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MACS 609 Certification Practice Questions with complete solutions |Latest 2024/2025 $8.49   Add to cart

Exam (elaborations)

MACS 609 Certification Practice Questions with complete solutions |Latest 2024/2025

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  • Course
  • MACS 609 Certification
  • Institution
  • MACS 609 Certification

What should you do when replacing hoses? Make sure you have the correct type/size of tubing What does GWP stand for? Global Warming Potential CO2 is equal to what A/C system? R-744 HFO-1234yf systems are acceptable in what kinds of vehicles? Passenger cars, light-duty trucks, mediu...

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  • September 16, 2024
  • 7
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • MACS 609 Certification
  • MACS 609 Certification
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MACS 609 Certification Practice Questions
_;- _;- _;- _;- _;-




with complete solutions.
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What are the 2 types of HFC-152a systems?
_;- _;- _;- _;- _;- _;- _;- _;-_;- _;- Direct expansion and _;- _;- _;-


secondary loop type _;- _;-




What should you do when replacing hoses?
_;- _;- _;- _;- _;- _;- _;-_;- _;- Make sure you have _;- _;- _;- _;-


the correct type/size of tubing
_;- _;- _;- _;-




What does GWP stand for?
_;- _;- _;- _;- _;-_;- _;- Global Warming Potential _;- _;-




CO2 is equal to what A/C system?
_;- _;- _;- _;- _;- _;- _;-_;- _;- R-744



HFO-1234yf systems are acceptable in what kinds of vehicles?
_;- _;- _;- _;- _;- _;- _;- _;- _;-_;- _;-


Passenger cars, light-duty trucks, medium-duty passenger vehicles, heavy-
_;- _;- _;- _;- _;- _;- _;-



duty pickup trucks, and complete heavy-duty vans
_;- _;- _;- _;- _;- _;-




HFO-1234yf systems are not acceptable in what kinds of vehicles?
_;- _;- _;- _;- _;- _;- _;- _;- _;- _;-_;- _;-


Heavy-duty trucks, refrigerated transport, and off-road vehicles such as
_;- _;- _;- _;- _;- _;- _;- _;- _;-


farm equipment
_;-




HFO-1234yf is classified by ASHRAE as what? _;- _;- _;- _;- _;- _;- _;-_;- _;- A2L- mildly flammable
_;- _;-




R-744 systems operate at ___ to ___ times higher than HFC-134a and
_;- _;- _;- _;- _;- _;- _;- _;- _;- _;- _;- _;-


HFC-152a systems. 5 to 10 _;- _;-_;- _;- _;- _;-

, HFC-152a is ___ _;- _;- _;-_;- _;- flammable



Direct Expansion _;- Refrigerant directly expands within the evaporator _;-_;- _;- _;- _;- _;- _;- _;- _;-



that is located inside the passenger compartment
_;- _;- _;- _;- _;- _;-




Secondary Loop (Open Loop) A circulating non-flammable fluid
_;- _;- _;- _;-_;- _;- _;- _;- _;- _;-



replaces the evaporator which provides isolation between the flammable
_;- _;- _;- _;- _;- _;- _;- _;- _;-


refrigerant and the passenger compartment _;- _;- _;- _;-




Section 609 of the Clean Air Act gives the EPA authority to do what?
_;- _;- _;- _;- _;- _;- _;- _;- _;- _;- _;- _;- _;- _;-_;-


Establish standards and requirements regarding the servicing of
_;- _;- _;- _;- _;- _;- _;- _;- _;-


mobile A/C systems _;- _;-




What/who establishes standards specifically for the service of motor
_;- _;- _;- _;- _;- _;- _;- _;- _;-


vehicle air conditioning systems (MVAC's)?
_;- _;-Section 609 of the Clean _;- _;- _;-_;- _;- _;- _;- _;- _;- _;-


Air Act
_;-




How many categories of the Section 608 Certification are there?
_;- _;- _;- _;- _;- _;- _;- _;- _;- _;-_;- _;- 4 _;-


types



What are the 4 categories of Section 608 of the Clean Air Act?
_;- _;- _;- _;- _;- _;- _;- _;- _;- _;- _;- _;- _;-_;- _;- 1.) _;-



Small Appliances, 2.) High Pressure Appliances, 3.) Low Pressure
_;- _;- _;- _;- _;- _;- _;- _;- _;-


Appliances, and 4.) All Appliances except MVACs _;- _;- _;- _;- _;- _;-




What type of Section 608 is Section 609 similar too?
_;- _;- _;- _;- _;- _;- _;- _;- _;- _;-_;- _;- Type 2 _;-

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