Core
The bubble point is...
the value of when a mixture has hit subcooling (liquid).
Are there drop-in refrigerants, substitutes such as for R-22.
No.
How should multiple relief valves be installed?
Parallel
A hydrostatic tube test kit performs this task.
What is testing for a tube leak?
The meaning of ODP.
What is Ozone Depletion Potential?
The dew point is...
the value of when a mixture has hit superheat (vapor).
A recovery tank should not exceed this capacity.
What is 80%?
what does a moisture-indicating sight glass indicate?
Moisture
These are considered to be 'major repairs.'
What is replacing the compressor, condenser, or evaporator?
The meaning of GWP.
What is Global Warming Potential?
Azeotropic mixtures are...
What are two mixtures containing 2+ refrigerants that act as one compound?
When handling a charging cylinder filled with refrigerant, what must you do?
What is recovering the vented off refrigerant?
What can an owner do to extend the repair deadline of a leaking appliance?
shut down appliances and recover refrigerant from isolated systems or whole systems.
The liquid refrigerant is charged into the stem through what?
What is the evaporation charging valve?
This refrigerant category has the highest GWP
What is CFC?
Zeotropic mixtures are...
mixtures of components that have different boiling points.
These should be installed when recovering refrigerant from a household refrigerator.
What are low and high-side access valves?
How long does the owner have to retrofit or retire a leaking appliance if the replacement/retrofit is an exempt refrigerant?
18 Months
This should be circulated through a chiller while recovering refrigerant to prevent it from freezing.
What is water?
The amount a single chlorine atom can destroy.
What is 100,000 ozone compounds?
What are different pressures for the same saturation temperature?
When the compressor is inactive, how much refrigerant must the equipment recover?
80% of refrigerant or a 4-inch vacuum.
What is 10% for comfort cooling, 20% for commercial refrigeration, and 30% for IPR?
A 350-ton R-123 chiller at 0 psig has how many pounds of refrigerant in the vapor state?
What is 100 pounds of refrigerant?
This compound forms if chlorine comes in contact with ozone.
What is Chlorine Monoxide?