Tools and Safety
Heating
Cooling
Electrical
Materials
100

Is PPE required in class?

Yes

100

What is a thermostat?

A device that controls temperature

100

What does the compressor do?

Pumps refrigerant through the system

100

What does a ground wire do?

Provides a safe path for electricity

100

What is PVC primer used for?

Cleans and softens PVC pipe before gluing

200

Is food allowed in the shop?

Yes

200

What does the gas valve do?

Controls gas flow to the burners

200

What does the evaporator do?

Absorbs heat from indoor air

200

What is a transformer?

Changes voltage levels

200

What is black iron pipe used for?

Gas piping systems

300

What does a multimeter do?

Measures voltage, amps, continuity

300

What does a flame sensor do?

Detects the burner flame

300

What does the condenser do?

Releases heat from refrigerant

300

What is a capacitor?

Stores and releases electrical energy

300

What type of pipe is used for brazing?

Copper pipe

400

What tool is used to recover refrigerant?

Recovery machine

400

What is a door switch on a furnace?

A safety switch that shuts power off when the panel is removed

400

What does TXV stand for?

Thermostatic Expansion Valve

400

What is a contactor used for?

Turns high-voltage equipment on and off

400

What does soldering flux do?

Helps clean and allow solder to flow in the pipe

500

What tool is used for brazing?

Oxy-acetylene torch

500

What is a heat exchanger?

Transfers heat from combustion to the air

500

What does the metering device do?

Controls refrigerant flow into the evaporator

500

What prevents motor damage by opening the circuit

What is an overload?

500

What is a site glass used for?

Checks refrigerant flow