Diagnosis
The "plastic" or "vinegar" taste in Della Portable Ice Makers is typically caused by one of three factors: off-gassing from the food-grade plastics during the first 50 hours of operation, residual acetic acid from a previous descaling cycle, or the development of a microbial biofilm within the internal water reservoir and delivery tubes. Because these machines use a "flash-freeze" method where water is sprayed onto aluminum cooling pins, any contaminant in the water or residue on the pins is instantly trapped inside the ice cube. If the taste is specifically vinegary, it is almost certainly a failure to fully flush the system after using a vinegar-based descaler. The acetic acid clings to the narrow internal tubing and the pump housing. If the taste is "chemical" or "plastic," it is likely the result of the factory lubricants or the initial curing process of the plastic molds. You can confirm this by filling the reservoir with distilled water; if the taste persists, the issue is residue on the cooling pins or internal lines rather than your tap water source.
How to Fix It
To eliminate these tastes, you must perform a deep-neutralization flush. A simple rinse is insufficient because the residue hides in the pump mechanism.
- The Neutralization Wash: Mix 2 tablespoons of food-grade baking soda into one gallon of warm (not boiling) distilled water. Stir until completely dissolved.
- The Saturation Cycle: Fill the reservoir to the "MAX" line with this baking soda solution. Run the machine through three complete freeze cycles. Do not discard the ice immediately; let the ice sit in the basket for 30 minutes to allow the alkaline solution to neutralize any acidic residue on the cooling pins.
- The Mechanical Flush: Discard all baking soda ice. Fill the reservoir with fresh, filtered water. Run the machine for 5 full cycles. This is critical because the baking soda leaves a salty film that must be rinsed away to avoid a "soapy" taste.
- The Air Dry: Unplug the unit and leave the lid open for 2 hours. This allows any trapped moisture in the crevices of the ice basket to evaporate, preventing the "musty" smell that often mimics a plastic taste.
If That Didn't Work
- Switch to Distilled Water: If you have hard water (high calcium/magnesium), the minerals react with the plastic components and the cooling pins, creating a metallic or chemical taste. Use 100% distilled water for 48 hours. If the taste disappears, your local water chemistry is the culprit.
- Deep Clean the Cooling Pins: Use a soft-bristled toothbrush dipped in a mixture of lemon juice and water to gently scrub the aluminum cooling pins. Be extremely careful not to scratch the surface, as scratches create pits where biofilm and bacteria can hide, leading to a permanent "swampy" taste.
- Replace the Water Source: If you are using a water pitcher or fridge filter, the filter may be saturated and leaching chemicals. Try a different water source to isolate whether the taste is coming from the machine or the input.
- Check for External Contamination: Ensure the machine is not placed under a kitchen cabinet where odors (like spices or cleaning chemicals) can be absorbed by the plastic housing and seep into the ice basket.
Heads Up
- Avoid Harsh Chemicals: Never use bleach or strong dish soaps inside the reservoir. These chemicals can degrade the seals in the internal pump, leading to leaks and a permanent chemical taste in the ice.
- Empty the Reservoir Daily: Do not leave water sitting in the machine for more than 24 hours. Stagnant water promotes biofilm growth in the small tubes, which causes that "weird" taste to return even after a deep clean.
- The First 5 Batches Rule: Whenever you move the machine or restart it after a long break, always discard the first 5 batches of ice to clear out any settled dust or stagnant water.
- Temperature Control: Ensure the machine has at least 6 inches of clearance on all sides. If the machine overheats, the plastic components can off-gas more aggressively, imparting a plastic taste to the ice.