WorksheetsCopy of EPA Section 608 Core B
Total questions: 10
Worksheet time: 5mins
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
