Download Fundamentals of HVACR by Carter Stanfield, David Skaves, AHRI PDF

By Carter Stanfield, David Skaves, AHRI

Created with a uncomplicated imaginative and prescient of invaluable wisdom, this groundbreaking textual content offers finished insurance of heating, ventilating, air-con, and refrigeration. Lauded as a reader-friendly textual content that gives you primary thoughts, the most up-tp-date traits, and useful purposes with basic language and elegantly awarded innovations, F undamentals of HVACR, 2d version boasts rigorously chosen art and the correct amount of element. This e-book is every little thing readers want to know to put in, provider, and retain HVACR structures.

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1. Always use a welding regulator on acetylene and oxygen cylinders. 2. Never use oil or grease on a regulator, as this could cause a violent explosion with compressed oxygen. 3. Always secure the cylinder to something solid to prevent it from being accidentally knocked over. 4. Wear the proper colored safety glasses. 5. Open the valve on the acetylene cylinder only one and one-quarter turns. 6. Light the torch with a striker. SAFETY TIP Always remove regulators from oxygen and acetylene cylinders before you put them back in your service vehicle.

Only use power tools that are properly grounded. 2. Stand on dry, nonconductive surfaces when using electrical tools. 3. Use only properly sized electrical cords in good condition with a GFI or GFCI. 4. Turn on the power only after checking to see that there is no obstruction to proper operation. 5. Disconnect the power from an electrical tool (or motor) before performing any maintenance. 6. Disconnect the power supply when equipment is not in use. CAUTION Never use portable electrical equipment unless it is connected to a ground fault circuit interrupter (GFCI) or ground fault interrupter (GFI).

3. Place ladders on a firm footing, no farther out from the wall than one quarter of the height required, as shown in Figure 3-7. 4. Ladders must be tied, blocked, or otherwise secured at the top where the ladder meets the building to prevent them from slipping sideways. UNIT 3 SAFETY 21 3 FEET MINIMUM Figure 3-8 Never use a metal ladder near electrical wires! HEIGHT CAUTION Ladders must be inspected from time to time to ensure their safety. Some companies will require that a company safety official inspect the ladders you carry on your service van.

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