Certification Types
What minimum percentage score is required to pass any closed-book EPA Section 608 exam?
What is 72%?
Which chemical element present in CFCs and HCFCs causes the destruction of stratospheric ozone?
What is chlorine?
When recovering refrigerant from a small appliance with an operating compressor, what percentage must be recovered?
What is 90%?
What is the allowable annual leak rate for comfort cooling appliances containing 50 lbs or more of refrigerant?
What is 10%?
Low-pressure appliances are charged with refrigerants having a boiling point above what temperature at atmospheric pressure?
What is 50°F (10°C)?
Which EPA certification covers low-pressure appliances like chillers charged with R-123?
What is Type III Certification?
What international agreement was established to phase out the production of ozone-depleting substances?
What is the Montreal Protocol?
What percentage of refrigerant must be recovered from a small appliance if its compressor is inoperative?
What is 80%?
What is the allowable annual leak rate for commercial refrigeration equipment containing 50 lbs or more of refrigerant?
What is 20%?
What phase of refrigerant (liquid or vapor) should be recovered first to speed up the recovery process on a chiller?
What is liquid refrigerant?
How many total questions are on the Type IV Universal certification exam?
What is 100 questions?
What term describes the process of removing refrigerant in any condition and storing it in an external container without testing or processing?
What is recovery?
What type of recovery device relies on the compressor in the appliance or system pressure rather than its own compressor?
What is a system-dependent (or passive) recovery device?
What is the maximum allowable annual leak rate for industrial process refrigeration equipment with 50 lbs or more of charge?
What is 30%?
To what temperature (°F) must oil be heated before removal from a low-pressure system to minimize refrigerant release?
What is 130°F (90°C)?
What level of certification allows a technician to work on all equipment except motor vehicle ACs?
What is Type IV (Universal) Certification?
What is the maximum percentage by weight that a recovery cylinder can be safely filled?
What is 80%?
When recovering from a small appliance with an inoperative compressor, how many access valves must be installed?
What are two (both high-side and low-side)?
System-dependent recovery equipment is prohibited on Type II systems containing more than how many pounds of refrigerant?
What is 15 pounds?
When recharging a low-pressure chiller, why must refrigerant vapor be introduced before liquid?
What is to prevent freezing of water in the tubes?
Type I certification applies to what specific classification of appliances?
What are small appliances?
Which non-flammable gas should be used along with a pressure regulator for system leak detection instead of oxygen or compressed air?
What is nitrogen?
What fitting should be removed at the conclusion of service on a small appliance?
What are solderless access fittings?
Using post-1993 equipment, what evacuation level (in. Hg vacuum) is required for a high-pressure appliance with 200+ lbs of charge?
What is 10 in. Hg vacuum?
What absolute pressure level in mm Hg is required when evacuating a low-pressure appliance using post-1993 equipment?
What is 25 mm Hg absolute?