Whirlpool  DU810SWPT User Instructions page 5

Built-in dishwasher use & care guide
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Dishes do not dry completely
Dishes do not dry completely
Did you use a rinse aid? Your dishwasher is designed to use
rinse aid for good drying performance. Without rinse aid your
dishes and dishwasher interior will have excessive moisture.
The heat dry option will not perform as well without rinse aid.
Dishes are not dry
Did you load your dishwasher to allow proper water drainage?
Do not overload. Use a liquid rinse aid to speed drying.
Are the plastics wet? Plastics often need towel drying.
Is the rinse aid dispenser empty?
Did you use an air-dry or energy-saving dry option? Use a
heated drying option for dryer dishes.
Excess moisture on racks and dishwasher interior
Check the rinse aid indicator to see that there is rinse aid in the
dispenser.
Spots and stains on dishes
Spotting and filming on dishes
Is your water hard, or is there a high mineral content in your
water? Conditioning the final rinse water with a liquid rinse aid
helps eliminate spotting and filming. Keep the rinse aid
dispenser filled. Always use a high-temp option. If your water
hardness is 13 grains or above, it is strongly recommended that
you install a home water softener. If you do not wish to drink
softened water, have the softener installed onto your hot water
supply.
Is the water temperature too low? For best dishwashing results,
water should be 120°F (49°C) as it enters the dishwasher.
Did you use the correct amount of effective detergent? Use
recommended dishwasher detergents only. Do not use less
than 1 tbs (15 g) per load. Detergent must be fresh to be
effective. Heavy soil and/or hard water generally require extra
detergent.
Is the home water pressure high enough for proper dishwasher
filling? Home water pressure should be 20 to 120 psi (138 to
828 kPa) for proper dishwasher fill. If you have questions about
your water pressure, call a licensed, qualified plumber.
NOTE: To remove spots and film from glassware, remove all
silverware and metal items and run a vinegar rinse as described
in "Dishwasher Care."
Silica film or etching (silica film is a milky, rainbow-colored
deposit; etching is a cloudy film)
Sometimes there is a water/chemical reaction with certain
types of glassware. This is usually caused by some
combination of soft or softened water, alkaline washing
solutions, insufficient rinsing, overloading the dishwasher, and
the heat of drying. It might not be possible to avoid the
problem, except by hand washing.
To slow this process use a minimum amount of detergent but
not less than 1 tbs (15 g) per load. Use a liquid rinse aid and
underload the dishwasher to allow thorough rinsing. Silica film
and etching are permanent and cannot be removed. Do not use
heated drying.
White spots on cookware with nonstick finish
Has the dishwasher detergent removed cookware seasoning?
Reseason cookware after washing it in the dishwasher.
Brown stains on dishes and dishwasher interior
Does your water have high iron content? Rewash dishes using
1-3 tsp (5-15 mL) of citric acid crystals added to the covered
section of the detergent dispenser. Do not use detergent.
Follow with a Normal wash cycle with detergent. If treatment is
needed more often than every other month, the installation of
an iron removal unit is recommended.
Black or gray marks on dishes
Are aluminum items rubbing dishes during washing?
Disposable aluminum items can break down in the dishwasher
and cause marking. Hand wash these items. Remove
aluminum markings by using a mild abrasive cleaner.
Orange stains on plastic dishes or dishwasher interior
Are large amounts of tomato-based foods on dishes placed in
the dishwasher? It may be necessary to use a stain removal
product to remove stains from your dishwasher. Stains will not
affect dishwasher performance.
Noises
Grinding, grating, crunching or buzzing sounds
A hard object has entered the wash module (on some models).
When the object is ground up, the sound should stop. If the
noise persists after a complete cycle, call for service.
Dishes are not completely clean
Food soil left on the dishes
Is the dishwasher loaded correctly?
Did you choose the cycle that describes the most difficult soil in
your dishwasher? If you have some items with heavier soils,
use a heavier cycle.
Is the water temperature too low? For best dishwashing results,
water should be 120°F (49°C) as it enters the dishwasher.
Did you use the correct amount of fresh detergent? Use
recommended dishwasher detergents only. Do not use less
than 1 tbs (15 g) per load. Detergent must be fresh to be
effective. Heavy soil and/or hard water generally require extra
detergent.
Is detergent caked in dispenser? Use fresh detergent only. Do
not allow detergent to sit for several hours in a wet dispenser.
Clean dispenser when caked detergent is present.
Is the pump or spray arm clogged by labels from bottles and
cans?
Is the home water pressure high enough for proper dishwasher
filling? Home water pressure should be 20 to 120 psi (138 to
828 kPa) for proper dishwasher fill. If you have questions about
your water pressure, call a licensed, qualified plumber.
Are high suds slowing the wash arm? Do not use soap or
laundry detergents. Use recommended dishwasher detergents
only.
Dishes are damaged during a cycle
Chipping of dishes
Did you load the dishwasher properly? Load the dishes and
glasses so they are stable and do not strike together from
washing action. Minimize chipping by moving the rack in and
out slowly.
NOTE: Antiques, feather-edged crystal, and similar types of
china and glassware might be too delicate for automatic
dishwashing. Wash by hand.
5

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