Fisher & Paykel DD603(I) - Rinse Aid Function and Settings; Purpose of Rinse Aid;Agent; Rinse Aid Settings

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Rinse aid/agent is required to accelerate the drying period and increase the shine of dishes at the
end of the wash programme.
Rinse aid is an integral part of the dishwashing process. It performs an equally important function
as the dishwasher detergent itself. Rinse aid breaks down the surface tension of the final rinse
water. It allows the water to sheet off evenly and quickly to prevent water clinging in droplets and
drying up as water spots. The sheeting action of the rinse aid minimises spotting, filming and helps
with the drying process. It is particularly useful if you want dry dishes when the Eco programs are
used.
Rinse aid/agent contains non ionic surfactants that decrease the surface tension of water. The
water will run off in a thin film off the dishes without streaks. The more water that runs off the
dishes the better the rinse effect. When water is left to dry naturally on dishware and particularly
glasses it leaves behind water soluble minerals and lime scale on the surface producing streaks. An
example of this when you wash a glass by hand leave it drip dry, streaks are formed and are removed
by a tea towel. Rinse Aid/Agent is in effect like a clean tea towel, it dries the glass and removes
streaks/marks.
Rinse aid/agent also contains organic fruit acids eg citric acid, which dissolve mineral salts and lime
scale. The rinse aid/agent also neutralises the alkalinity of detergent that may remain in the final
rinse.
Other additives in the rinse aid/agent are preservatives, dissolving aids, stabilisers, foam regulators
and perfumes.
Rinse Aid Settings
It is important to ensure that your rinse aid setting is correct, you may need to experiment to get to
the best results. However if you are in a hard water area, you may want to increase the rinse aid
setting to 4-5. If you are in a soft water area setting of 1-2 may be adequate. If your dishes are
still wet, increase the rinse aid setting. If you notice a lot of foaming decrease the rinse aid setting.
Rinse Aid Spillages
It is very important when filling the rinse aid dispenser ensure you wipe any spillages immediately.
Failure to do so may result in service call. What will happen is foam will find the vent hole at the
back of the DishDrawer® and dribble onto the flood switch, hence causing a F1 fault.