A low-temperature refrigeration system needs a replacement compressor. Which selection method is technically sound?
- ASelect any rotary compressor because all rotary models suit low temperatures.
- BUse only the cabinet floor area to choose compressor type.
- CChoose the highest motor horsepower without checking refrigerant compatibility.
- Match the refrigerant, required capacity and evaporating/condensing conditions to an approved operating envelope.
Where to look it up
https://www.copeland.com/en-us/products-solutions/compression-technologies-systems/semi-hermetic-compressors
Why D is correct
Compressor type alone does not establish suitability. Copeland identifies capacity, refrigerant and evaporating/condensing conditions as selection inputs. Verify the selected model at the intended duty point.