Vocab
Furnace Review
Ch.10 Workbook
Ch.10 Review
EPA Review
100

What uses fluorescent dye and ultraviolet light to detect leaks?

Fluorescent Dye Leak Detection

100

What senses flame and tells the blower motor to turn on?

Flame Sensor

100

Cylinders that contain a corrosive refrigerant must be inspected every ___ years:

5

100

A device used for creating vacuums to dehydrate an HVACR system is a ____.

Vacuum Pump

100

A refrigerant cylinder designed to hold recovered refrigerant is what color?

Grey body, Yellow top

200

What is a high-side service valve that is mounted at a compressors discharge port providing a shutoff between the compressor and the condenser?

Discharge Service Valve(DSV)

200
Which parts circuit is closed by the negative pressure inside of the heat exchanger?

Pressure Switch

200

A low cost method used to confirm exact leak locations:

Bubble Solution

200

A pressure gauge that is specifically designed to measure lower-than-atmospheric pressure is a:

Compound Gauge

200

Which type of refrigerant contains no chlorine?

HFCs

300

What valve keeps air out of refrigerant lines in AC units?

Schrader Valve

300

What part turns the system off when over heating?

High Limit Switch

300

When a service valve stem is turned so that it is halfway between front and back seats, it is considered___:

In Mid Position

300

A technician must use a____ to access small hermetic systems that do not have service valves or access ports.

Piercing Valve

300

What do HCFC's contain?

Hydrogen, Chlorine, Fluorine, and Carbon

400

What is a thin walled tube of elastic metal bent into a circular shape that straightens as pressure inside is increased?

Bourdon Tube

400

R-?

W-?

G-?

Y-?

C-?

R-Power

W-Heat

G-Indoor Blower

Y-Cooling

C-Common

400

A refrigeration system should be____ before a brazed-on piercing valve is installed:

Recovered and Evacuated

400

An externally threaded valve with a spring-loaded center pin is called a:

Discharge Service Valve(DSV)

400

A single chlorine atom can destroy how many ozone molecules?

100,000

500

What is a service valve that is installed between the condenser and the inlet of the liquid receiver?

Queen Valve

500

What does AFUE stand for?

Annual Fuel Utilization Efficiency

500

Disposable cylinders would be stored at temps below ___ to prevent refrigerant pressure build-up:

125°F

500

The device that engages an extra spring in a pressure gauge to adjust the gauge's calibration to high graduation marks on its scale is a:

Retarder

500

Reusable refrigerant containers under high-pressure must be hydro statically tested how often?

5 years