Question 1Small appliance recovery
Before recovering, a technician wants to confirm the refrigerant in a cooler with a worn label. Which check helps?
Type I
A small appliance is factory sealed with 5 pounds or less. With equipment made after 15 November 1993, recover 90 percent if its compressor works and 80 percent if not, or reach 4 inches of vacuum.
Question 2Small appliance recovery
Why should a technician identify the refrigerant before starting recovery?
Question 3Small appliance recovery
A freezer has a slow leak but still shows pressure on the gauge. What should the technician do before cutting into it?
Question 4Small appliance recovery
A freezer that used R-12 has a partial charge left. Can the technician top it off with R-134a?
Question 5Small appliance recovery
A freezer known to use one refrigerant has sat off for hours at 70 F. Its pressure reads far below that refrigerant's chart pressure at 70 F. What is the likely cause?
Question 6Small appliance recovery
An R-12 refrigerator is being converted to R-134a. What must the technician consider about the lubricant?
Question 7Small appliance recovery
A 1990s freezer was built with R-12. Which refrigerant is the most likely substitute in that type of appliance?
Question 8Small appliance recovery
The compressor in a window air conditioner has failed. What advantage does self-contained recovery equipment offer here?
Question 9Small appliance recovery
Why does warming the compressor of a failed small appliance speed passive recovery?
Question 10Small appliance recovery rules
A freezer's nameplate lists a 20-ounce charge. Its compressor will not run, and the recovery equipment was made in 2010. What is the least the technician may recover?
Question 11Small appliance recovery rules
A water cooler's nameplate lists a 10-ounce charge. Its compressor runs, and the recovery equipment was made in 2019. What is the least the technician may recover?
Question 12Small appliance recovery rules
Equipment made after 1993 for small appliance recovery must be certified to recover how much from a test stand?
Question 13Small appliance recovery rules
An installer pipes a small walk-in cooler on site and charges it with 4 pounds of refrigerant. Is it a small appliance?
Question 14Small appliance recovery rules
A refrigerator arrives at a scrap yard after its charge leaked out through a corroded line. What must the yard obtain?
Question 15Small appliance recovery rules
A technician takes the Type I test in the mail-in format. What score is needed to pass?
Question 16Small appliance recovery rules
A technician passed Type I by mail and later passed proctored Type II and Type III tests. Is she a Universal technician?
Question 17Small appliance recovery rules
The rules define 'opening' an appliance. Which activity falls outside that definition?
Question 18Small appliance recovery rules
New small appliances (other than those using exempt refrigerants) may be sold only if they are equipped with what?
Question 19Small appliance recovery rules
Which of these appears in the rule's list of small appliance examples?
Question 20Small appliance recovery rules
A final processor accepts signed statements that refrigerant was recovered. What must each statement include?
Question 21Small appliance recovery rules
How long must a final processor keep the signed statements it collects for small appliances?
Question 22Small appliance recovery rules
A technician holds only Type I certification. Which job may she legally do?
Question 23Small appliance safety
A small appliance compressor has burned out. Why should the technician avoid skin contact with its oil?
Question 24Small appliance safety
Which of these refrigerants contains chlorine and can form phosgene in a flame?
Question 25Small appliance safety
How can a technician recognize a refrigerant recovery cylinder?
Question 26Small appliance safety
A technician wants to store recovered refrigerant in an empty disposable cylinder. What is the rule of safe practice?
Question 27Small appliance safety
Which is a safe way to warm a failed compressor during recovery?
Question 28Small appliance safety
Several freezers leak refrigerant in a small basement storeroom with no ventilation. What is the main breathing hazard?
Question 29Small appliance safety
A technician brazes near a leaking line on an R-12 freezer. Which toxic gas can form when R-12 meets the flame?
Question 30Small appliance safety
What protective gear should a technician wear when connecting hoses to a small appliance?
Question 31Small appliance safety
Before brazing a line on a cooler charged with propane (R-290), what must happen first?
Question 32Small appliance safety
Why must refrigerant be recovered from a small appliance before any brazing on its tubing?