MACS 609 Certification Exam Practice Test (Latest 2026/2027 Update) Questions with Verified Answers | 100% Correct| Graded A.

MACS 609 Certification Exam Practice Test
(Latest 2026/2027 Update) Questions with
Verified Answers | 100% Correct| Graded A.

Question:

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

Perform a leak test procedure
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Question:

Which item is not mentioned in the SAE J1991 standard of refrigerant
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purity??

Answer:

Acid




Question:

Which of the following is unlikely to affect refrigerant charge accuracy??
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Answer:

A/C Compressor
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,Question:

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




Answer:

Quick-couple design i,-




Question:

What is the advantage of using refrigerant identification equipment??
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Answer:

Allows the ability to determine what type of refrigerant is in system
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Question:

If an HFC-134a A/C system still has pressure after the first refrigerant
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recovery process is complete (including the five-minute pause), additional
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recovery is necessary until the system vacuum level remains stable for:?
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Answer:

2 minutes
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Question:

, Paid technicians who service or repair buses using HCFC-22 as refrigerant,
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and/or service or repair aircraft or ship/boat cargo refrigeration
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equipment:?

Answer:

Must be Section 608 Type II Certified
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Question:

Specific safety information for managing incidents involving refrigerants
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and other chemicals (inhalation, spills, fires, etc.) is found in the:?
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Answer:

Material safety data sheet (MSDS) for the chemical
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Question:

To what does Global Warming Potential (GWP) refer??
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Answer:
Relative ability to produce global warming effect
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Question:

When performing engine pre-heat for refrigerant removal, the technician
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should do ALL of the following EXCEPT:?
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Answer: