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MACS 609 CERTIFICATION Exam Questions With Correct Answers $10.49   Add to cart

Exam (elaborations)

MACS 609 CERTIFICATION Exam Questions With Correct Answers

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  • Course
  • MACS 609
  • Institution
  • MACS 609

MACS 609 CERTIFICATION Exam Questions With Correct Answers The use of ultraviolet (UV) or fluorescent dyes in an HFO-1234yf system is: - answerApproved by some vehicle manufactures but not by others One effect of some refrigerant gases in the atmosphere is that they: - answerContribute to trap...

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  • October 18, 2024
  • 8
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • MACS 609
  • MACS 609
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sirjoel
©SIRJOEL EXAM SOLUTIONS
10/11/2024 1:41 PM



MACS 609 CERTIFICATION Exam
Questions With Correct Answers


The use of ultraviolet (UV) or fluorescent dyes in an HFO-1234yf system is: -

answer✔Approved by some vehicle manufactures but not by others


One effect of some refrigerant gases in the atmosphere is that they: - answer✔Contribute to

trapping heat


Which item is not mentioned in the SAE J2099 Standard of refrigerant purity? - answer✔Sludge


When it has been determined that an A/C system has a low refrigerant charge, what should be

done? - answer✔Perform a leak test procedure


Which item is not mentioned in the SAE J1991 standard of refrigerant purity? - answer✔Acid


Which of the following is unlikely to affect refrigerant charge accuracy? - answer✔A/C

Compressor

CFC-12 recovery equipment has SAE 3/8-inch service fittings. HFC-134a recovery equipment

has: - answer✔Quick-couple design

, ©SIRJOEL EXAM SOLUTIONS
10/11/2024 1:41 PM


What is the advantage of using refrigerant identification equipment? - answer✔Allows the ability

to determine what type of refrigerant is in system

If an HFC-134a A/C system still has pressure after the first refrigerant recovery process is

complete (including the five-minute pause), additional recovery is necessary until the system

vacuum level remains stable for: - answer✔2 minutes


Paid technicians who service or repair buses using HCFC-22 as refrigerant, and/or service or

repair aircraft or ship/boat cargo refrigeration equipment: - answer✔Must be Section 608 Type II

Certified

Specific safety information for managing incidents involving refrigerants and other chemicals

(inhalation, spills, fires, etc.) is found in the: - answer✔Material safety data sheet (MSDS) for the

chemical


To what does Global Warming Potential (GWP) refer? - answer✔Relative ability to produce

global warming effect

When performing engine pre-heat for refrigerant removal, the technician should do ALL of the

following EXCEPT: - answer✔Make sure the compressor is operating


PAG lubricant: - answer✔Is hygroscopic (absorbs moisture)

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