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Automotive Technology: A Systems A...

6th Edition
Jack Erjavec + 1 other
ISBN: 9781133612315

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BuyFindarrow_forward

Automotive Technology: A Systems A...

6th Edition
Jack Erjavec + 1 other
ISBN: 9781133612315
Textbook Problem

Which of the following statements about manifold gauge sets is not true?

  1. An adapter is required for using R-12 gauges on an R-134a system.

  • A manifold gauge set is used when discharging, charging, and evacuating and for diagnosing trouble in an A/C system.
  • The gauge manifold is designed to control refrigerant flow. When the manifold test set is connected into the system, pressure is registered on both gauges at all times.
  • R-134a service hoses have a black stripe along their length, the low-pressure hose is blue, and the high-pressure hose is red.
  • To determine

    i.

    To determine whether an adapter is required for using R-12 gauges on an R-134a system.

    Explanation

    R-134a hose is not inter-changeable with R-12. R-12 (Dichlorodifluoromethane) is a colorless gas whereas R-134a (Tetra fluoro ethane) has a color...

    To determine

    ii.

    To determine whether a manifold gauge set is used when discharging, charging, and evacuating and for diagnosing trouble in an A/C system.

    To determine

    iii.

    To determine whether the gauge manifold is designed to control refrigerant flow. When the manifold test set is connected into the system, pressure is registered on both gauges at all times.

    To determine

    iv.

    To determine whether R-134a service hoses have a black stripe along their length, the low-pressure hose is blue, and the high-pressure hose is red.

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