Practical notes

Limescale Protection

Practical notes regarding AquaKLEAR AquaZino Limescale Protection

Fittings are often affected by limescale dust

The limescale no longer sticks when AquaZino | AquaKlear Hydropath Limescale Protection is used: You can just wipe the limescale away. Chemical cleaning products are no longer required. Limescale dust stuck to fittings or taps is easily wiped away within approx. 72 hours using a soft dry cloth. Chemical cleaning products are no longer required. Physical limescale inhibitors do not replace cleaning, but make it easier and take the pressure off the wastewater treatment system.

Car washes

Car washes no longer need softened water or so-called osmosis water. This not only helps limescale inhibitors to reduce costs, but it is also easier on the environment. The amount of detergent can be reduced by at least half. Any rinsing agent should be acidic. The water drips quickly off the bodywork. No limescale or water residues are left.

Boilers

Limescale sediment increases greatly above 60° C. The corresponding scaling significantly reduces the efficiency of the hot water system. This leads to longer heating-up times, scaled-up temperature sensors, and in the worst case overheating or failure of heating elements. Physical limescale inhibitors help here - hot water production is more efficient and maintenance costs fall. With physical limescale inhibition devices, boilers no longer scale up as heavily and intensively, rather the formed limescale remains on the bottom in the form of sludge. It is either flushed away, or can also be drained off. The heating elements, to which only a thin, easy-to-remove layer of limescale remains stuck, work at full output.

Pressure lines

Physical limescale inhibitors using electrical fields also protect lines with standing water from limescale deposits, e.g. sprinklers or fire extinguisher pipes. Outlet nozzles on such pipes no longer become encrusted, and the limescale deposits no longer continue to spread.

Water heaters

Limescale sediment increases greatly above 60° C. The corresponding scaling significantly reduces the efficiency of the hot water system. This leads to longer heating-up times, scaled-up temperature sensors, and in the worst case overheating or failure of heating elements. Physical limescale inhibitors help here - hot water production is more efficient and maintenance costs fall.

Haircare

Take half of your usual amount of shampoo and rinse your hair well with cold water. You will obtain the same result as before, and your hair is shinier.

Coffee machines

Coffee machines Limescale in coffee machines can be significantly reduced thanks to limescale and rust inhibition.

With the right approach, limescale in domestic coffee machines can be drastically reduced. Disconnecting the water container from the pipe reduces the effect after 72 hours. In any event, the water container should be refilled with clean water every day for hygiene reasons. In doing so, it is important to briefly rinse the water container with cold water.

Cooking appliances, pans, etc.

When water is heated, bubbles rise from the bottom of the pot allowing the metal surface to rust and limescale to collect and settle. Using a physical limescale inhibitor can prevent this if you wipe the pot after use or rinse it thoroughly with cold water and dry it. By using a physical limescale inhibitor you can prevent limescale from sticking and therefore do not need to use chemical anti-limescale products. This not only allows you to look after your pots and pans, but also the environment when discharging the wastewater.

Humidifiers

Limescale normally sets stubbornly in humidifiers and can therefore only be removed with strong chemicals or mechanical means. Heavy scaling is prevented in humidifiers operated with water treated by a physical limescale inhibitor. The following needs to be observed: In sealed devices with a water container not connected directly to the mains water, the treated water starts to take effect after two to three days. The water should therefore be replaced on a regular basis. With humidifiers, the physical limescale inhibitor does not replace cleaning, but it does make the cleaning process easier.

Plants/shrubs

Treated water prevents the roots from becoming encrusted, which makes it easier for them to absorb fertiliser and minerals. The plants grow better and become more resistant.

Water hygiene

Limescale inhibition is also very important with regard to water hygiene. With thick, rough surfaces in pipes (limescale and sludge deposits) there is a danger of pathogenic bacteria (such as Legionella) settling in. Powerful physical limescale inhibitors are also of help here: It is harder for the bacteria to form a biofilm and find nourishment.

Screens

Limescale dust stuck to shower grates, taps and fine machine screens can be wiped off easily within approx. 72hours (without chemical products) with a soft, slightly damp cloth. Nevertheless, grates and shower heads should still be placed in vinegar now and then for cleaning. This is particularly necessary if soapy contaminants in the form of water and steam reach the screen head from outside (washing-up basin, shower head). The latter prevents limescale, despite having been treated, from being completely rinsed away. You will be aware that the problem is easy to resolve by cleaning the screen (placing in vinegar).

Bathtubs

Reduce bath additives by half. You will achieve the same results as before. Where oily bath additives have been used, the bathtub should be cleaned with a cleaning agent to remove the oily or greasy substances. The bathtub can then simply be rinsed with cold water. They are generally left shiny without even wiping down with a cloth.

Washing cars

Cars can be washed with half the detergent otherwise normally used. The car should always be rinsed afterwards with cold water. No limescale residues should remain when dried. However, where some still remain they can be easily wiped away with a dry cloth.

Wet rooms

The amount of shower gel can be reduced by at least half. It gives the same results as before. After showering, the inside can be simply rinsed with cold water and dried with a dry cloth. If droplet residues have dried on, these can easily be wiped off within 72 hours with a dry cloth.

Dishwashers.

The following applies despite different manufacturer recommendations: You can reduce the detergent to the amount required for soft to medium water hardnesses, and perhaps set the existing machine settings to the 'soft or medium-hard water' setting. You can also try running the dishwasher for some time without salt (but always with rinsing agent). To do so, select a low-temperature programme, and if need be add a cold rinse cycle. Glasses turning white in the dishwasher means glass corrosion as opposed to limescale deposits. Glass corrosion in the dishwasher depends primarily on the quality of the glass used. This should not happen with 'dishwasher-proof' glasses.

Industrial coffee machines

The majority of coffee machines are connected directly to the mains water. Effective physical limescale inhibitors work continuously as described under 'Pressure Lines'. Where required, de-scaling or osmosis systems (still common in many places) can be dispensed with.

Comment

The 'de-scaling and cleaning programme' for the internal 'brewing area' specified by the manufacturer cannot be ignored. The same applies to any filter insert where specified by the manufacturer.

Kettles

The internal walls, and above the element, get extremely hot. They take a very long time to cool down, and damp areas dry out. This also allows the limescale to remain stuck in part. We recommend you leave any residual water in the kettle, or better still replace it with treated cold water. The dissolved limescale remains in the water and should be rinsed out before the next use. Regular de-scaling cannot be dispensed with for kettles. Nevertheless, it is not required so often, and the limescale dissolves more quickly and easily.

Cleaning

A physical limescale inhibition system does not take the place of cleaning, but does make the work easier and saves on cleaning products. Of course, this is easier on wastewater. You can remove dried-on water drops within approx. 72 hours with a slightly damp cloth (micro-fibre cloth if possible). Chemical cleaning products are superfluous.

Rust protection

Corrosion removes the zinc coating on metal pipes with galvanised internal surfaces, gradually exposing the underlying iron-zinc alloys. This leads to iron corrosion, which combines with the separated limescale to form a thick brown coating of limescale and rust. Physical limescale inhibitors cannot prevent rust from forming, but do have a preventative influence on rust continuing to form by leaving a thin residual protective limescale coating on the pipe, depending on the device.

Heat exchangers

Scaling significantly reduces the efficiency of the hot water system. Physical limescale inhibitors help here - hot water production becomes more efficient and maintenance costs fall. Over time, scaling on the heat exchanger leads to excessive energy costs when heating water. It is often not even possible to reach the desired water temperature. The greater the temperature difference, the greater the deposits forming. As larger metal surfaces are involved, it is particularly important to use an efficient, powerful limescale inhibitor. It is also important to operate the heat exchanger correctly and be able to purge the heat exchanger of any limescale removal products.

Taps

Seals are hardly attacked on hot and cold taps. Repairs are very rare. Taps do not become stuck. See also under 'Screens'.

Washing machines

The detergent used can be reduced to the amount for soft or medium water hardness (also applies to hand-washing). De-scaling agents can be reduced significantly or dispensed with altogether. Conditioner can be dispensed with or simply replaced with vinegar. Calgon or even 1 decilitre vinegar can be used at high water temperatures (90° C). Reducing detergent allows you not only to save a lot of money, but also to contribute to reducing wastewater problems.

Clean-up phase

The clean-up effect depends on the device's performance, the flow rate of the water, the amount of deposit (proportion of lime in the water), the type of deposit (water temperature), and the density of the limescale deposit in place. The removal process starts after only a few days and, in the vast majority of cases, takes about 5 to 8 weeks. With stubborn deposits it may take 4 to 5 months, and in hot water pipes even up to 5 to 7 months.


The clean-up process can be accelerated by setting all the water intakes to full flow once a week for a few minutes (remove screen if possible). Such a radical measure is not generally needed.


If during the removal process larger limescale deposits are seen on the screens, then under certain circumstances the pipe may be slightly blocked until the detached piece of limescale has been removed. If you identify temporary heavy 'dry rigidity' with laundry due to repeated removal of limescale, you can add conditioner for a short period. Vinegar can also be used instead of conditioner.


Physical limescale inhibitors prevent any rust from continuing to form by leaving a thin residual protective coating of limescale on the pipe, depending on the device. During clean-up, limescale is deposited in various layers and a piece of limescale may work loose from the floor of the pipe and expose an underlying layer of rust. This leads to reddish water for a short time until the new limescale covers this point again and protects it with a thin coating of limescale.


Do not worry if after a year (or more) you find limescale in your screen, as a larger crust (outside the area of the primary action) will have worked loose and been pushed to the light of day. This should not worry you, rather prove that the system is working.


The removal process may take longer in hot water pipes (5 to 7 months). Above all, multiple fragments of limescale are to be identified during the monthly purging of flow heaters.


There may be an increased build up of calcium soaps (white greasy masses), and even on the outside of the screens (sinks, showers, sprinklers, etc.) on water intakes as a reaction of limescale dust with soapy contaminants. Cleaning with vinegar is sufficient.


Where the limescale hardness is above average with very significant encrustation so only a small opening for the water remains, it may take longer to complete the clean-up process. In extreme cases, the clean-up will need to be helped along with mechanical means.

Hydro-Service Schweiz GmbH

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