EPA TYPE 2 QUESTIONS AND ANSWERS

EPA TYPE 2 QUESTIONS AND ANSWERS Which of the following statements about recycling and recovery equipment used for stationary refrigeration is FALSE? - Answer ️️ -Purchases of such equipment must be reported to the EPA. What should be done after reaching the required recovery vacuum on an appliance? - Answer ️️ -Wait for at least a few minutes to see if the system pressure rises. What area of a refrigeration system does oil foaming usually occur? - Answer ️️ -Compressor When is it against EPA regulations to use system-dependant recovery equipment? - Answer ️️ - system-dependant recovery equipment? When the appliance contains over 15 pounds of refrigerant. What is the best use for testing with soap bubbles? - Answer ️️ -To pinpoint refrigeration leaks. You are changing out the compressor of a system containing 40 pounds of R-404A. In addition to isolating the compressor, which of the following procedures should you follow? - Answer ️️ -Evacuate the isolated section of the system to 0 psig and if the system pressure does not rise after a few minutes, remove the compressor. How long must an HVAC service company keep records for each disposed appliance with a charge between 5 and 50 pounds? - Answer ️️ -З years When recovery is first started, at what phase is the refrigerant removed to save recovery time? - Answer ️️ -Liquid phase When an appliance containing 50 pounds or more of a regulated refrigerant leaks refrigerant at an annual rate of 125% or more, what must be included on the leak inspection records submitted to the EPA? - Answer ️️ -Initial verification, verification tests and records of recovered refrigerant from equipment. What must an owner of a commercial refrigeration appliance with a charge of 2000 pounds of R- 22 do once a leak rate threshold been exceeded? - Answer ️️ -Take further action by repairing, retiring, mothballing, or retrofitting the appliance. When can appliances containing refrigerants be recovered to atmospheric pressure? - Answer ️️ -Leaks in the appliance make recovery to the prescribed level unattainable. Why could a recycling or recovery machine that uses a hermetic compressor overheat when drawing deep vacuums? - Answer ️️ -The motor relies on the flow of refrigerant through the compressor for cooling. Starting in 2019, what leak rate triggers the EPA requirement that commercial refrigeration systems containing 50 pounds or more of R-22 be repaired? - Answer ️️ -20% For what refrigerant is an equipment room refrigerant detector NOT required under ASHRAE Standard 15 provided the mechanical ventilation system in the machinery room is run continuously? - Answer ️️ -R-717 Industrial process refrigeration units with a 50 pound charge or more with an annualized leak rate ___of or more must have leaks repaired. - Answer ️️ -30% Unless plans are made to replace a system exceeding the maximum leak, repairs must be made in; - Answer ️️ -30 days. Refrigerants CFC R-12, HCFC R-22, and HFC 134a are all classified as; - Answer ️️ -Туре А- 1 All Refrigeration & HVAC systems are protected by a; - Answer ️️ -Pressure relief valve A refrigerant sensor which will sound an alarm and automatically start a ventilation system in occupied equipment rooms fall under; - Answer ️️ -ASHRAE Standard 15 Non-condensables will cause; - Answer ️️ -High discharge pressure A crankcase heater is often used to prevent refrigerant from migrating to the oil during periods of: - Answer ️️ -Low ambient temperature EPA regulations state that maintenance, service or repair involving the removal of the following component is a "major repair" - Answer ️️ -Compress