Whirlpool DP920QWDB3 Use And Care Manual page 23

PROBLEM CAUSE SOLUTION
Spotting Incorrect amount
and filming of detergent
(continued)
Use of ineffective
detergents
Insufficient fill due to
low water pressure
Cycle takes Water temperature
extremely is too low
long time
Follow recommendations on page 10 for
amount. Heavy soil and/or hard water
generally require extra detergent.
Use fresh detergent. Store detergent tightly
closed in a cool, dry place. Discard lumpy
detergent.
Home water pressure should be 20 to 120
psi for proper dishwasher fill. A booster
pump on the water supply may be neces-
sary if pressure is too low.
Dishwasher is not
installed properly
If needed, turn home water heater up to
ensure water entering dishwasher is 120°F
(49°C) minimum. See "To check water
temperature" on page 21.
Undercounter dishwashers require ad-
equate enclosure for proper operation. See
Installation Instructions for complete
information.
Dishes do not
dry completely
Dishes do not drain
properly
Plastics
Dishes must have proper water drainage.
Do not overload. Follow instructions for
loading dishwasher on pages 6-9. Use a
liquid rinse agent to speed draining.
Some plastics, due to material, may
need to be towel dried.
Silica film or
etching
(silica film is a
white iridescent
deposit; etching
is a cloudy film)
Water chemical
reaction with certain
types of glassware -
usually caused by
some combination of
soft or softened water,
alkaline washing
solutions, insufficient
rinsing, overloading
the dishwasher, and
heat of drying.
Black or gray
marks on dishes
White spots on
cookware with
non-stick finish
Aluminum items
touching dishes
It may not be possible to prevent problem,
except by hand washing. To slow this
process, use a minimum amount of deter-
gent but not less than one tablespoon per
load. Use a liquid rinse agent and
underload the dishwasher to allow thorough
rinsing. Silica film and etching are perma-
nent and cannot be removed. Use the AIR
DRY option.
Seasoning removed by
dishwasher detergents
Load aluminum items so that they will not
rub against dishes during washing. Do not
wash throwaway aluminum items in the
dishwasher because they may break down
and cause marking. Remove aluminum
markings by using a mild abrasive cleanser.
Reseason cookware after dishwasher
washing.
continued on next page
23