Rust stains in a dishwasher can occur due to scratches or chips in the interior finish or on the dish racks. Cleaning these stains and repairing the damaged areas can prevent further staining and extend the life of your dishwasher.
Caution: Please read our safety information before attempting any testing or repairs.
Important Safety Notice: Before cleaning or repairing the dishwasher, unplug the appliance or shut off the power at the fuse box or breaker panel to avoid an electrical shock hazard. Follow the directions for use and safety on all cleaning products and repair compounds.
Tools and Materials Needed
- Oxalic acid (available at hardware stores)
- Water
- Latex gloves
- Scrub brush
- Fine abrasive (such as emery cloth)
- Enamel patching compound (for interior walls, ceiling, or tub)
- Rubber/vinyl patching compound (for glass or dish racks)
- Cotton swab or provided applicator
Steps to Clean Rust Stains
Step 1: Safety First
- Turn Off Power: Ensure that the dishwasher is unplugged or the circuit breaker is turned off to prevent any electrical shock.
- Wear Protective Gear: Wear latex gloves to protect your skin and follow all of the manufacturer’s safety precautions when working with oxalic acid.
Step 2: Prepare the Cleaning Solution
- Mix Oxalic Acid Solution: Follow the manufacturer’s instructions for mixing oxalic acid with water to create a cleaning solution. Oxalic acid is commonly used as a wooden deck cleaner and is effective for removing rust stains.
Step 3: Clean the Rust Stains
- Dip Scrub Brush: Dip a scrub brush into the oxalic acid solution.
- Scrub the Stains: Scour the rust stains with the scrub brush. As you scrub, look for any damage that might be the source of the stains.
Steps to Repair Rust Damage
Step 1: Locate the Source of the Rust
- Inspect the Interior: Check the walls, ceiling, tub, and dish racks for any scratches or chips that might be causing the rust stains.
Step 2: Prepare the Surface
- Remove Existing Rust: Use a fine abrasive, such as emery cloth, to clean and smooth the surface. It may be necessary to enlarge the damaged area slightly to ensure a good bond for the patching material.
Step 3: Apply Patching Compound
- Select the Right Compound:
- Enamel Patching Compound: Use for damage on the interior walls, ceiling, or tub.
- Rubber/Vinyl Patching Compound: Use for damage on the glass or dish racks.
- Apply the Compound: Follow the manufacturer’s instructions for applying the patching compound. Typically, the compound is applied with a cotton swab or a provided applicator.
- Allow to Cure: Allow the compound to cure completely before applying a second coat if necessary. Do not use the dishwasher until the compound has fully cured.
Step 4: Restore Power
- Turn On Power: Once the repairs are complete and the compound has cured, restore power to the dishwasher by plugging it back in or turning the circuit breaker back on.
Tips and Warnings
- Follow Safety Guidelines: Always follow the manufacturer’s safety guidelines when working with cleaning solutions and patching compounds.
- Ensure Proper Ventilation: Work in a well-ventilated area when using oxalic acid and other chemicals.
- Consult the Manual: Refer to your dishwasher’s user manual for specific instructions related to your model.
- Seek Professional Help: If you are unsure about any step or if the problem persists, consider seeking help from a professional technician.
By following these steps, you can effectively clean and repair rust stains in your dishwasher, ensuring it operates efficiently and looks good as new. Regular maintenance and timely repairs will help extend the lifespan of your appliance.
