MCCCD Program Description

Electro-Mechanical Devices

Course: FAC186

First Term: 2021 Fall

Lec + Lab 3.0 Credit(s) 5.0 Period(s) 5.0 Load
Subject Type: Occupational
Load Formula: T - Lab Load

Description: Concepts, principles, maintenance, and troubleshooting of mechanical and electro-mechanical devices. Mechanical alignment of shafts, pillow blocks, gears, and couplers on mechanical equipment. Bearings removal and installation. Installation and troubleshooting of pump seals. Vernier calipers, micrometers, tachometers. Use and operation of air flow hoods for air balancing. Belt drive systems and set up and operation of variable frequency drives. Cooling tower water treatment controls and chemical additives.

MCCCD Official Course Competencies
1. Describe the characteristics of electro-mechanical devices or components. (I, III) 2. Perform replacements or repairs on pump seals, pulleys and drives, gears, bearings, and bearing shafts. (I, III-VII) 3. Measure using micrometers, vernier calipers, dial indicators, and tachometers. (II, VI) 4. Relate the principle of conservation of energy to the mechanical characteristics of gears and levers. (III) 5. Set up and align mechanical equipment. (III, IV) 6. Use appropriate lubricants. (VIII) 7. Monitor filter specifications to maintain proper system operation. (IX) 8. Program variable frequency drives. (X) 9. Measure air flow from flow hoods. (XI)
MCCCD Official Course Competencies must be coordinated with the content outline so that each major point in the outline serves one or more competencies. MCCCD faculty retains authority in determining the pedagogical approach, methodology, content sequencing, and assessment metrics for student work. Please see individual course syllabi for additional information, including specific course requirements.

MCCCD Official Course Outline
I. Selection and specification of electro-mechanical components A. Gears B. Belt drives C. Bearings D. Speed reducers E. Lubricants F. Filters II. Measuring tools A. Vernier calipers B. Micrometers C. Dial indicators D. Tachometers III. Physical laws of gears and levers A. Newton`s laws of motion B. Force action and reaction - linear motion C. Torque action and reaction - rotational motion D. Mechanical advantage concepts E. Angular velocity concepts F. Work and conservation of energy - gears and levers IV. Gear trains A. Alignment of shafts, pillow blocks, and bearings B. Gear spacing for backlash C. Measuring gear reduction D. Worm gear assembly E. Spur and bevel gear assembly F. Thrust requirements for helical gears V. Pump seals A. Stuffing box seals B. Mechanical - balanced and unbalanced C. Inside/outside seals VI. Motors speed control A. Operation of variable frequency drives B. Pulleys and belt selection C. Tachometers VII. Bearings A. Journal B. Ball C. Roller D. Taper E. Needle VIII. Lubrication and friction A. Principles of lubrication B. Types of friction C. Friction reduction techniques IX. Filters A. Viscous impingement B. Electronic C. Carbon D. HEPA X. Variable frequency drives A. Programming B. Operation of drives XI. Air flow hoods A. Use B. Operation

MCCCD Governing Board Approval Date: February 23, 2021

All information published is subject to change without notice. Every effort has been made to ensure the accuracy of information presented, but based on the dynamic nature of the curricular process, course and program information is subject to change in order to reflect the most current information available.