Whirlpool DU9400XT Series manual Caused by

PROBLEM

Dlshes not washing clean

Cloudy film on glassware, etching - permanent corrosion

Dlshes & interlor of dlshwasher yellow or brown

CAUSED BY

Water is not hot enough

Improper loadtng

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 rn soft water

Inadequate rrnsrng

Iron or manganese in water

SOLUTION

Water temperature should be at least 14O’F (6O”CJ. Set water heater thermostat to a higher settrng. Run water at

sink until hot before starting and/or use HI-TEMP WASH Optron

Make sure dishes and glassware ore loaded so spray

reaches all surfaces and items drain properly Do not ov- erload Do not nest items

Make sure large items do not block spray from reaching detergent dispensers

Check spray arms to make sure they turn freely clter locd- ing Be sure a utensrl has not prevented theirturnrng

Use more dishwasher detergent. Use detergent with high-

est available phosphorus content ..especrally with hard water

Use only fresh dishwasher detergent. Store tightly closed container, 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 dishwasher IS running (to assure correct fills)

Check for rarnbow 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 c 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 ore loaded properly to

cssurecdequcte rinsing and draining. Do not overload

Temporary remedy:

1 Set empty dishwasher for a “one wash” cycle

2 Start dishwasher and unlatch door to stop it when it has filled forthe wash part of the cycle

3Add ‘4 to ’ J cup (120 to 240 ml) of citric acid crystals

(usually available in drugstores]

4Close and latch door to complete cycle

Permanent solution: Instoll an iron or manganese filter to home water supply

Rust spots on stalnless steel -OR-

Dark spots on flatware - stalnless steel, sllver plate, or sterllng

Bronze tarnish on silverplate

Water left in bottom of dishwasher

Allowing salty or ccrdrc foods such OS

mayonnaise, vrnegcr, frurt juices, salad dressings, milk products to remarn on flatware

Undissolved

detergent coming rn contact with flatware

Srlverplate 1sworn off Exposed base metal to kes on a bronzed hue.

Dishwasher cycle not completed

Clogged drain err gcp

Rinse flatware that IS to stand for several hours before wcshrng [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 dishwcsherto complete cycle

Some plumbing codes require use of a drain air 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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