Troubleshooting MAIN 220 Fall 2003 Chris Miller 11/11/2018

Troubleshooting Objectives How to identify issues Understand the 4 main decisions for troubleshooting Types of troubleshooting Developing Troubleshooting Skills 110 Developing Electrical Troubleshooting Skills 210 Rockis textbook chapter 18 11/11/2018

4 Basic Decisions Recognize normal Operations Detect Developing Problems Diagnose Probable Causes of Failure Repair Equipment least possible disruption FOR MORE INFO... TCP TRAINING Troubleshooting Techniques 110 11/11/2018

Causes of Wear and Deterioration Normal Relative motion Interference of machine parts Abnormal Wrong parts Abrasive action of dirt Deteriorated Materials Corrosive exposure 11/11/2018

Ask yourself When How did the problem first occur Is it continuous, or intermittent How did the operator become aware of it What is the machine doing, not doing that interferes with output Are there samples of output that can be examined 11/11/2018

Common Issues Leaks in air, steam, water, power Dripping Lubricant Electric Arcing Changes in sound of machinery Correct parts materials Machine set up for that application Loose belts 11/11/2018

Breakdown Maintenance Need to correctly fix and get running Safety can not be compromised Some times a quick slap to run until unit is no longer needed or during a shut down 11/11/2018

Breakdown Maintenance 6 steps Talk to Operator Read Service Manual Remove Guards Watch Operation Identify Problem Areas Lock Out Power Redundancy 11/11/2018

Effective Emergency Troubleshooting Techniques Always get as much info as possible on problem Do not waste time on non-issues Never make repairs without considering if it might cause more damage Make sure solution actually solves the problem Use only trial and error as last result Learn for experience on each machine 11/11/2018

Here is a thought? You have a guide rail that is difficult to replace. You can spend 3 hours replacing it or you can weld up material on it and pencil grind it down again. That would take 1 hour. What do you do? What questions must be answered before you choose? What questions should you ask? 11/11/2018