▷ complete guide to hard water

The main thing to remember: The regenerating salt prevents encrustations caused by the hardness of the water, guaranteeing sparkling dishes and longer life of the appliance. Essential in hard water areas optimizes the efficiency of washing cycles. Opt for a specific salt like Dishwasher Regenerating Salt or Solar Dishwasher Salt for maximum protection.

Who has never had the annoyance of cloudy glasses or a dishwasher slowed down by limescale? The salt in the dishwasher is anyway the solution for shiny dishes and preserved machine. Hard water, rich in calcium, damages the heating elements, but the regenerating salt prevents this damage by regenerating the softener resins. Find out how to choose the right salt, dose it based on the hardness of the water and avoid costly mistakes. This practical guide offers essential tips for optimal operation, adapted to all models: proven solutions for lasting efficiency.

1. Why is salt in the dishwasher a fundamental ally?

1. Determining water hardness: the key to perfect dosing

1. practical guide: how and when to add regenerating salt

1. All-in-one tablets and salt: is it worth combining the two?

1. Mistakes to avoid and frequently asked questions

1. In short: the essential steps for a high-performance dishwasher

Why is salt in the dishwasher a fundamental ally?

Salt in the dishwasher is not a useless accessory, but an essential component to counteract the hardness of the water. Saturated with calcium and magnesium ions, this water leaves white spots on dishes and weakens the appliance. Without regenerating the salt, the integrated water softener loses its effectiveness, leading to long-term damage.

The fight against limescale: a challenge for your dishes and your machine

Hard water works silently. Its limescale deposits tarnish dishes and clog heating elements, reducing energy efficiency. Regenerating salt prevents this damage, preserving the appliance and ensuring shiny crockery at each cycle.

The secret of fabric softener: how salt regenerates your dishwasher

The water softener uses resins that capture limescale ions. These resins run out and require renewal through regenerating salt, composed of sodium chloride. During regeneration, the salt releases sodium ions, replacing the captured lime ions. This process reactivates the resinsready to soften the water for the next wash. Without this regeneration, limescale takes over.

Using regenerating salt is not just a simple maintenance tip, it is the guarantee of shiny dishes and a dishwasher always protected from its number one enemy: limescale.

A technical but accessible mechanism, optimized following the manufacturers’ recommendations for durable performance.

Determining water hardness: the key to perfect dosing

Adapt the regenerating salt to the hardness of the water (in °fH) prevents limescale deposits and extends lifespan of your dishwasher. This data determines the amount of salt needed and the softener setting, influencing the quality of the wash.

To know the hardness of your water :

1. Check with your water supplier via your bill or website. The values expressed in mg/L of CaCO3 are converted by dividing by 10 (e.g. 150 mg/L = 15°fH).

1. Use the test strips by immersing them in a sample of water for 30 seconds. Compare the color with the scale provided to obtain the hardness level.

Adjust the fabric softener according to the measured hardness. Most models (Bosch, Siemens, etc.) offer adjustment via a menu accessible by holding down a button (e.g. “Setup” on Bosch). Check your user manual for exact steps.

Guide to adjusting the dishwasher based on water hardness
Water hardness (°fH)	Type of water	Recommended setting	Action required
0 – 7 °fH	Very soft	Minimum setting	Salt not necessary, but recommended to preserve the device.
7 – 15 °fH	Gentle	Low setting	Salt recommended to improve washing.
15 – 25 °fH	Moderately difficult	Average setting	Regenerating salt required to avoid limescale deposits.
25 – 40 °fH	Hard	High setting	A monthly check of the salt tank is essential.
> 40 °fH	Very difficult	Maximum setting	Check salt frequently. Just avoid all-in-one tablets.

Improper adjustment can damage the softener resins or leave traces. If you’re unsure, choose a slightly higher level. Check settings upon installation or after changing water supplier. For the initial filling, fill the tank with 2 kg of salt and rinse quickly.

The practical guide: how and when to add regenerating salt

Choosing the right salt: a fundamental step

The regenerating salt for dishwashers stands out for its specific grain size. Unlike table salt, which is too fine and risks clogging the fabric softener, it comes in large grains or powder. This unique structure allows for progressive dissolution and optimal regeneration of ion exchange resins. Additives in regular salt, such as anti-caking agents, disrupt the filtration system and can damage the unit. For maximum effectiveness choose 99% pure salt, without impurities. A quality regenerating salt guarantees streak-free dishes and a prolonged life of your machine.

Fill the tank, step by step

1. Locate the tank : Lift the lower basket to reveal a cylindrical compartment marked with the “S” symbol on the bottom of the tank.

1. Prepare the filling : Unscrew the cap completely. If necessary, pour a glass of water before the salt for immediate regeneration.

1. Pour in the salt : Use the supplied funnel or a household funnel. Fill up to 1 cm from the edge, allowing the residues of the water-salt mixture to pass through.

1. Finalize the operation : Screw back on firmly. Wipe up any spilled sand to prevent corrosion. If residue has come into contact with the tank, run an empty cycle.

The ideal frequency: when to add salt?

Two indicators guide replacement: the indicator light on recent models or a monthly manual check for older devices. Water hardness directly influences consumption. In very calcareous areas, monthly filling is necessary. In areas with fresh water it is sufficient to recharge every two or three months. A simple indicator: dull dishes or white spots suggest a salt deficiency. Never ignore this sign: a faulty water softener increases the risk of internal encrustations by a factor of 3, reducing the life of your dishwasher.

All-in-one tablets and salt: is it worth combining the two?

All-in-one tablets (3 in 1, 5 in 1, etc.) offer a practical solution by combining detergent, regenerating salt and rinse aid. They simplify the use of the dishwasher while providing a base of protection against limescale. However, their the effectiveness depends on the hardness of the water.

The dose of salt integrated into these tablets is sufficient only for slightly calcareous waters (below 20-25°fH). Beyond this, the softening action becomes insufficient and white deposits may appear on the dishes. If your water is moderately hard, hard or very hard (see the hardness table), the salt in the appropriate tank becomes essential. The device will then use this additional salt only when necessary, optimizing its consumption thanks to the integrated softening system.

For moderately hard to very hard water, consider the salt function of the tablets as a bonus, but never neglect filling the dedicated tank for optimal protection.

For maximum effectiveness, combine all-in-one tablets and regenerating salt. This dual action approach prevents limescale deposits, protects the appliance and guarantees brilliant dishes thanks to the targeted action on calcium and magnesium ions. Discover complete solutions such as 5-in-1 three-layer dishwasher tablets, designed to adapt to different needs. These combined products also guarantee optimal rinsing and streak-free drying, even with very thin glasses or delicate crockery.

Mistakes to avoid and frequently asked questions

What happens if you don’t put salt in the dishwasher?

Without salt, hard water leaves white spots on dishes. In the long run, limescale accumulates in the pipes and on the resistors, risking breakages. Detergent also loses its effectiveness, degrading the quality of the wash.

My tank is full but the light stays on. What to do

The salt can form a compact block. Break the tufts with a stick. Gently clean the float. If the problem persists, check the water hardness setting or contact a professional.

Is it possible to use salt for the home water softener?

Yes, only pure sodium chloride in large crystals. Consult the manufacturer’s recommendations to avoid damage to the softening system.

The 3 mistakes you should never make

- Use table salt : Too fine, damages the fabric softener.

- Leave the tank empty : In areas with hard water, this accelerates the formation of scale and wear of the machine.

- Forgetting to screw the cap back on : This causes leaks during the wash cycle.

In short: the essential steps for a high-performance dishwasher

- Check the water hardness and set the device to optimize softening.

- Use only specific regenerating salt to avoid risks of corrosion or blockage.

- Fill the tank as soon as the light comes on or once a month for a constant efficiency.

- Feel free to add salt even if you use all-in-one tablets in case of hard water.

To ensure the best maintenance of your machine, equip yourself with quality products and opt for recognized efficiency.

By following these steps you will ensure the safety of your dishwasher impeccable hygiene and optimal longevity. The regenerating salt fights limescale, preserves resistance and guarantees shiny dishes. Adapt the dosage to the hardness of the water, use a suitable salt and avoid common mistakes. Supervision essential for long-lasting results.