If you have a bar and work with a professional coffee machine, I'll tell you straight away without mincing words:
If you don't manage your water well, you're ruining your machine and your coffee every day.
It's not an opinion.
It's technical.
It's experience.
And it's one of the most common mistakes I see in bars.
I'm Giorgio Ascione and I come from the bank.
I know what it means to work under pressure, produce volumes, cash in... and at the same time put off maintenance because "the machine will run anyway."
Spoiler: It goes, until it stops.
Why cleaning your coffee machine is essential
Water is the main ingredient in coffee.
But if it is hard, full of limescale and not treated correctly, the same things always happen:
the car heats up poorly
the pressure becomes unstable
groups get clogged up
the resistors burn out
coffee changes taste
And guess who pays?
You. In service. In spare parts. In lost customers.
Water purification serves exactly this purpose:
👉 protect the machine
👉 ensure consistency in the cup
👉 extend the life of the system
Purification, salting, descaling: let's clarify
I often hear confusion in the bar, so I'll clear this up once and for all.
🔹 Purification / softening
It is the process that removes calcium and magnesium from the water before it enters the machine.
It is done through:
resin + salt water softener
filter cartridges
reverse osmosis systems
It is the first defense against limescale .
🔹 Salting (water softener regeneration)
Many people are wrong here.
Salting is of no use to the machine ,
it is used in the water softener.
The salt regenerates the internal resins that have already absorbed the limestone.
If you don't regenerate your water softener:
➡️ the water becomes hard again
➡️ Limescale enters the car
➡️ damages are guaranteed
🔹 Descaling
It is the operation that removes the limescale already present in:
water heater
pipes
groups
valves
It should be done periodically, even if you have a good water softener.
How often should the water softener be salted?
It depends on two factors:
water hardness
number of coffees per day
Indicatively:
medium water → every 7–10 days
hard water → even every 3–5 days
high volume bar → never more than 7 days
If you wait until “you remember,” you’re already late.
The correct procedure (in short)
I'll summarize it for you, but in the PDF manual you'll find everything step-by-step .
Close the water inlet
Release the pressure
Open the water softener
Add coarse food salt
Reactivate the water slowly
Let the brine work for 30–45 minutes
Restore the system
Simple.
But it must be done well and regularly .
Does this apply to all barista machines?
Yes.
That you have:
The Marzocco
New Simonelli
Victoria Arduino
Faema
Astoria
The Pavoni
The logic doesn't change .
Only the type of water softener or electronic control changes.
And this is precisely why I created a universal manual , valid for any professional bar coffee machine .
The real problem? No one really explains it to you.
Most bars:
He only does maintenance when the machine breaks down
delegate everything to support
does not train staff
Result?
High costs, unstable quality, constant stress.
The truth is that a barista who knows the machine works better .
And earn more.
👉 Download the complete manual (PDF)
For this reason I have created a practical, clear and illustrated manual , where you will find:
step-by-step procedures
simple explanations
maintenance tables
valid for all bar machines
📘 Download the Coffee Machine Cleaning and Salting Manual now
If you work behind a counter, this is not optional.
It's part of the job .
And if you want a bar that actually works,
We always start from here. ☕🦁
Professional Coffee Machine Cleaning and Maintenance Manual
Limescale is the main enemy of a professional coffee machine: it slows water flow, prematurely ages components, increases energy consumption, and compromises the final quality of the coffee. This manual provides comprehensive operating instructions for preventative and corrective maintenance, ensuring optimal performance and longevity of the equipment.
The Two Fundamental Processes in Limestone Management
To effectively protect your professional coffee machine, it is essential to understand and correctly implement two complementary processes that work synergistically to prevent and resolve limescale problems.
Water Softening
Prevention through purification
- Removal of calcium and magnesium
- Use of resins and salt
- Continuous component protection
- Reduction of scale formation
Descaling of Systems
Removal of existing limescale
- Elimination of deposits formed
- Pipe and boiler cleaning
- Restoring thermal efficiency
- Scheduled periodic maintenance
Softening acts as primary prevention, drastically reducing the formation of limescale deposits. Descaling, on the other hand, removes residues already present in the system. Both processes are essential to keep the machine in optimal operating conditions and guarantee the quality of the espresso served to customers.
Water Purification Systems: Available Technologies
There are various water purification technologies, each with specific characteristics suited to different operational needs and budgets. Choosing the most appropriate system depends on the hardness of your local water, the volume of coffee brewed daily, and the desired quality level.
Resin + Salt Purifier
Classic and reliable system
It uses ion-exchange resins that replace calcium and magnesium ions with sodium ions. It requires periodic regeneration with coarse food-grade salt.
Advantages: Low cost, proven effectiveness, easy maintenance
Requires: Regular manual regeneration
Filter Cartridges
Practical solution
Pre-assembled ion exchange cartridges are easier to replace. Ideal for bars with limited space or untrained staff.
Advantages: Quick installation, simplified maintenance
Requires: Periodic cartridge replacement
Reverse Osmosis
Advanced technology
A system that eliminates virtually all minerals through semi-permeable membranes. It produces ultra-pure water, ideal for specialty coffees and high-end bars.
Advantages: Maximum quality, total control
Requires: Higher investment, controlled mineralization
When to Regenerate Your Water Softener: Frequency and Scheduling
The frequency of water softener regeneration is not uniform but depends on variables specific to your establishment. Proper planning prevents problems and optimizes operating costs. The determining factors are the hardness of the local water supply (measured in French degrees °f or parts per million ppm) and the volume of coffee brewed daily.
Indicators of Need
- Reduction of delivery pressure
- Increased extraction time
- Unstable water temperature
- Formation of visible white deposits
- Expiration of scheduled days
Factors that Accelerate Wear
- High volume of daily coffee
- Particularly hard water
- High operating temperatures
- Irregular water pressure
- Insufficient cleaning of circuits
Tools and Materials for Regeneration
Before proceeding with the water softener regeneration, it is essential to prepare all the necessary tools and materials. Careful preparation ensures a quick, safe, and effective intervention, reducing machine downtime.
Coarse Food Salt
Use only water softener salt (99.5% pure NaCl). Avoid table salt with additives. Quantity: 1.5-2 kg for a standard regeneration.
Graduated Bucket
A 2-5 liter plastic bucket for making the brine. Prefer containers with graduations for precise salt dosing.
Protective Devices
Safety glasses and nitrile or latex gloves. They protect against splashes of concentrated brine, which can irritate skin and eyes.
Wrenches and Tools
Adjustable or fixed wrenches for faucets and purifier levers. Screwdriver set for any covers. Check measurements before starting.
Safety always comes first: don't underestimate the importance of personal protective equipment. Contact with concentrated brine can cause skin irritation and eye damage.
Complete Water Softener Regeneration Procedure
This universal procedure applies to most professional water softeners with manual lever or tap systems. Carefully following each step ensures effective and safe resin regeneration.
Preparation and Safety
Shut off the water supply to the machine by turning the main valve clockwise. Release any residual pressure by opening a secondary tap or the dispensing unit. Wear safety glasses and gloves. Make sure the machine is turned off and cooled.
Water Softener Opening
Turn the inlet valve clockwise to completely isolate the water softener. Slowly unscrew the top cap of the water softener counterclockwise. Be careful of any residual water that may leak out. Place the cap on a clean surface.
Adding Salt
Slowly pour the recommended amount of coarse salt into the container: 1.5 kg for 8-liter tanks, 2 kg for 12-liter tanks. Distribute evenly, avoiding buildup. Thoroughly clean the edges and threads of any salt residue before closing to ensure a perfect seal.
Regeneration Process
Turn the water inlet valve back on very slowly to avoid water hammer. The water passes through the salt, forming a concentrated brine that regenerates the resins. Let the system run for 30-45 minutes without pressurizing the machine. Do not use the dispenser during this time.
Check and Closure
After 45 minutes, take a water sample and check that it does not have a pronounced salty taste. A slight aftertaste is normal initially. Return all faucets and levers to their normal dispensing positions. Reconnect the main water supply and check for leaks. Let the water run for 2-3 minutes before restarting the machine.
Descaling of the Boiler and Internal Circuits
Even with an effective water softening system, mineral deposits inevitably form over time in the pipes, boiler, and valves. Regular descaling is essential to maintain thermal efficiency, ensure stable temperatures, and prevent costly mechanical failures.
Why Limestone Forms
Dissolved minerals in water (primarily calcium and magnesium) precipitate when water is heated to high temperatures. These deposits accumulate on internal metal surfaces, forming an insulating layer that:
- Reduces heat transfer efficiency
- Increase warm-up times
- Increases energy consumption
- Causes premature wear of components
- Alters the extraction temperature
- It compromises the quality of the coffee
Recommended Descaling Products
Specific professional solutions Like Puly Descaler or equivalents formulated for espresso machines. They guarantee effectiveness without damaging seals.
Food grade citric acid It represents an economical and ecological alternative. Dosage: 30-50g per liter of water.
Caution: Never use pure vinegar in professional machines. Acetic acid can corrode rubber seals and delicate components.
Step-by-Step Descaling Procedure
This universal procedure is suitable for all professional coffee machines. Some models may have specific automatic functions: always consult the manufacturer's manual for any variations.
Solution Preparation
Empty the water tank completely. Prepare the descaling solution following the manufacturer's instructions (typically 100-150 ml of product per liter of water). Refill the tank with the prepared solution.
Solution Delivery
Start the machine and wait for it to heat up completely. Dispense 2-3 cups of solution through the group head as if making coffee. Also activate the steam wand for 30 seconds to treat that circuit.
Time for Action
Leave the solution to act for 10-15 minutes with the machine turned on but not dispensing water. This allows the acid to dissolve limescale deposits on all internal surfaces.
Treatment Completion
After the soaking time, dispense the entire remaining contents of the tank through the group and steam wand. This removes any loose deposits from the circuits.
Rinse thoroughly
Empty and rinse the tank thoroughly. Refill with clean, fresh water. Flush at least 2-3 full tanks through all circuits to remove all traces of chemicals.
Final Verification
Taste the dispensed water: it should have no unusual taste or odor. Brew a test coffee and check for any aftertastes. Only after this check is the machine ready for use.
Adaptation for Specific Makes and Models
While the basic principles remain constant, different types of professional machines have technical peculiarities that require minor adjustments to procedures. Here are the most common variations for the main equipment categories.
Machines with External Water Softener
Examples: La Pavoni, traditional Faema models, Astoria Classic
Follow the standard regeneration procedure described in Chapter 6. After regeneration, flush water through the system until it is completely clear and free of salt residue. Check that the bypass levers are working properly.
- Visually check the resins every 6 months
- Completely replace the resins every 2-3 years
- Clean the container of any deposits
Water Softeners with Electronic Display
Examples: Integrated systems with volumetric or timed control
These systems allow you to program regeneration based on the volume of water treated or at set intervals. Set the local water hardness parameters correctly in the menu. Many models offer a "Regenerate Now" function accessible from the control panel.
- Check the salt level regularly via the display
- Record your water consumption to optimize regenerations
- Update the parameters if the water hardness changes
Super-automatic machines
Examples: Fully automatic models with integrated cleaning cycles
These machines have internal guided descaling programs. Use only the products recommended by the manufacturer to avoid damaging the electronic sensors. Follow the on-screen instructions when the maintenance reminder appears.
- Never ignore descaling warnings
- Run cycles more frequently with very hard water
- Combine with preventive water softening
Regardless of the model, always consult your machine's specific manual. Manufacturers provide precise instructions on compatible products and best practices to preserve your warranty.
Maintenance Planning: Complete Calendar
Well-planned maintenance is key to maximizing machine life and ensuring consistent quality. This calendar provides guidelines for organizing all necessary maintenance throughout the year.
|
Maintenance Activities |
Frequency |
Operating Notes |
|
Water softener regeneration with salt |
7-15 days |
It varies based on water hardness and usage. Record each intervention. |
|
Descaling of internal circuits |
3-8 weeks |
More frequent with hard water. Mandatory if pressure drops. |
|
Cleaning the dispensing heads |
Daily |
At the end of the service with a toothbrush and specific detergent. |
|
Replacing the group gaskets |
6-12 months |
Check for wear, replace if leaking or hard. |
|
Changing filters/cartridges |
6 months |
Regardless of external appearance, meet deadlines. |
|
Boiler pressure check |
Monthly |
Check pressure gauge: 0.9-1.1 bar for E61 groups. |
|
Professional technical maintenance |
1-2 times/year |
Entrusted to an authorized technician for thorough checks. |
Increased useful life
A well-maintained machine lasts three times longer than a neglected one.
Energy saving
Regular cleaning reduces electricity consumption by up to 25%
Costs avoided
Prevention avoids breakdowns that can cost thousands of euros
Conclusions
By following this step-by-step operating manual, you can implement an effective maintenance routine that's suitable for all commercial coffee machines, regardless of brand or model. Water care and regular cleaning of the circuits are the most important investments to ensure a perfect cup of coffee and equipment that always works like new.
Remember that every bar has specific needs: use this manual as a basis and adapt it to the characteristics of your local water and production volumes. An accurate log of maintenance operations will allow you to gradually optimize frequencies and procedures, reducing costs and downtime.
Espresso quality begins with the quality of the water. A well-maintained machine is the best investment for your establishment's reputation.