1. Troubleshooting
MAIN 220
Fall 2003
Chris Miller
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2. 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
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3. 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
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4. Causes of Wear and Deterioration
Normal
Relative motion
Interference of machine parts
Abnormal
Wrong parts
Abrasive action of dirt
Deteriorated Materials
Corrosive
exposure
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5. 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
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6. 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
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7. 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
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8. Breakdown Maintenance 6 steps
Talk to Operator
Read Service Manual
Remove Guards
Watch Operation
Identify Problem Areas
Lock Out Power
Redundancy
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9. 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
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10. 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?
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