Standard |
IDS 221 - Industrial Fluidpower
Provides instruction in fundamental concepts and theories for safely operating hydraulic components and pneumatic systems. Topics include: hydraulic theory, suction side of pumps, actuators, valves, pumps/ motors, accumulators, symbols and circuitry, fluids, filters, pneumatic theory, compressors, pneumatic valves, air motors and cylinders, and safety.
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Competency Areas |
Hours
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Hydraulic Theory |
Class |
6 |
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Suction Side of Pumps |
D. Lab |
0 |
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Actuators |
P. Lab/O.B.I. |
4 |
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Valves |
Credit |
7 |
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Pumps/Motors |
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Accumulators |
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Symbols and Circuitry |
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Fluids, filters, and reservoirs |
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Pneumatic Theory |
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Compressors |
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Pneumatic Valves |
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Air Motors and cylinders |
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Safety |
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Prerequisite: |
Program admission level math achievement |
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Corequisite: |
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Course Guide |
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Competency |
After completing this
section, the student will: |
Hours |
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Class |
D.Lab |
P.Lab/ O.B.I. |
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HYDRAULIC THEORY |
5 |
0 |
0 |
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Definition of terms |
Define the terms: force, weight, mass, work, and pressure. |
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Explain the term hydraulics. |
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Principles |
Describe conservation of energy as it applies to a hydraulic system. |
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State the laws of physics that relate to hydraulic applications. |
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Operational conditions |
Explain how force, weight, mass, and pressure are used in the operation of hydraulic devices. |
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Computing units of measure |
Use formulas to compute solutions for single variable problems relating to hydraulic systems where force, weight, mass, pressure, and work are the unknowns. |
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Power transmission |
Identify the advantages of hydraulic power when compared to other methods of power transmission. |
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SUCTION SIDE OF PUMPS |
5 |
0 |
2 |
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Cavitation |
Discuss cavitation in a hydraulic system. |
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Discuss pseudo-cavitation in a hydraulic system. |
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Atmospheric pressure |
Discuss the effects of atmospheric pressure on the suction side of the pump. |
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ACTUATORS |
5 |
0 |
6 |
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Inspection |
Check for symptoms of binding pistons (rods). |
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Alignment |
Align pistons (rods) of hydraulic cylinders. |
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Servo-proportional valves (SPV) |
Discuss purpose of servo-proportional valves. |
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Explain the use of SPV in systems. |
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Explain troubleshooting procedures. |
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VALVES
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11 |
0 |
8 |
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Inspection |
Inspect pressure control (relief) valves. |
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Pressure |
Measure pressure within hydraulic systems. |
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Flow rate |
Measure flow within hydraulic systems. |
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Null procedure |
Null hydraulic servo valves. |
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Replacement and adjustment |
Replace valves in hydraulic systems. Adjust hydraulic pressure at valves. |
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PUMPS/MOTORS
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5 |
0 |
4 |
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Inspection |
Inspect hydraulic pumps. |
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Disassemble and assemble pumps and motors |
Determine type of pumps and motors And check for wear, and/or damage |
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ACCUMULATORS |
2 |
0 |
1 |
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Testing |
Test accumulator charge. |
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Recharge accumulators. |
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Replacement |
Replace defective accumulators. |
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SYMBOLS AND CIRCUITRY |
5 |
0 |
2 |
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Component identification |
Identify symbols used to represent components in hydraulic systems. |
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Identify the purpose of a hydraulic system using circuit diagrams. |
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Schematics |
Draw a hydraulic schematic using symbols to show a complete hydraulic system |
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Be able to read and interpret hydraulic schematics |
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Fluids, Filters, and Reservoirs |
4 |
0 |
2 |
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Composition of fluids |
Explain how hydraulic oil is manufactured. |
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Types |
Identify types of hydraulic fluids and their characteristics. |
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Explain viscosity ratings. |
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Selection of oil |
Select hydraulic fluid appropriate to type of seals used in the system. |
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Select viscosity rating according to system operational requirements. |
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Verification Check fluid levels |
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Cleaning and replacement |
Replace and clean hydraulic strainers/ filters. Drain and refill hydraulic system fluid. |
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Reservoirs |
Discuss types and purposes of reservoirs. |
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PNEUMATIC THEORY |
6 |
0 |
0 |
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Definition of terms |
Define the terms force, weight, mass, pressure, volume, work, PSI, PSIA, PSIG, compressibility, pneumatic energy, and kinetic energy. |
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Related concepts |
Describe the relationship between force and area (pressure); work and time (power); volume and pressure; temperature and pressure; and temperature, volume, and pressure. |
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Explain Bernoulli’s principle. |
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Describe the relationship between pneumatic leverage and travel. |
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Computation of useful measures |
Use formulas to compute pneumatic output force given input force and cylinder areas. |
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Use formulas to compute work given cylinder bore, stroke, and air pressure. |
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Use formulas to compute output cylinder travel given input cylinder travel and leverage increase ratio. |
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Symbols and schematic diagrams |
Identify symbols used to represent components of pneumatic systems. |
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Describe the operation of pneumatic systems given schematic diagrams. |
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Verify air logic with diagrams. |
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