Macs 609 certification ex - Study guides, Class notes & Summaries

MACS 609 CERTIFICATION EXAM QUESTIONS & ANSWERS CORRECT 100% The use of ultraviolet (UV) or fluorescent dyes in an HFO-1234yf system is: - answers Approved by some vehicle manufactures but not by others One effect of some refrigerant gases in the atmosphere is that they: - answers Contribute to trapping heat Which item is not mentioned in the SAE J2099 Standard of refrigerant purity? - answers Sludge When it has been determined that an A/C system has a low refrigerant charge, what s...

If lubricant is removed by recovery equipment during system refrigerant removal, what must be done with the lubricant? - Answer Re-install lubricant removed by the recovery equipment Before reuse, what must be done with HFC-134a that has been recovered from a mobile A/C system using recovery-only equipment? - Answer Question 2 options: Recycle the HFC-134a before reuse using certified equipment When can HFC-134a become combustible in a mobile air conditioning system? - Answer If shop air ...

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What is not identified in the manual as a concern with field-coupled hoses? Length of hose Specific safety information for managing incidents involving refrigerants and other chemicals (inhalation, spills, fires, etc) is found in the: Material safety data sheet (MSDS) for the chemical Which of the following is NOT a factor in how much refrigerant can be recovered from an A/C system? The age of the vehicle Which type of mobile A/C system will usually require additional time / preca...

The use of ultraviolet (UV) or fluorescent dyes in an HFO-1234yf system is: - ACCURATE ANSWERS Approved by some vehicle manufactures but not by others One effect of some refrigerant gases in the atmosphere is that they: - ACCURATE ANSWERS Contribute to trapping heat Which item is not mentioned in the SAE J2099 Standard of refrigerant purity? - ACCURATE ANSWERS Sludge When it has been determined that an A/C system has a low refrigerant charge, what should be done? - ACCURATE ANSWERS Perf...

MACS 609 CERTIFICATION EXAM

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