Approved refrigerant - Study guides, Class notes & Summaries

written z51 Exam Questions With verified Solutions The efficiency of the refrigerant cycle is affected by the operation of the condenser. of the following. a more efficient centrifugal compressor operation results from: - ANS Lowering the condensing pressure The heat removed from the refrigerant in a condenser is: - ANS Sensible and latent heat The refrigerant unit that you have been assigned to is being taken out of service for a major repair. you have been assigned to withdraw re...

EPA 608 Practice exam type 1 solved correctly The sale of reclaimed CFC, HCFC, HFC, and HFO refrigerants is_______. Restricted to technicians who are EPA certified and refrigerant recovery A small Pliance is defined as a system that is Manufactured, fully charged, and hermetically sealed in a factory with a charge of 5 pounds or less A __________ recovery device can be use for type 1 small appliance applications or type 2 applications if the total charge is below 15 pounds. System dependent Y...

When two or more refrigerants are mixed, what must be done with the mixture? Send off-site to EPA certified reclaimer for reclamation or destruction Which SAE Standard(s) must be referred to on the label of approved HFC-134a refrigerant recycling machines? SAE J2210 or SAE J2788 When it has been determined that an A/C system has a low refrigerant charge, what should be done? Perform a leak test procedure Which item is not mentioned in the SAE J1991 standard of refrigerant purity? ...

EPA Certification Exam (2023/ 2024 Update) Practice Questions and Verified Answers| 100% Correct| Graded A QUESTION A ternary blend is Answer: a three-part blend. QUESTION What type of oil does a ternary blend use? Answer: alkylbenzene QUESTION Which of the following is considered a "system-dependent" (passive) recovery? Answer: using the appliance compressor to remove refrigerant QUESTION Which of the following is considered a "self-c...

HVAC: EPA 608 Certification Exam Questions and Answers Latest Updated 2024/2025 (GRADED) Are there drop-in replacements for R-12 systems? Why or why not? CORRECT ANSWERNo 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? CORRECT ANSWEREster based oils and they do not mix with other oils What type of lubricant is used with HCFCs? CORRECT ANSWERAlkylbenzene lubricant What is diffe...

Removing refrigerant in any condition from a system and storing it in an external container without necessarily testing or processing it in any way defines A) Recycling B) Recovering C) Reclaiming D) Restoring - B) Recovering One should NEVER heat a refrigerant storage or recovery tank with an open flame because: A) it can result in venting refrigerant to the atmosphere B) the tank may explode, causing serious injury to people nearby C) refrigerant in the tank may decompose, f...

Z51 Written UPDATED Exam Questions and CORRECT Answers The efficiency of the refrigerant cycle is affected by the operation of the condenser. of the following. a more efficient centrifugal compressor operation results from: - Correct AnswerLowering the condensing pressure The heat removed from the refrigerant in a condenser is: - Correct Answer- Sensible and latent heat The refrigerant unit that you have been assigned to is being taken out of service for a major repair. you have been...

EPA Certification Exam |Questions and Verified Answers| 100% Correct| Graded A (New 2023/ 2024 Update) QUESTION Which best describes the definition of Type 1 "small appliance" as defined by EPA? Answer: Systems manufactured, charged and hermetically sealed with five (5) pounds or less of refrigerant QUESTION For small appliances use, the recovery equipment manufactured after November 15, 1993, must be capable of recovery: Answer: 80% of the refrigerant when t...

HVAC: EPA 608 Certification Exam Questions and Answers Latest Updated 2024/2025 (GRADED) Are there drop-in replacements for R-12 systems? Why or why not? CORRECT ANSWERNo 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? CORRECT ANSWEREster based oils and they do not mix with other oils What type of lubricant is used with HCFCs? CORRECT ANSWERAlkylbenzene lubricant What is diffe...

To recover refrigerant is to: - Remove refrigerant is any condition from a system in either an active or passive manner, and store it in an external container without necessarily testing or processing. The required evacuation level for recovering refrigerant from a low pressure appliance with a recovery machine manufactured AFTER November 15, 1993 is: - 25 mm Hg absolute The process that reduces contaminate in used refrigerant by oil separation with single and multiple passes through device...