Copy of EPA Section 608 Core B

The center port of the service manifold is usually a ______ hose:

• green

• blue

• red

• yellow

Before shipping any used refrigerant cylinders, check that the cylinder meets what standards:

• Department of Transportation (DOT)

• The Significant New Alternatives Policy (SNAP)

• Underwriters Laboratories

• All answers are correct.

Which of the following has the highest Ozone Depletion Potential (ODP)?

• HFOs

• HFCs

• CFCs

• HCFCs

After recovering refrigerant from a sealed system, which gas is used to pressurize (for leak checking) or blow debris out of the system:

• Carbon dioxide

• Oxygen

• Nitrogen

• All answers are correct.

The low-side test-pressure data-plate value should be used by a technician to determine a safe pressure for:

• recovering refrigerant.

• refrigerant charging.

• leak testing.

• retrofitting a system.

Only _____ refrigerant can be transferred or sold to another individual:

• Recycled

• Recovered

• Reclaimed

• Disposed

The chlorine in CFCs and HCFCs: A) is heavier than air and cannot rise to the stratosphere. B) will not dissolve in water. C) will dissolve in water. D) will rain out of the atmosphere.

• is heavier than air and cannot rise to the stratosphere.

• will not dissolve in water.

• will dissolve in water.

• will rain out of the atmosphere.

When checking for small leaks, using a _____ is the most effective method:

• Fluorescent dye indicator

• Electronic

• Bubble solution

• Ultra-Sonic

Reusable refrigerant recovery cylinders shall be hydrostatically tested and date stamped for every ______:

• 1 year

• 2 years

• 4 years

• 5 years

R-410a at 70°F will have a saturation pressure of:

• 121 psig

• 71 psig

• 201 psia

• 201 psig