Core
This refrigerant type contains chlorine and damages the ozone layer.
What is a CFC?
Small appliances contain less than this amount of refrigerant.
What is 5 pounds?
This refrigerant is commonly used in residential split systems.
What is R-410A?
Low-pressure systems are commonly used in this type of equipment.
What are chillers?
This law governs refrigerant handling in the U.S.
What is the Clean Air Act?
This must be done before opening any system containing refrigerant.
What is refrigerant recovery?
Recovery equipment for small appliances must be capable of reaching this condition.
What is a vacuum?
High pressure systems operate above this pressure range.
What is above 155 psig?
These systems typically operate in a vacuum.
What are low-pressure systems?
This gas can form when refrigerant contacts an open flame.
What is phosgene gas?
This device removes refrigerant and stores it in a cylinder.
What is a recovery machine?
This type of compressor is commonly found in small appliances and is not field serviceable.
What is a hermetic compressor?
When recovering refrigerant from a high-pressure system with a non-operating compressor, EPA guidelines require the technician to recover refrigerant to this level before opening the system.
What is 0 psig?
Air and moisture entering the system are called this.
What are non-condensables?
Refrigerant exposure to skin can cause this injury.
What is frostbite?
DAILY DOUBLE
This happens when refrigerant is released into the atmosphere, which is prohibited by EPA regulations.
What is venting?
When recovering refrigerant from small appliances, this can be used instead of system pressure.
What is system-dependent (passive) recovery?
DAILY DOUBLE
When a system has a major leak, recovery requirements change to this level.
What is 0 psig?
These must be removed to prevent system inefficiency.
What are non-condensables?
This must be present on recovery cylinders to identify contents.
What is a label?
This term refers to the temperature at which a refrigerant boils at a given pressure.
What is saturation temperature?
DAILY DOUBLE
Before disposing of a small appliance, this must be done to the refrigerant.
What is recover it?
This component often fails if liquid refrigerant enters it.
What is the compressor?
DAILY DOUBLE
When recovering refrigerant from a low-pressure system, this must be done first to speed up the process.
What is raising system pressure (or warming the system water)?
DAILY DOUBLE
This international agreement aimed to phase out ozone-depleting substances.
What is the Montreal Protocol?