Hermetic compressors require specific synthetic oils for lubrication. The HPKD190A is pre-filled at the factory with a specific volume and type of oil (typically Polyolester or Mineral oil formulated specifically for R600a). The PDF dictates the exact volume, which is crucial if you are flushing the system or replacing a burnt-out compressor where contaminated oil must be completely evacuated. 4. Capillary Tube Sizing
Based on standard naming conventions, the "D" in HPKD190A usually stands for Diode or Dual Diode . However, verify this in the PDF’s "Product Type" field. If it says "Thyristor," it is an SCR. Hpkd190a Pdf