Tools and Equipment

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Questions and Answers

Which instrument is BEST suited for verifying the insulation integrity of motor windings?

  • Volt-Ohm Meter (VOM)
  • Ultrasonic Leak Detector
  • Megohmmeter (correct)
  • Clamp-On Amp Meter

A technician needs to measure the salinity of water. Which instrument should they use?

  • Refractometer (correct)
  • Hygrometer
  • Thermometer
  • Psychrometer

When removing panel screws with an impact driver, which speed setting is generally recommended to prevent damage?

  • Low speed (Setting 1)
  • High speed (Setting 3)
  • Screw mode (correct)
  • Medium speed (Setting 2)

A technician is tasked with drilling into a concrete wall. Which tool is MOST appropriate for this task?

<p>Hammer Drill (D)</p> Signup and view all the answers

A system is operational and has refrigerant, what tool should be used to replace a faulty Schrader core?

<p>Valve Core Removal Tool (VCRT) (D)</p> Signup and view all the answers

Which of the following is the primary function of a psychrometer?

<p>Determining relative humidity (C)</p> Signup and view all the answers

What safety precaution is MOST crucial when using a grinder?

<p>Wearing appropriate Personal Protective Equipment (PPE). (D)</p> Signup and view all the answers

A technician needs to measure the superheat of a system. Which of the following tools would they use?

<p>Thermometer and Psychrometer (C)</p> Signup and view all the answers

When selecting a copper tube cutter, what is the most important factor to consider?

<p>Having the proper size cutter for the specific tubing application. (C)</p> Signup and view all the answers

A technician needs to tighten a black iron pipe. Which tool is MOST appropriate for this task?

<p>Pipe wrench. (D)</p> Signup and view all the answers

What is the PRIMARY function of a swaging tool in HVAC work?

<p>To expand the end of one tube so it can fit over another for brazing. (D)</p> Signup and view all the answers

Why is it important to use a reaming/deburring tool after cutting copper tubing?

<p>To remove any sharp edges or burrs that could restrict flow or damage seals. (D)</p> Signup and view all the answers

Which of the following is NOT a typical application for torque wrenches in HVAC/R systems?

<p>Connecting black iron piping. (C)</p> Signup and view all the answers

When recovering refrigerant from a system, what additional function can some recovery machines perform?

<p>Charging systems with refrigerant. (B)</p> Signup and view all the answers

Why are vacuum pumps crucial during the installation or servicing of HVAC/R systems?

<p>To remove moisture and non-condensable gases from the system. (A)</p> Signup and view all the answers

Which snips would be MOST appropriate for making a curved cut to the RIGHT in a piece of sheet metal?

<p>Right cut (green). (A)</p> Signup and view all the answers

Flashcards

Ultrasonic Leak Detector

Uses a pump to draw in gases to detect leaks.

Psychrometer

Measures wet bulb and dry bulb temperatures to determine relative humidity.

Volt-Ohm Meter (VOM)

Measures volts, ohms, and milliamps.

Clamp-On Amp Meter

Measures current by clamping around a wire.

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Megohmmeter (Megger)

Measures high resistance, useful for checking motor winding insulation.

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Refractometer

Measures the concentration of substances like sugar, antifreeze, or salt.

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Impact Driver

Used for driving screws, or bolts into materials. Best to use 'screw mode' to remove panels.

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Valve Core Removal Tool (VCRT)

Removes/replaces Schrader cores on valves, even on live systems.

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Screwdrivers

Tools used for tightening or loosening screws. Common types include Phillips, flat, and Torx.

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Nut Drivers

Sockets attached to a handle, used to tighten or loosen nuts and bolts. Common sizes range from 1/4" to 9/16".

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Adjustable (Crescent) Wrench

A wrench with an adjustable jaw, allowing it to fit various sizes of nuts and bolts.

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Torque Wrench

A wrench that applies a specific amount of torque to a fastener, measured in in./lbs. or ft./lbs.

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Valve Wrenches

Specialized wrenches for opening or closing refrigeration valves.

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Pipe Wrenches

Wrenches with serrated jaws designed for gripping and turning pipes, typically made of steel or aluminum.

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Aviation (Tin) Snips

Handheld tools for cutting sheet metal. Different colors indicate different cut directions (straight, left, right).

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Copper Tube Cutters

Tool used to cut copper tubing cleanly and efficiently.

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