WorksheetsEPA 608 Prep: Type 1 Practice
Total questions: 5
Worksheet time: 3mins
System-dependent or passive recovery equipment:
Captures refrigerant into a non-pressurized container.
Captures refrigerant into one-trip refrigerant cylinders.
Always requires the assistance of a vaccum pump.
Is always equipped with an external compressor.
When a system is in deep vaccum:
Never add refrigerant to the system
Never use a micron gauge
Never energize the compressor
Never energize system fans and blowers
At high temperatures, (i.e., open flames, glowing metal surfaces, etc.) R-12 and R-22 can decompose to form:
hydrozine gas.
helium gas.
phosgene gas
all of the above will be formed
What is the primary purpose of using a vacuum pump in refrigeration systems?
To cool down the refrigerant.
To add refrigerant to the system.
To remove air and moisture from the system.
To increase the system pressure.
Which of the following safety precautions should be taken when handling refrigerants?
Use open flames to check for leaks.
Store refrigerants in direct sunlight.
Release refrigerants into the atmosphere.
Always wear protective gloves and goggles.
