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The Nu-Calgon NUCAL-4300-09 is an HFC-based solvent flush kit designed to clean refrigeration and air-conditioning systems before returning them to service. The RX11 flush formulation removes sludge, carbon residue, compressor oils, acids, moisture, and other particulate from refrigerant circuits. Weighing 1 pound and packaged in a pressurized canister, it is ready to use without additional mixing or dilution. HVAC technicians reach for this kit after compressor burnouts, refrigerant retrofits, and line-set preparations for R-410A conversions where contamination must be fully cleared before recharging.
This flush kit is suited for residential and light commercial refrigeration and air-conditioning applications where system contamination has occurred. It is most commonly applied following a compressor burnout, when acids, carbon, and sludge are distributed throughout the refrigerant circuit. It is also used during refrigerant retrofit projects to prepare line sets and system components for the new refrigerant. Licensed HVAC and refrigeration technicians use this product as part of a complete system cleanup and restoration procedure.
Designed for use in refrigeration and air-conditioning systems requiring solvent flushing after compressor burnout, refrigerant retrofit, or line-set contamination events.
This product is intended for use by licensed HVAC and refrigeration technicians. Recover all refrigerant from the system in accordance with EPA Section 608 regulations before flushing. Ensure adequate ventilation in the work area when handling solvent-based flush products. Flush residue must be fully purged from the system with dry nitrogen before recharging with refrigerant.
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