No Calc L descalers: professional guide to use in dishwashers
How to use No Calc L for periodic descaling of dishwashers and boilers, with dilution rates, contact time and practical maintenance steps.
Why use No Calc L for periodic maintenance
No Calc L from the Lüster EcoLine range is an acid descaler designed for the periodic maintenance of dishwashers and boilers. It dissolves limescale and mineral residues from heating elements, pumps and internal circuits, helping the machine operate more consistently.
In professional settings, periodic descaling matters because mineral build-up can reduce heat exchange and interfere with water flow. No Calc L helps restore the machine’s energy efficiency, operating temperatures and operating pressures, while supporting longer service life.
Step-by-step professional method
Before treatment, check the dosing unit and set the concentration according to water hardness. This step helps adapt the process to real operating conditions and keeps product use under control.
Then run a complete wash cycle and allow a contact time of 10–20 minutes, followed by an empty cycle. As part of routine maintenance, it is advisable to check product level and nozzle cleanliness weekly.
Dilution rates, yield and frequency
For monthly maintenance, the recommended dilution is 100 ml per 1 litre, with a final yield of 10 litres of solution. For heavier scale deposits, the intense dilution is 200 ml per 1 litre, with a final yield of 5 litres.
Recommended frequency is monthly or according to the level of soiling. In professional kitchens, especially where hard water promotes mineral build-up, scheduled descaling helps prevent performance loss and unplanned downtime.
Practical advice for professional use
A useful benchmark is that 1 mm of limescale can mean 18% more energy use. Regular descaling is therefore not only about removing mineral deposits, but also about bringing the machine back to more efficient operating conditions.
No Calc L is available in a 5 kg format, suitable for planned professional maintenance. A simple routine based on dosing checks, nozzle inspection and frequency control helps maintain consistent results over time.
FAQ
How often should No Calc L be used?
The recommended frequency is monthly or depending on the amount of scale and soil. Where water is hard or machine use is intensive, regular checks are especially important.
Which dilution should be used?
For monthly maintenance, use 100 ml per 1 litre, with a 10-litre final yield. For a more intensive treatment, use 200 ml per 1 litre, with a 5-litre final yield.
Is any final step required after contact time?
Yes. The required contact time is 10–20 minutes, followed by an empty cycle. This is part of the recommended use method.

