PA-608 Type 2 actual exam 2024 with 100% correct answers(download to pass).

Industrial process and refrigeration units with a 50 pound charge or more with an annualized leak rate of _____ or more must have leaks repaired. 35% Unless plans are made to replace a system exceeding the maximum leak, repairs must be made in; 30 days Refrigerants CFC R-12, HCFC R-22, and HFC 134a are all classified as; type A- 1 All Refrigeration & HVAC systems are protected by a; pressure relief valve A refrigerant sensor which will sound an alarm and automatically start a ventilation system in occupied equipment rooms fall under; ASHRAE 15 Non-condensables will cause; higher discharge pressure A crankcase heater is often used to prevent refrigerant from migrating to the oil during periods of: low ambient temperature EPA regulations state that maintenance, service or repair involving the removal of the following component is a "major repair" compressor What refrigerant can be used as a trace gas when checking for leaks? R410A What can be done with the refrigerant trace gas and nitrogen after the leak is found? recover in a special tank High pressure appliances can be evacuated to atmospheric pressure (O psig) when There is a leak If a high pressure appliance containing 100 lbs. of an HCFC OTHER THAN R-22 refrigerant Recovery and/or Recycling equipment manufactured after November 15, 1993 must be evacuated to a level of; 10 inches of vacuum When dehydrating a system it should be evacuated to a level of; 500 microns When recovering from a system with a refrigerant leak, recover to a level of; 0 psig When using a recovery system manufactured after November 15, 1993 on a system containing 100 lbs. of R-502 must be evacuated to; 10 inches of mercury If a high pressure appliance containing 210 lbs. of R-22 refrigerant Recovery and/or Recycling equipment manufactured before November 15, 1993 must be evacuated to a level of 4 inches of mercury What conditions allow for a system to be opened and repaired without recovering the refrigerant to the required vacuum level? a system with a large leak and system pressure of atmospheric A new split system should be checked for leaks by; pressurizing the system with a few ounces of R-22 and an inner gas An overcharged system will operate; less efficiently Refrigerant should be removed from the condenser outlet if the condenser is; is below the receiver EPA regulations require that all Commercial and Industrial Process Refrigeration containing more than 50lbs. of refrigerant MUST be repaired when the annual leak rate exceeds; 35% Proper recovery techniques begin with the use of appropriate recovery equipment that has been certified by; EPA approved laboratory