EPA 608 & Refrigerants
What is the main reason the EPA regulates refrigerants?
To protect the ozone layer and prevent environmental harm.
What should you always do before working on electrical HVAC equipment?
Turn off the power at the breaker.
Which tool is used to tighten or loosen nuts and bolts?
Crescent wrench
What is the most common reason a heat pump isn’t heating?
Dirty filters
What does HVAC stand for?
Heating, Ventilation, and Air Conditioning
What must you do with the refrigerant before opening a system?
Recover it using proper equipment.
What PPE should you wear when handling refrigerants?
Safety glasses and gloves (and sometimes a respirator).
What tool should you never use to check for gas leaks?
A lighted match
If an AC unit won’t turn on, what should you check first?
Power supply/circuit breaker
What is the purpose of a thermostat?
To control the temperature in a space.
Name one refrigerant that is being phased out due to ozone depletion.
R-22 (or HCFC-22)
What should you do if you get refrigerant on your skin?
Rinse thoroughly with water and seek medical attention if needed.
Name a tool used to measure electrical current.
Multimeter
What is a common cause of poor airflow from vents?
Blocked or dirty air filters
What is superheat?
The temperature of vapor refrigerant above its boiling point.
What certification do you need to legally purchase refrigerants?
EPA Section 608 Certification
What is the safest way to check for a refrigerant leak?
Use an electronic leak detector or soap solution.
What tool is used to cut copper tubing?
Tubing cutter
If a system is low on refrigerant, what might be the problem?
A refrigerant leak
What is the function of the evaporator coil?
To absorb heat from indoor air.
True or False: It is legal to vent R-410A into the atmosphere.
False
What should you do if someone is smoking near flammable materials?
Ask them to leave and put out the cigarette.
What is the purpose of a manifold gauge set?
To measure refrigerant pressure in HVAC systems.
What should you ask if a water pump isn’t working?
Has anyone adjusted the pump’s settings?
What is the first step in installing a new appliance?
Remove it from the box and check the installation area.