Whirlpool DU7500XR Series Use & Care Manual page 13

Undercounter dishwasher
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PROBLEM
Dishes
not
washing
clean
Cloudy
tllm on
glassware,
etching
-
permanent
corrosion
Dlshes
IL
lnterlor
ot
dlshwasher
yellow
or
brown
Rust spots
on
stalnless
steel
-OR-
Dark
spots
on
flatware
-
stalnless
steel,
silver
plate,
or
sterllng
Bronze tarnish
on silverplate
Water
lett in
bottom
of
dishwasher
CAUSED BY
Water is not
hot enough
Improper
loading
Spray
arm or arms not
rotating
freely
Not enough
detergent
or improper
detergent
"0ld"detergent.
Water pressure
may
be low, dishwasher
is
not filling
properly
Too much detergent
in soft water
Inadequate
rinsing
Iron or manganese
in
water
Allowing
salty or
acidic
foods such as
mayonnaise,
vinegar,
fruit juices,
salad
dressings,
milk
products
to remain
on
flatware.
Undissolved
detergent
coming
in
contact
with flatware
Silverplate
is worn off.
Exposed
base metal
to kes on a bronzed
hue.
Dishwasher
cycle
not
completed
Clogged
drain
air
gap
SOLUTION
Water
temperature
should
be at least
14O'F (60°C).
Set
water
heater
thermostat
to a higher
setting
Run water
at
sink until
hot before
starting
and/or
use HI-TEMP WASH
Option.
Make
sure dashes and
glassware
are loaded
so sproy
reaches
all surfaces
and items drain
properly
Do not ov-
erload.
Do not nest items
Moke
sure large
items do not block
spray
from reaching
detergent
dispensers.
Check
spray
arms to make
sure they turn freely
after load-
ing. Be sure a utensil
has not prevented
their turning.
Use more dishwasher
detergent.
Use detergent
with high-
est available
phosphorus
content...especially
with hard
water.
Use only
fresh dishwasher
detergent.
Store tightly
closed
box or bottle,
in cool, dry place.
Discard
old detergent.
Do
not fill dispensers
until ready
to start dishwasher.
If water
pressure
is low, do not use water
for other purposes
while
dishwosher
is running
[to assure correct
fills].
Check
for rainbow
hue on glasses.
A rainbow
hue IS the
first sign of etching
(corrosion
of glass]. Reduce
the amount
of dishwasher
detergent.
Use a detergent
with
a lower
phosphorus
content.
If water
pressure
is low do not use water
for other purposes
while
dishwasher
is running
[to assure
correct
water
fills).
Make
sure dishes
and glassware
are loaded
properly
to
assure adequate
rinsing
and draining.
Do not overload
Temporary
remedy:
I. Set empty
dishwasher
for a "one wash"
cycle.
2. Start dishwasher
and unlatch
door to stop It when
it has
filled
for the wash part of the cycle.
3. Add
'4 to '/2 cup (120 to 240 ml] of citric
acid
crystals
(usually
available
in drugstores).
4. Close and latch
door to complete
cycle.
Permanent
solution:
Install
an iron or manganese
filter to
home water
supply
Rinse flatware
that
is to stand
for several
hours
before
washing
(use Rinse & Hold). Clean
stained
items with silver
polish
and
re-wash.
Do not put stalnless
steel
and sllver
flatware
In the same
sllverware
basket
compartment.
Direct
contact
between
these
metals
can cause
perma-
nent damage
to the sllver.
Remove
spots with silver polish. Avoid spilling
concentrated
detergent
on wet flatware.
Remove
tarnish
with silver polish.
Have silver replated
Allow
dishwasher
to complete
cycle
Some plumbing
codes
require
use of a drain
oir gap
be-
tween
an undercounter
dishwasher
and the drain
system
of the house.
The air gap
is usually
located
above
the sink
or on the top of the counter
near the dishwasher
to prevent
the possibility
of water
backing
up from the drain
into the
dishwasher
due to a plugged
drain.
The drain
air gap
is
NOT a part of the dishwasher
and
is NOT covered
by the
dishwasher
warranty.
The drain
air gap
should
be kept
clean
to insure proper
draining
of the dishwasher

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