DuPont™ Suva® HP81 is an HCFC retrofit refrigerant for R-502 in limited applications where a 10°F to 20°F (5.5°C to 11°C) increase in compressor discharge temperature is desirable, such as some ice machines and other self-contained systems. Field experience has shown that no oil change is needed in many unitary and close-coupled systems.
R-402B; A1 Safety Classification
- Works with existing mineral oil (MO) in many unitary and close-coupled systems.
- Alkylbenzene (AB) oil is recommended for optimum oil return.
- One compressor oil change to AB will typically remove 50% to 80% of the existing MO, which satisfies the recommendations and requirements of most compressor manufacturers; 10% to 25% less refrigerant is needed. See retrofit guidelines for full details.
Consult the specific regulations in your country or region.
AB or MO