1. Make it safe first
Confirm the equipment is stopped and isolated before anyone reaches in. If the work needs a permit, get it. Troubleshooting is when people are most tempted to skip steps.
2. Record what you can see
Write down the time, the alarm or trip code, what the equipment was doing, and anything that changed recently: a new load, a part swap, weather, a maintenance job the day before. Details fade fast and are the best clues.
3. Check the machine history
Has this machine stopped like this before? What fixed it then? A repeat stoppage with a repeated fix often means the root cause was never found.
4. Check the manual for the symptom
Most equipment manuals include a troubleshooting table that lists symptoms, likely causes and corrective actions. Start there instead of from memory, and note the page.
5. Test the likeliest cause first, least invasive first
Rank the possible causes by how likely they are and how easy they are to check. Confirm a cause before replacing a part. Changing several things at once makes it impossible to know what worked.
6. Verify before restart
- Isolations removed and the permit closed.
- Guards and covers back in place and people clear of the equipment.
- Alarms and interlocks working, not bypassed.
- The restart plan agreed with operations.
7. Write down what fixed it
Record the real cause and the real fix, not "reset and restarted". This note is the most valuable output of the whole job, because the next person will find it.
Common mistakes
- Resetting the alarm without recording it.
- Swapping parts without confirming the cause.
- Not recording the fix, so the same job starts from zero next time.
- Repeating the same temporary fix without asking why it keeps failing.
How Plant Cortex helps
Breakdown Mode takes the equipment and the symptom and returns likely causes taken from your own manuals, each with the manual page it came from, alongside the machine's stoppage history, matching spare parts with stock levels, and any open permits or near misses on the same equipment. If the manuals do not cover the symptom it says so. It advises and records; it does not control equipment, and the equipment's own protection systems stay in charge.
General information, not legal advice. Check current regulations and your own site procedures.
Bring us three manuals. See what it answers.
The design-partner pilot is free for sixty days: a handful of your real manuals for one plant. We agree what success means before we start.