EPA Type 1 Practice test 2022

Technicians who perform sealed system service on small appliances must have; - ANSWER Type I or Universal certification. A small appliance is defined by EPA as; - ANSWER Appliances manufactured, charged, and hermetically sealed in a factory with 5 Lbs or less of refrigerant Type I Certification is required for; - ANSWER persons handling refrigerant during maintenance, service, or repair of small appliances If regulations change after the technician becomes certified; - ANSWER The technician is responsibility for complying with any future changes in the regulations. Recovery equipment manufactured after November 15, 1993 must be; - ANSWER capable of recovering 90% of the refrigerant in the compressor os operating; 80% of refrigerant if its not or 4 inches of vaccum Which of the following is true of small appliances refrigerant leaks; - ANSWER EPA does not require repair, but leaks should be repaired whenever possible. Recovery equipment manufactured after November 15, 1993 must be capable of recovering; - ANSWER 90% refrigerant or or achieving 4 inches of vacuum. Recovering multiple types of refrigerants in the same cylinder; - ANSWER will make the reclaimed refrigerants non reclaimable and a charge for disposal may be levied. Self-contained or active recovery equipment; - ANSWER Has its own means of recovery. System-dependant or passive recovery equipment; - ANSWER Captures refrigerant into a non-pressurized container with assistance of the appliance compressor. What is defined as a non-condensible? - ANSWER Air When using a system-dependent recovery system on an appliance that has an operating compressor, the technician should; - ANSWER Run the compressor and recover from the high side of the system. When using a system-dependent recovery system on an appliance that has a non-operating compressor, the technician should; - ANSWER Place access fitting on both the low and high side of the system. System-dependant devices may only be used on appliances containing; - ANSWER 15 pounds of refrigerant or less. Small appliances are equipped with a straight piece of tubing (process stub) used to; - ANSWER install a piercing type access valve fitting. If a strong odor is detected while performing the recovery process, - ANSWER A compressor burnout has likely occurred. After the refrigerant has been recovered, which of the following can be used to flush the system? - ANSWER Nitrogen When filling a charging cylinder with a regulated refrigerant; - ANSWER The refrigerant vapor that is vented off the top of the cylinder must be recovered. If after installing a fitting for the purpose of recovering the appliances refrigerant, you find that the system pressure is 0 psig; - ANSWER Recovery is not required. Applying heat with a heat gun to the compressor; - ANSWER can help vaporize any trapped liquid refrigerant during recovery. Refrigerators in the 1950's and earlier may have used what refrigerants (recovery is not required)? - ANSWER Methyl Formate, Methyl Chloride, or Sulfur Dioxide. Small appliances in recreational vehicles may use refrigerants such as Ammonia, Hydrogen, or water, and therefore; - ANSWER The refrigerant should not be recovered. Recovery equipment manufactured before November 15, 1993 must be capable of recovering. - ANSWER 80 percent of the refrigerant or achieving 4 inches of vacuum. When pressurizing a system with nitrogen you should; - ANSWER charge through a pressure regulator;place a relief valve in the downstream line from the pressure regulator. After recovering refrigerant, the Nitrogen used to flush the system may be: - ANSWER legally vented. The sale of CFCs and HCFC's are - ANSWER restricted to certified technicians ARI 740 sets - ANSWER recovery requirements All equipment must be equipped with - ANSWER low loss fittings Low loss fittings should be able to - ANSWER close manually or automatically when hoses are disconnected to minimize refidgerant loss Before beginning a refrigerant recovery procedure, it is necessary - ANSWER to know the type of refrigerant that is in the system. self contained (active) recovery equipment stores itself in a - ANSWER pressurized recovery tank Before opening a self contained recovery machine make sure the - ANSWER inlet valve is open, and tank does not contain excessive air (non condensables) The only way to read refrigerant pressure correctly is at - ANSWER a stable known temperature Air in refrigeration systems will cause - ANSWER higher discharge pressures When purging non-condensables abide by - ANSWER operating instruction supplied by equipment manfactuer All refrigerant recovery equipment should be check for what on a daily basis - ANSWER oil level and leaks A system depended has a - ANSWER special charcoal activated plastic "bag" containers System dependent equipment captures refrigerant with the assistance of - ANSWER an applicant compressor, external heat source, or vacuum pump A standard vacuum pump can only be used in combination with a - ANSWER non-pressurized container In order to release trapped refrigerant from the compressor oil - ANSWER heat and tap the compressor several times and/ or use a vacuum pump Because appliances with non-operating compressors can not always achieve desired evacuation rates utilizing system dependent equipment - ANSWER The EPA requires at least one self contained recovery device available at the shop The exception to the EPA required rule of a self contained device available is technicians - ANSWER working on small appliances only System dependent devices may only be used on appliances - ANSWER containing 15 lbs. of refrigerant or less. When installing an access fitting onto a sealed system, - ANSWER the fitting should be leak tested before proceeding with recovery. It is generally recommended that _____ ____ type valves be used on only copper or aluminum tubing material, these fitting tend to leak over time and should not be left on a permanent service fixture. - ANSWER Solder-less piercing After installing a access fitting you the system pressure to be 0 PSIG - ANSWER do not begin recovery process. Operating a defrost heater on a domestic frost free refrigerator will help to - ANSWER vaporize any trapped liquid refrigerant and will speed the recovery process. When recovering refrigerant from a system that experienced a compressor burn-out, - ANSWER watch for signs of contamination in the oil. Small appliances may use such refrigerants as __,___,___ and therefore should not be recovered with current using current recovery equipment. - ANSWER Ammonia, Hydrogen, Water