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Refrigerant Identification & Testing Flashcards

7 cards from real CFC practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Refrigerant Identification & Testing flashcards as text

  1. Which tool is specifically designed to identify the type of refrigerant present in a system before servicing?

    Answer: Refrigerant identifier/analyzer

    A refrigerant identifier/analyzer uses infrared spectroscopy to determine the exact composition of refrigerant before service work begins.

  2. What is the standard cylinder color for R-22 refrigerant per AHRI color-coding standards?

    Answer: Light green

    R-22 refrigerant cylinders are painted light green per AHRI cylinder color-coding standards to help technicians quickly identify refrigerant type.

  3. A technician receives an unlabeled cylinder of refrigerant. What is the FIRST step they should take?

    Answer: Identify the refrigerant using an analyzer

    Identifying unknown refrigerant with an analyzer before any service procedure prevents contamination of recovery cylinders and ensures safe handling.

  4. What physical property difference most readily distinguishes R-410A from R-22 using manifold gauges?

    Answer: R-410A operates at significantly higher pressures than R-22

    R-410A operates at pressures approximately 50-70% higher than R-22, which is a key distinguishing characteristic visible on manifold gauges in the field.

  5. What does a positive result on a chloride test strip applied to refrigerant oil indicate?

    Answer: CFC or HCFC refrigerant contamination is present

    A positive chloride test indicates the presence of chlorine atoms, which are found in CFCs and HCFCs but not in HFCs, helping identify the refrigerant family.

  6. Which AHRI standard establishes purity specifications that reclaimed refrigerants must meet before resale or reuse?

    Answer: AHRI 700

    AHRI Standard 700 sets the purity requirements — including moisture, acidity, non-condensables, and particulate limits — that reclaimed refrigerants must meet to be equivalent to new refrigerant.

  7. What is the primary reason for using a refrigerant identifier before adding refrigerant to an existing system?

    Answer: To verify the system contains the expected refrigerant and has not been contaminated or changed

    Verifying the existing refrigerant's identity prevents adding incompatible refrigerants that could damage the system or create hazardous, unrecoverable mixtures.