EPA 608 Type I from practice test-solved

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 responsible for complying with any future changes in the regulations. Recovery equipment manufactured after November 15, 1993 must be; - Answer- Certified by an EPA approved testing laboratory. 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% of the refrigerant or achieving 5 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 fittings on both the low and high side of the system. System-dependant devices may only be used on appliances containing; - Answer- 15 lbs 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% of the refrigerant or achieving 4 inches of vacuum. When pressurizing a system with nitrogen you should; - Answer- Charge through a pressure regulator and place a relief valve in the downstream line from the pressure