Filter Module - Whirlpool DU948 Use And Care Manual

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 prevent the
problem, except by hand washing.
To slow this process use a minimum amount of detergent but
not less than 1 tb (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 non-stick finish
Has the dishwasher detergent removed cookware
seasoning? Reseason cookware after washing 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? Stains can gradually fade over time.
Regular use of heated drying will slow fading. Stains will not
affect dishwasher performance. Regular use of a rinse cycle
and an air-dry or energy-saving dry option will reduce the
likelihood of staining.
Dishes do not dry completely
Dishes are not dry
Did you load your dishwasher to allow proper water
drainage? Do not overload. Refer to the "Dishwasher
Loading" section. Use a liquid rinse aid to speed drying.
Are the plastics wet? Plastics often need towel drying.
Is the rinse aid dispenser empty? Refer to the "Rinse Aid
Dispenser" section.
Did you use an air-dry or energy-saving dry option? Use a
heated drying option for dryer dishes.
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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.
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.

FILTER MODULE

The washing system parts covered by your warranty are
shown below.
1. Top spray
2. Water tube
3. Upper spray arm
4. Nut
5. Bearing
6. Lower spray arm
7. Seal
8. Filter module and motor
9. Tuned sound absorber
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