Course Purpose
Participants will be able to explain the function, design, and construction of DC cranes and the control equipment; interpret crane control prints; and troubleshoot crane control faults.
- 课程编号: MUS-305
- 类型: Instructor-led
- 技术: Craft Skills
- 类别: Understand
- 持续时间: 3天
Objectives
After completing this course, students should be able to perform the following tasks:
- Identify and explain component layout of a crane
- Describe the function and operation of electrical components associated with DC cranes
- List and describe the purpose of components located in a DC power control system
- Describe the operation of DC motors
- Analyze a DC schematic to determine failed component
- Demonstrate proper troubleshooting techniques
- Demonstrate proper maintenance associated with cranes
Who Should Attend
This course is designed for mechanical maintenance technicians.
Prerequisites
To successfully complete this course, the following prerequisites are required:
- Understanding of electrical theory and electrical systems
Next Level Learning
Once you have mastered the skills covered in this course, you may want to attend specific training, such as:
- Motor Control and Troubleshooting course (EMS-230)
Course Agenda
Day 1
- Detailing Power Circuits
- Tracing Control Circuits
- Operating Series Motors
- Operating Shunt Motors
- Listing Crane Hoist Controls
- Describing Hoist Points 1-5
- Troubleshooting Hoist Direction
Day 2
- Explaining crane lowering controls
- Defining lowering principles
- Identifying collector shoes
- Identifying collector bars
- Explaining limit switch controls
- Defining dynamic lowering
- Troubleshooting lowering direction
- Using knife switches
- Describing off-position dynamic braking
- Explaining time limit acceleration
- Tracing reversing-plugging control
Day 3
- Explaining condenser timing
- Using voltage drop acceleration
- Troubleshooting bridge control circuits
- Troubleshooting trolley control circuits
- Troubleshooting bridge/trolley circuits
- Review
- Exam
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