HVAC: EPA 608 Certification Study Guide {Questions With 100% Correct Answers} (2024 / 2025) (Verified by Expert
Are there drop-in replacements for R-12 systems? Why or why not? - ANSWER No because the new refrigerants are incompatible with the oils and lubricants used in R-12 systems. What type of oil is used in R-134a and what oils will it mix with? - ANSWER Ester based oils and they do not mix with other oils What type of lubricant is used with HCFCs? - ANSWER Alkylbenzene lubricant What is difference b/w ternary blend a azeotropic blend? - ANSWER Ternary blends are three-part mixtures whereas azeotropic blends are blends of two or more compounds that act like a single compound. What is the trait of a hygroscopic lubricant? - ANSWER It absorbs (takes on) moisture
Geschreven voor
- Instelling
- HVAC: EPA 608 Certification
- Vak
- HVAC: EPA 608 Certification
Documentinformatie
- Geüpload op
- 17 maart 2024
- Aantal pagina's
- 9
- Geschreven in
- 2023/2024
- Type
- Tentamen (uitwerkingen)
- Bevat
- Vragen en antwoorden
Onderwerpen
-
hvac epa 608 certification study guide questions
-
are there drop in replacements for r 12 systems w
-
what type of oil is used in r 134a and what oils w
-
what type of lubricant is used with hcfcs answe
Ook beschikbaar in voordeelbundel