Roper RUD3000 User Manual

Is the water temperature too low? If needed, turn home water 
heater up to ensure water entering dishwasher is at least 
120°F (49°C). Refer to the “Dishwasher Efficiency Tips” 
section.

Did you use the correct amount of fresh detergent? Use 
recommended dishwasher detergents only. Refer to the 
“Detergent Dispenser” section. Never use less than 1 tb (15 g) 
per load. Detergent must be fresh to be effective. Store 
detergent in a cool, dry area. 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? If you wash bottles and cans in your dishwasher, check 
for labels clogging the pump or spray arm. 

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. A booster 
pump on the water supply can be added if pressure is too 
low.

Are high suds slowing the wash arm? Never use soap or 
laundry detergents. Use recommended dishwasher 
detergents only. 

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Is the bottom rack in backwards? The rack bumpers must 
face the dishwasher door.

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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.

Is the water temperature too low? If needed, turn home 
water heater up to ensure water entering dishwasher is at 
least 120°F (49°C). Refer to the “Dishwasher Efficiency 
Tips” section.

Did you use the correct amount of effective detergent? Use 
recommended dishwasher detergents only. Refer to the 
“Detergent Dispenser” section. Never use less than 1 tb (15 g) 
per load. Detergent must be fresh to be effective. Store 
detergent in a cool, dry area. 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. A booster 
pump on the water supply can be added if pressure is too 
low. 

NOTE: To remove spots and film from dishes, try a white 
vinegar rinse. This procedure is intended for occasional use 
only. Vinegar is an acid and using it too often could damage 
your dishwasher.

1. Wash and rinse dishes. Use an air-dry or an energy-

saving dry option. Remove all silverware or metal items.

2. Put 2 cups (473 mL) white vinegar in a glass or 

dishwasher-safe measuring cup on the bottom rack.

3. Run the dishwasher through a complete washing cycle 

using an air-dry or an energy-saving dry option. Do not 
use detergent. Vinegar will mix with the wash water.

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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.

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Has the dishwasher detergent removed cookware 
seasoning? Reseason cookware after washing in the 
dishwasher.

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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.

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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.

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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.

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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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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.