Water hardness and dishwashing

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What is water hardness?

Hard water is water with a high concentration of minerals such as calcium and magnesium. In soft water, this concentration is low. Water hardness varies by geographical location.

How does water hardness affect dishwashing?

Hard water can be detrimental to the performance of your dishwasher. Over time, glassware washed in hard water will become opaque and dishes will become spotted or covered in a white film. Using very hard water can cause dishwasher parts to fail over time.

Naturally soft or softened water has no detrimental effects if used with the correct amount of detergent. However, excess detergent combined with hot, soft water may cause irreversible etching on glassware. Etching first appears as a rainbow-coloured film and—if allowed to continue—can make glassware permanently opaque.

What can I do to minimise any detrimental effects?

Contact your local water company to find out about water hardness in your area.

If your home has hard water and your dishwasher has no built-in water softener… Follow the detergent quantity recommendations on the following pages.

If available, use a detergent with high phosphate content. Phosphate softens the water and this improves wash results. If detergent with phosphate is not available, we recommend using multi- purpose tablets.

Use rinse aid. We recommend you turn the rinse aid setting to 5 to help improve wash performance.

Use a dishwasher cleaner/descaler regularly, or whenever you notice a build-up of limescale deposits in your dishwasher.

Important!

We recommend fitting a water softener to the household water supply. If the water hardness in your home is above 250 ppm/14.6 gpg, a water softener has to be fitted to maintain the performance of your dishwasher.

If your home has naturally soft or softened water…

Avoid using too much detergent. Follow the quantity recommendations on the following pages. Ensure the drawer is not overloaded and water can reach all the dishes.

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Fisher & Paykel DD36, DD60, DD90, DD24 manual What is water hardness?, How does water hardness affect dishwashing?

DD24, DD90, DD36, DD60 specifications

Fisher & Paykel is renowned for its innovative kitchen appliances, and their range of dishwashers, including the DD60, DD36, DD90, and DD24 models, exemplifies the brand’s commitment to quality and user-centric design. Each model in this lineup brings unique features and advanced technologies to enhance the dishwashing experience.

The Fisher & Paykel DD60 is a distinctive double drawer dishwasher that offers the convenience of washing at two separate capacities. This twin-drawer design allows users to operate one drawer while the other remains closed, accommodating varied loads and enabling energy efficiency. With its SmartDrive technology, the DD60 uses a direct current motor that intelligently adjusts water and energy consumption, ensuring optimal cleaning performance while minimizing resource usage.

Moving on to the DD36, this model provides a spacious design that can hold larger loads, perfect for extensive dinner parties or family gatherings. Its stylish design fits seamlessly into a modern kitchen, while the flexible racking system ensures that dishes of all shapes and sizes can be accommodated. The DD36 also incorporates the same SmartDrive technology, guaranteeing effective cleaning with eco-friendly attributes.

The DD90 stands out with its sizable capacity and advanced wash system. It features an intuitive control panel and customizable wash cycles, allowing users to choose the ideal settings for the load at hand. The DD90's stainless steel interior enhances durability and resists stains, while its multiple spray arms ensure thorough coverage and cleaning efficiency. Additionally, it operates remarkably quietly, making it a perfect fit for open-concept living spaces.

Lastly, the Fisher & Paykel DD24 is a compact solution that fits seamlessly into smaller kitchens without compromising on performance. This model is perfect for apartment dwellers or those looking to maximize space. It boasts a variety of wash programs, from quick washes to intensive cycles for stubborn stains. Its built-in water softener prevents mineral deposits, ensuring sparkling clean dishes every time.

Collectively, the Fisher & Paykel dishwasher range reflects a balance of practicality, efficiency, and modern design. Their commitment to sustainability, innovative features, and advanced technologies makes these models a top choice for consumers seeking reliable dishwashing solutions, regardless of their kitchen size or washing needs.