The Nu-Calgon 4287-34 Nickel Safe Ice Machine Cleaner is the industry-standard phosphoric acid-based descaler designed specifically for nickel-plated evaporators. Engineered to meet Manitowoc specification GES-6, this 16 oz. food-grade ice machine cleaner effectively dissolves calcium and magnesium scale deposits without compromising the integrity of sensitive plating. This formula is critical for service technicians maintaining Manitowoc, Hoshizaki, Scotsman, and Ice-O-Matic equipment where traditional cleaners might cause pitting or delamination. The solution features a distinct green indicator dye, providing a visual confirmation of chemical presence during the descaling process and ensuring a thorough rinse-out after the cleaning cycle. With a recommended dilution ratio of 2-3 fl. oz. per gallon of water, this nickel-safe descaler restores heat transfer efficiency and prevents harvest issues caused by scale buildup. It is an essential component for routine preventative maintenance to ensure code compliance and optimal production cycles in commercial refrigeration systems. OEM Approved: Formulated to meet rigorous Manitowoc GES-6 standards for safe use on nickel-plated surfaces. Universal Compatibility: Validated for use in Hoshizaki, Scotsman, and Ice-O-Matic units with tin or nickel evaporators. Non-Corrosive Formula: Phosphoric acid blend removes heavy lime and scale without damaging evaporator plating. Visual Rinse Indicator: Green solution provides clear visual feedback to confirm the system is clean and fully flushed. Concentrated Performance: High-solvency 16 oz. bottle delivers professional-grade cleaning for standard commercial cubers and flakers. Common Questions Is Nu-Calgon 4287-34 safe for all ice machine brands? Yes, it is specifically formulated for nickel-safe ice machine cleaning across all major brands, including those with sensitive nickel-plated or tin-plated evaporator plates that would be damaged by standard cleaners. How do I know when the cleaner is fully rinsed? The Nu-Calgon 4287-34 utilizes a green color indicator. Once the effluent runs clear and the pH returns to neutral, the system is sufficiently rinsed and ready for production. What is the proper dilution ratio for heavy scale? For standard ice machine descaling, use 2 to 3 ounces of cleaner per gallon of water. For extremely heavy lime deposits, a secondary cleaning cycle may be required rather than increasing the concentration. Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.