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Course Title:
Course Number:
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Operation & Essential Elements of Control Systems
CS-2 (Mechanical)
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This
course combines conceptual information with hands-on experiences
regarding the charging of air conditioning systems; operating
conditions of typical air conditioning systems; expansion
devices under load conditions; compressor efficiency; electric
motors; mechanical and electrical trouble-shooting. |
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Download/print this course outline |
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DAY 1 SUBJECT:
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Reading Electrical Diagrams, Electric Motors, Applications
of Motors
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GOAL:
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For students to understand diagrams and use of motors and
their application.
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SUBJECT CONTENTS:
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Drawing
Electrical Diagrams — What motors should be used on different
applications |
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METHODS/
TECHNIQUES:
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Class room, systems room, electric room
Explain wiring diagrams and who the controls interlock with
motors and motor controls.
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RESOURCES:
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RACT Unit 17 page 285 thru 303
Unit 18 motors and applications
Constructor Software
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EVALUATION:
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Questions on end of page 303 and page 317
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| OTHER: |
Handouts of diagrams
Handouts of different types of motors
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DAY 2 SUBJECT:
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Schematic reading, electrical testing, lockout &
tag out procedures
Power supplies, transformer, rectification circuits
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GOAL:
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For students to understand transformers, single-phase motor
and capacitors.
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SUBJECT CONTENTS:
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Schematic
reading lock out & tag out prod, power supplies, motors
& motor control |
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METHODS/
TECHNIQUES:
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Classroom,
lecture, systems room, PDF, electrical room, wire & test. |
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RESOURCES:
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RACT unit
19 & unit 20 |
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EVALUATION:
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Question
in RACT, end of unit 19 and unit 20 |
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Handouts,
system room motors and controls, electrical room motors and
controls |
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DAY 3 SUBJECT:
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Motors and motor starting. Three-phase motor, across
the line start. Part start wiring and two speed compressors.
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GOAL:
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For student to understand different motors, 1ph, 3ph, across
the line start and part start winding.
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SUBJECT CONTENTS:
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Motors starting, winding types
Two speed, three speed. Variable frequency drives.
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METHODS/
TECHNIQUES:
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Class
room, systems room, electrical room, PDF. |
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RESOURCES:
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Motors & Controls in shop and Electrical room
RACT
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EVALUATION:
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Question
end of RACT unit 20 |
| OTHER: |
Handouts, motors and controls
Systems room and electrical room
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DAY 4 SUBJECT:
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Package system vs. split systems
Air and water source heat pumps schematic reading,
computer augmented study.
Electrical schematic
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GOAL:
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For student to understand the difference between systems,
air, water schematic drawing and reading.
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SUBJECT CONTENTS:
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RACT 43
drawing in computer room |
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RESOURCES:
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RACT 43
Handouts
Computer course
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| OTHER: |
Handout
Diagrams
RACT 43
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DAY 5 SUBJECT:
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Identify various refrigeration system components
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GOAL:
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For students to understand refrigeration leak, check and
troubleshoot systems, computer augmented using constructor
software.
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SUBJECT CONTENTS:
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PBF’s troubleshoot system & survey
Split systems
Computer augmented electrical
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METHODS/
TECHNIQUES: |
Hands-on troubleshooting in teams of 4 in systems room.
Classroom, lecture.
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RESOURCES:
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PBF’s system room equipment
Computer room augmentation electrical
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EVALUATION:
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Evaluation of computer generated drawing and completion
of PBF’s
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| OTHER: |
Handouts
Systems room equipment
Computer room software
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DAY 6 SUBJECT:
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Troubleshooting of refrigeration systems
PBF’s
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GOAL:
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For students to be able to troubleshoot existing refrigeration,
A/C systems
Toggle wiring. Wire toggle switch boards in systems room.
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SUBJECT CONTENTS:
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A/C &
Refrigeration unites in systems room
Wire toggle boards |
METHODS/
TECHNIQUES: |
Hands-on
troubleshooting
Hands-on wiring of boards |
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RESOURCES:
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Equipment
in system room
RACT
Toggle boards |
| EVALUATION: |
PBF completion
grading |
| OTHER: |
Handouts
Completion of boards |
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DAY 7 SUBJECT:
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Controls
and switches
Schematic development of circuits
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GOAL:
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For student to understand controls SPDT switches. Control
and different voltage.
Schematic development
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SUBJECT CONTENTS:
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DPST switches,
control circuits that contain various voltages and switches
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METHODS/
TECHNIQUES:
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PBF, systems
room, lecture room
Computer room, electrical room |
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RESOURCES:
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Systems
room equipment, computer room software.
Electrical (controls in electric room) |
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EVALUATION:
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PBF completion computer room completion
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| OTHER: |
Handouts
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DAY 8 SUBJECT:
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Make equipment list and identify components
of HVAC system. VAV boxes and chiller package system.
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GOAL:
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For student to be able to identify and understand functions
of units in systems room.
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SUBJECT CONTENTS:
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VAV boxes,
chiller, package system and built up system
Computer, smoke purge system, survey data into computer. |
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METHODS/
TECHNIQUES:
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PBF’
unites in systems room
Computer data input |
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RESOURCES:
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System
room equipment
Computer room
RACT unit 17 |
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EVALUATION:
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Completion
of PBF’s and data input
Question end of unit 17 |
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DAY 9 SUBJECT:
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Economizers, freeze protection demand
controls
Toggle wiring
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GOAL:
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For students to be able to understand and troubleshoot
economizers, freeze protectors and demand controls
Different toggle switches
DPST, SPST, SPDT, etc.
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SUBJECT CONTENTS:
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Systems
room equipment
RACT unit 19, unit 20 |
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METHODS/
TECHNIQUES:
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Lecture,
systems room, PBF’s
Computer room |
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RESOURCES:
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RACT
Systems room
Computer software |
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EVALUATION:
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Completion
of PBF’s
Completion of computer drawing |
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DAY 10 SUBJECT:
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From a job description, make a schematic
and pictorial diagram, tuning it into a lab project.
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GOAL:
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PBF
Survey and troubleshoot a unit, split system and built up
HVAC system
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SUBJECT CONTENTS:
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Equipment
in systems room |
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METHODS/
TECHNIQUES:
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Systems
room survey and troubleshoot system in groups of 4. |
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RESOURCES:
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Systems
room equipment |
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EVALUATION:
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Completion
of PBF’s |
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DAY 11 SUBJECT:
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Survey and troubleshoot rooftop, split
system and built up systems
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GOAL:
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For students to understand survey and troubleshooting of
rooftop, split systems and package systems
Electrical switches and controls
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SUBJECT CONTENTS:
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Units
in systems room
Lecture room
Computer room |
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METHODS/
TECHNIQUES:
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Lecture
room, computer software and hands-on troubleshooting. PBF’s. |
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RESOURCES:
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RACT
Computer software
Equipment in systems room |
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EVALUATION:
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Completion
of PBF
Completion of computer projects
Handouts |
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DAY 12 SUBJECT:
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Install controls and understanding operation.
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GOAL:
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For students to install reverse acting controls, tower
fan cycling, low ambient and motor master controls
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SUBJECT CONTENTS:
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Reverse
acting pressure control. Tower fan cycling control and low
ambient controls on split system units. Controlling head pressure
in low ambient conditions. |
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METHODS/
TECHNIQUES:
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PBF’s
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RESOURCES:
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Systems
room
Handouts on different types of controls |
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EVALUATION:
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Completion
of PBF’s |
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| DAY 13 SUBJECT:
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Complete
PBF’s from class 12
Installation of motorized valves and actuators, water pumps
and compressor valve plates. |
| GOAL: |
For students
to perform hands-on replacement of controls, valves, and compressor
repair. |
| SUBJECT CONTENTS:
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PBF’s
motorized valves, actuator water pumps, and compressors. |
METHODS/
TECHNIQUES: |
System
room hands-on replacements
Lecture room
Parts replacement |
| RESOURCES: |
RACT
Handouts
Equipment room |
| EVALUATION: |
Completion
of PBF’s |
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| DAY 14 SUBJECT:
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Final
Exam |
| GOAL: |
Students
present finished notebooks |
| OBJECTIVES: |
Evaluation
of PBF’s and notebooks |
METHODS/
TECHNIQUES: |
Exam and
notebooks (evaluation) |
