Epa type iii stuvia 2023 - Study guides, Class notes & Summaries

Which of the following refrigerants has a safety classification of B-1 - ANSWER HCFC-123 (R-123) The EPA-required evacuation level for recovery or recycling equipment used on low-pressure systems is - ANSWER 25 mm of Hg absolute. Which organization establishes the refrigerant safety group standard? - ANSWER ASHRAE Where is the purge unit located in a low-pressure system? - ANSWER The top of the condenser. To repair a chiller operating with R-22, the technician; - ANSWER must ha...

a Type III Technician or Universal Technician are certified to do what? - ANSWER Maintain, service, repair, or dispose of low-pressure appliances. Most low pressure appliances are used for what? - ANSWER Most low pressure appliances are used for comfort cooling and are subject to lower allowable leak rate. The owner and/or operator of the equipment is responsible for what? - ANSWER for keeping records of all leaking inspections and any completed leak repair verification tests. It is their ...

A-1 - ANSWER refrigerants CFC-12, HCFC-22, HFC-134a are all classified as type what substances? 15 hg - ANSWER when recovering refrigerant from a medium pressure system with more than 200lbs of refrigerant, recover to a level of? 30% - ANSWER EPA requires that all industrial process refrigeration systems containing more than 50 lbs of refrigerant MUST be repaired when the annual leak rate excceds? pressurize system using controlled hot water - ANSWER whats the most efficient method of l...

A-1 - ANSWER refrigerants CFC-12, HCFC-22, HFC-134a are all classified as type what substances? 15 hg - ANSWER when recovering refrigerant from a medium pressure system with more than 200lbs of refrigerant, recover to a level of? 30% - ANSWER EPA requires that all industrial process refrigeration systems containing more than 50 lbs of refrigerant MUST be repaired when the annual leak rate excceds? pressurize system using controlled hot water - ANSWER whats the most efficient method of l...

Which of the following best describes the refrigerant recovery process from an R-123 system? - ANSWER Start with liquid removal and then switch over to vapor recovery. Under ASHRAE Standard 34, R-134a is classified as; - ANSWER A1 When charging a low-pressure system, refrigerant should be introduced to the system as a vapor to raise the system's saturation temperature to a minimum of; - ANSWER 36 Degrees In a low-pressure chiller, air and other non-condensables collect at the; - ANSWER...