Core
An ozone molecule is made of?
What is Three oxygen atoms?
What does the service aperture on a small appliance typically look like?
What is a straight piece of tubing that is entered with a piercing access valve?
How can you tell through a sight glass if there is excess moisture in the system?
What are color changes of the refrigerant?
What parts of the system should be drained of water before recovering refrigerant?
What is the Evaporator and compressor?
As of what date did it become unlawful to release class 1 and 2 refrigerants to the atmosphere?
What is July 1, 1992?
What is the purpose of the CAA?
What is limiting how much of a pollutant can be in the air in the US?
How can you tell what type of refrigerant is in a system?
What is using the pressure / temperature chart?
Traces of oil around a sight inlet fitting of a refrigeration system might be an indication of?
What is a Leak?
What are the typical pressure settings for rupture discs on low pressure systems and recovery equipment?
What is 15 psi?
When was the CFC phase date?
What is December 31, 1995?
R-134a is a drop-in refrigerant for?
What is it's not a drop-in refrigerant?
Which two ways can you release trapped refrigerants in the oil during recovery?
What is heat and tap the compressor with a mallet?
Type 2 classification, as identified by the EPA applies to what equipment?
What is split air condition equipment with 5 pounds of refrigerant or more?
Where do leaks commonly occur in low pressure systems?
What are gaskets or fittings?
CFC's will not be manufactured after what date?
What is 1995?
What do the letters in HCFC stand for?
What is Hydrochlorofluorocarbons?
Before disposing of a small appliance containing R-12, it is necessary to?
What is recover the refrigerant?
Before charging a new system with Refrigerant, what should be done?
What is pressurize with nitrogen and leak checked?
How does a centrifugal compressor purge unit work?
What is it takes the suction from the top of the condenser, removes air from the system, and returns the refrigerant to the evaporator?
How many inches of mercury vacuum is required for HCFC-22, for appliances containing more than 200lbs refrigerant, using equipment manufactured after 11/15/1993?
What is 10 in. Hg?
What is the condition and state of refrigerant leaving a receiver?
What is subcooled liquid?
What type of system can a vacuum pump be used on for recovery?
What is a system-dependent (Passive) recovery?
What type of refrigerant was the most common before outlawing CFC's and HCFC's?
What is R-22?
Where is the rupture disc on a low-pressure centrifugal system and where should the disc be vented to?
What is on the evaporator coil, and vented outside?
When was the Montreal Protocol adopted in Montreal?
What is September 16, 1987?