depend on coffee volume and roast style, as darker and oilier coffees may leave more residue.
Never wash grinder burrs with water.
The hopper can generally be washed separately using warm water and mild detergent, but it must be completely dry before being returned to the grinder. Moisture inside a grinder and coffee beans are not mates.
Clean automatic coffee machines
Automatic and bean-to-cup machines should complete their programmed cleaning cycles at the intervals specified by the manufacturer.
Use the correct cleaning tablet size and formulation for the machine. Suitable cleaning tablets from Cafetto are designed to dissolve during automatic cleaning cycles and remove accumulated coffee oils and residue.
Do not assume that every cleaning tablet is suitable for every automatic machine. Tablet size, weight and formulation can vary, so confirm compatibility before use.
Monthly commercial equipment maintenance
Monthly checks are about identifying changes before they become equipment failures.
Inspect your water filtration system
Water makes up most of an espresso, but it also travels through almost every important part of your coffee machine.
Incorrect water treatment can contribute to scale, corrosion, restricted flow and inconsistent coffee. A standard drinking-water filter may improve taste without providing the hardness or scale reduction required by a commercial coffee machine.
Each month:
- Check the installation date of the filter
- Look for reduced water flow
- Inspect the filter head and hoses for leaks
- Confirm the filter is correctly sized for your coffee volume
- Record approximate water usage where possible
- Check that bypass settings remain suitable for the local water supply and machine
Filter replacement should be based on capacity, water conditions and manufacturer recommendations—not simply whether the filter has reached its first birthday.
Learn more about water filtration for coffee machines and how correct filtration may help reduce scale-related problems.
Inspect group seals and shower screens
Look for water leaking around the group handle during extraction.
A leaking group may be caused by coffee grounds around the seal, an incorrectly fitted handle, an overfilled basket or a worn group-head gasket.
Remove and inspect the shower screens where the manufacturer allows operator removal. Blocked or damaged shower screens can affect water distribution and extraction consistency.
Check for leaks
Inspect underneath and behind the machine for signs of water.
Small leaks can travel along hoses, frames and panels before reaching the bench, meaning the visible drip may not be directly below the failed component.
Look for:
- Damp cabinetry
- Water marks
- Mineral deposits
- Hissing sounds
- Dripping steam valves
- Water underneath the machine
- Pumps operating when no coffee is being made
A small leak left unattended can damage electrical components, cabinetry and surrounding equipment.
Clean ventilation openings
Check the machine and grinder ventilation openings for dust, coffee grounds and other obstructions.
Equipment needs airflow to manage heat. Do not stack cups, cloths, coffee bags or takeaway packaging against ventilation areas.
Quarterly commercial coffee machine maintenance
Quarterly maintenance should be adjusted to suit the operating volume of the venue.
A high-volume café may need group seals and shower screens replaced more frequently, while a low-volume venue may not require replacement every three months. Inspection is more important than blindly replacing parts according to the calendar.
Quarterly checks may include:
- Inspecting or replacing group-head seals
- Inspecting or replacing shower screens
- Cleaning underneath the shower screens
- Inspecting steam tips and steam-wand movement
- Checking the group-handle locking position
- Deep-cleaning the grinder burr chamber
- Checking grinder calibration and dose consistency
- Inspecting drain hoses and water connections
- Reviewing water-filter usage and capacity
- Checking for unusual pump or solenoid noises
Grinder burr chambers collect extremely fine coffee particles in areas that normal daily brushing cannot reach. A technician can safely dismantle and deep-clean the chamber, inspect the burr condition and recalibrate the grinder if required.
Six-monthly technician inspection
For high-volume cafés, restaurants and venues where coffee service is essential, a six-monthly technician inspection can be worthwhile.
This is particularly valuable when the equipment operates seven days per week or when an unexpected breakdown would result in significant lost sales.
Depending on the machine and its condition, a technician may:
- Inspect steam valves and replace worn seals
- Check pump and boiler pressure
- Verify brewing temperature
- Test volumetric programming
- Inspect flowmeters and solenoid valves
- Check for internal leaks
- Inspect electrical connections and contactors
- Examine water-filter performance
- Check grinder burr condition and calibration
- Identify components approaching the end of their service life
Not every component will need replacement at every visit. The purpose is to inspect, measure and plan rather than waiting for something to fail during the Saturday-morning rush.
Annual commercial coffee machine service
Even a well-cleaned commercial coffee machine should receive a professional service.
Cleaning removes the residue your baristas can access. Servicing allows a technician to inspect the internal mechanical, electrical and hydraulic components that keep the machine operating safely and consistently.
An annual service may include:
- Inspection of boilers and internal pipework
- Assessment of scale and corrosion
- Pump-pressure and brew-pressure testing
- Steam-pressure and temperature checks
- Inspection of safety and anti-vacuum valves
- Inspection of heating elements and electrical components
- Testing of solenoid valves and flowmeters
- Replacement of worn seals, gaskets and O-rings
- Inspection of water and drain connections
- Grinder burr inspection or replacement
- Grinder calibration
- Checking programmed coffee volumes
- General operational and safety testing
Regular servicing can help identify developing problems, reduce unplanned downtime and extend the usable life of the machine. It can also help maintain coffee quality by ensuring the equipment is operating at the correct pressure, temperature and flow rate.
Read more about why you should get your coffee machine serviced each year.
Do grinder burrs need to be replaced every year?
Not necessarily.
Grinder burr life depends on:
- The burr manufacturer and material
- Burr diameter and design
- The type of grinder
- The total kilograms of coffee ground
- Roast style
- Foreign objects entering the grinder
- Cleaning and maintenance
- The required level of grind consistency
Some heavily used café grinders may require burr replacement within a year. Other grinders may operate much longer before the burrs become worn.
Common signs of worn grinder burrs include:
- Increasingly inconsistent particle size
- Slower grinding
- Needing to adjust the grinder much finer than usual
- Excessive clumping
- Increased heat
- Inconsistent shot times
- Reduced clarity or flavour
- The grinder motor working harder than expected
A technician can inspect the burr cutting surfaces and compare the grinder’s coffee throughput with the manufacturer’s recommended burr life.
Signs your commercial coffee equipment needs attention
Don’t wait for the machine to stop completely.
Book an inspection when you notice:
- Water leaking around a group handle
- Weak or inconsistent steam
- Steam wands dripping when closed
- Unstable boiler pressure
- Coffee volumes changing without explanation
- Slow or uneven extractions
- Unusual pump, motor or solenoid noises
- Water underneath the machine
- The machine filling continuously
- Slow or blocked drainage
- Coffee tasting different despite using the same recipe
- Grinder doses becoming inconsistent
- Excessive grinder clumping
- Burning smells or repeated electrical faults
- Error messages that keep returning
Switch the equipment off immediately if there is a burning smell, smoke, a serious electrical fault or a major uncontrolled leak. Do not continue using unsafe equipment simply because the morning rush has started.
A simple preventative maintenance checklist
Every day
- Backflush each group as recommended
- Clean group handles and filter baskets
- Brush group heads and seals
- Purge and wipe steam wands after every use
- Clean milk lines and automatic milk systems
- Empty and wash drip trays
- Check that drains are flowing
- Brush the grinder chute and dosing area
- Wipe down the equipment and surrounding bench
Every week
- Deep-clean group handles and baskets with Cafetto
- Inspect and clean steam tips
- Clean the grinder using the appropriate Cafetto product
- Wash and thoroughly dry the grinder hopper
- Inspect hoses, drains and visible fittings
- Clean underneath and behind the equipment
Every month
- Check water-filter age, flow and capacity
- Inspect group seals and shower screens
- Look for leaks underneath the machine
- Check grinder dose and extraction consistency
- Clean ventilation openings
- Record any recurring faults or changes in performance
Every three months
- Inspect or replace group seals and shower screens as required
- Deep-clean the grinder burr chamber
- Check grinder calibration
- Inspect steam valves, drain lines and water connections
- Review water-filter usage
- Arrange a technician visit for high-volume equipment where appropriate
Every six months
- Arrange a technician inspection for heavily used equipment
- Check pressures, temperatures and volumetric settings
- Inspect steam valves, solenoids and flowmeters
- Assess grinder burr wear
- Plan replacement of components showing signs of deterioration
Every year
- Complete a full professional machine service
- Inspect internal hydraulic and electrical systems
- Assess scale and corrosion
- Inspect safety components
- Replace worn seals and service items
- Check or replace the water filter
- Inspect grinder burrs and recalibrate the grinder
- Review the equipment’s overall reliability and remaining service life
Preventative maintenance is cheaper than emergency downtime
A maintenance plan does not guarantee that a machine will never break down. Commercial coffee equipment works hard, and components will eventually wear.
What good maintenance does is give you a much better chance of finding problems early, planning repairs and keeping your café operating.
Daily cleaning protects flavour. Monthly inspections identify changes. Scheduled servicing allows worn parts to be replaced before they cause larger failures.
Most importantly, your team should know who is responsible for each job. A checklist sitting underneath the counter is not much use if everyone assumes somebody else completed it.
Keep a cleaning schedule, record filter changes, retain service reports and make equipment care part of your barista training.
For cleaning products, grinder cleaners, water filtration, spare parts or professional servicing, contact Complete Cafe Services.
Our experienced Adelaide coffee technicians service and repair domestic, office and commercial coffee machines and grinders. We can also help you develop a preventative maintenance schedule suited to your equipment, water conditions and coffee volume.
Call Complete Cafe Services on 08 8338 0600, email tech@cafeservices.com.au, or visit us at 45 Charles Street, Unley SA 5061.
