Hydraulic Control Circuit Maintenance and Troubleshooting

Objectives

During this course, you will perform the following basic electrical maintenance tasks. When you return, you will be presented with a training certificate indicating that you have successfully completed the following:

• Interpret the OSHA requirements for troubleshooting and working on energized circuits
• Determine the Personal Protective Equipment (PPE) requirements for electrical troubleshooting.
• Safely and correctly verify a circuit is de-energized.
• Perform basic circuit checks for shorts, opens and ground faults using a millimeter.
• Read and interpret simple ladder and schematic diagrams.
• Perform continuity and resistance checks on relay coils and contacts, overloads, fuses, circuit breakers, switches and other control circuit components.
• Wire and troubleshoot basic electrical control circuits to develop a logical, systematic approach to troubleshooting.
• Take clamp-on ammeter readings on 3-phase circuits and interpret readings.
• Measure voltage on 3-phase Wye and Delta connected circuits and calculate percent phase imbalance as part of troubleshooting motors.
• Test single-phase power distribution systems for correct wiring.
• Use a Megohmmeter to perform the following insulation resistance tests used on motors and distribution systems: Spot Reading, Dielectric Absorption Ratio, and Polarization Index.
• Observe power quality problems and troubleshooting techniques for facility distribution systems, three-phase loads and commercial lighting.
• Read and interpret basic PLC ladder diagrams.
• Measure VFD output characteristics and observe VFD operation.
• Be ready to read and interpret your facility one-line electrical drawings and electrical floor plans.

Identify components of a successful electrical preventive maintenance program

Outline

BASIC SKILLS FOR ELECTRICAL TROUBLESHOOTING

• Safety First
• OSHA Requirements Regarding Troubleshooting and Qualified Persons
• Using Electrical Drawings
• Using Meters (mustimeters) and Circuit Measurements
• Developing a Logical, Systematic Approach to Troubleshooting

TROUBLESHOOTING CONTROL CIRCUITS

• Relays, Motor Starters and Control Devices
• Reading and Interpreting Ladder Diagrams
• Power Loss
• Control Circuit Industrial Applications
• Electric Motor Drives
• Solenoid-Operated Valves
• Heating Elements

TROUBLESHOOTING MOTORS

• Most Common Motor Problems
• Electrical Problems
• Testing Windings for Shorts, Opens and Ground Faults
• Phase Unbalance
• Mechanical Problems
• Phase Rotation Testing

TROUBLESHOOTING POWER DISTRIBUTION

• Wye and Delta Systems
• Overcurrent Protection
• Branch Circuits

TROUBLESHOOTING POWER QUALITY PROBLEMS

• Sources of Power Quality Problems
• Test Equipment for Troubleshooting Power Quality Problems
• Harmonics

TROUBLESHOOTING LIGHTING CIRCUITS

• Lighting Terminology
• Types of Lighting Circuits
• Incandescent Lighting
• Fluorescent Lighting
• HID Lighting

TROUBLESHOOTING PROGRAMMABLE LOGIC CONTROLLERS (PLCs)

• Overview of Programmable Logic Controls (PLCs)
• Reading PLC Ladder Diagrams
• Status Indicators and Error Codes
• Force and Disable
• Startup Procedures

TROUBLESHOOTING VARIABLE FREQUENCY DRIVES (VFDs)

• VFD Terminology
• VFD Basic Operation
• Components
• Pulse Width Modulation
• Types of VFDs

Common Problems and Corrective Action

Who Should Attend ?

This course is a must for anyone who works with electrical equipment and systems at industrial plants, utilities or commercial and private building facilities. General maintenance personnel, workers in cross-training programs, electricians and engineers will find this course extremely useful. Attendees come from a wide variety of industries, skill-levels, company sizes, and job titles, so if you’re not sure you’ll fit in or will benefit from the class, don’t worry – you will – as long as you work with electricity! People who will benefit from attending this course include… …

All maintenance personnel in:

• Manufacturing Plants
• Commercial Buildings
• Hospitals
• Waste Water Facilities
• Schools
• Government Buildings
• Research Facilities
• Shopping Centers
• Apartment Buildings

Including:

• All Building Maintenance Personnel
• All Plant & Facility Maintenance Technicians
• Electricians
• Mechanics
• HVAC Technicians
• Apprentices
• Boiler Operators
• Alarm & Low Voltage Technicians
• Stationary Engineers
• Building Engineers
• Maintenance Supervisors
• Multi-craft & Cross Training Personnel
• Electronic & Instrumentation Technicians
• Any person needing a basic course in Electrical Troubleshooting & Preventive Maintenance