| Standarfd |
ACT 104 – Electric
Motors
Continues the development of skills and knowledge necessary for application and service of electric motors commonly used by the refrigeration and air conditioning industry. Topics include: diagnostic techniques, capacitors, installation procedures, types of electric motors, electric motor service, and safety.
|
Competency
Areas |
Hours |
|
|
Diagnostic Techniques |
Class |
2 |
|
Capacitors |
D. Lab |
2 |
|
Installation Procedures |
P. Lab/O.B.I. |
3 |
|
Types of Electric Motors |
Credit |
4 |
|
Electric Motor Service |
|
|
|
|
|
|
Prerequisite/Corequisite: |
| Course Guide |
|
Competency |
After completing this
section, the student will: |
Hours | ||
|
Class |
D.Lab |
P.Lab/
O.B.I. | ||
DIAGNOSTIC
TECHNIQUES |
3 |
3 |
5 | |
|
Drive
belt and pulley theory |
Discuss
the four types of belt and pulley drivers. |
|
|
|
|
Safety
considerations |
Discuss
safety concerns found in working with motors, pulleys, and drive
belts. |
|
|
|
|
Belt
guards |
Inspect
the belt guards on lab equipment. |
|
|
|
|
Belt
and pulley installation |
Remove
or install belts. |
|
|
|
|
|
Remove or install pulleys. |
|
|
|
|
Belt
alignment and adjustment |
Adjust
belt tension, such as V-belts or drive belts. |
|
|
|
|
|
Adjust pulleys. |
|
|
|
|
|
Align motors. |
|
|
|
|
Align pulleys. |
|
|
| |
CAPACITORS |
1 |
4 |
5 | |
|
Theory |
Define
a capacitor. |
|
|
|
|
|
Define the term microfarad. |
|
|
|
|
Applications |
Observe
the use of capacitors on lab equipment. |
|
|
|
|
Troubleshooting |
Properly
test various capacitors with volt ohm millimeter (VOM) and capacitor
tester. |
|
|
|
|
Safety |
Demonstrate
how to properly discharge capacitor. |
|
|
|
INSTALLATION
PROCEDURES |
3 |
3 |
10 | |
|
Application
|
Install
electric motors. |
|
|
|
TYPES OF ELECTRIC
MOTORS |
9 |
5 |
5 | |
|
Theory
|
Explain
principles of motor operation. |
|
|
|
|
|
Connect three phase motor starting components. |
|
|
|
|
Identifying
motor types |
Classify
motors used in the HVAC industry. |
|
|
|
|
Introducing
motor applications |
Discuss
motor applications. |
|
|
|
|
Starting
single phase motors and motor protection devices |
Describe
methods of starting and protecting electrical motors. |
|
|
|
|
|
Differentiate between motor windings. |
|
|
|
|
|
Connect single-phase motor starting components. |
|
|
|
|
Starting
three phase motors and motor protection devices |
Describe
methods of starting and protecting electrical motors. |
|
|
|
|
Differentiate between motor winding. |
|
|
| |
|
ELECTRIC MOTOR SERVICE |
3 |
5 |
5 | |
|
Service
and Troubleshooting |
Check
motors for proper rotation. |
|
|
|
|
|
Isolate electric motor malfunctions. |
|
|
|
|
|
Discuss installation of bearings on shafts. |
|
|
|
|
|
Remove or install electric motor components. |
|
|
|
|
|
Remove or install electric motors. |
|
|
|
|
|
Remove or install fans or blowers. |
|
|
|
|
|
Reverse motor current rotation. |
|
|
|
|
|
Measure motor current draw. |
|
|
|
|
|
Reset motor thermal overloads |
| ||