Exam 36: Heating and Air Conditioning Service

The statement that is MOST-Likely true is:

Unlike brake fluid, stored refrigerant oil should be sealed tightly by the cap.

The pressure reading in the system when it is not operating is called ____________________.

What are the rules of thumb when conducting a pressure test?

If a heater has a control valve and it is closed, both hoses should be warm.

Why is considered a mistake to allow an air-conditioning system to remain empty?

Discuss two reasons why a clutch might fail?

How would you handle a clutch engagement problem?

The high-side gauge registers temperature only.

Which of the following is LEAST-Likely to be a component of the clutch and compressor?

All of the following statements about are true EXCEPT:

The low-pressure gauge is a ____ that reads in either low pressure or vacuum.

Sealants, the wrong dye, and flushing agents are all bad for air-conditioning systems.

While having a discussion, Technician A says that a desiccant becomes saturated when it becomes full of water. Technician B says that on a day with 80% humidity, a desiccant can become completely saturated if left fully open to the atmosphere for as little as 10 minutes. Who is correct?

The material used for desiccants since the early eighties is a(n) ____________________ that will not crumble when wet.

The machine that will MOST-Likely remove the refrigerant and recycle it during the vacuum cycle is the:

Which of the following statements is LEAST-Likely true?

Before system pressure and duct temperature tests, what items should be met?

Protect a vacuum pump by changing its oil every ____________________ hours or less.

The ____________________ valve is on the inlet to the compressor on the low side.