When a centrifugal pump drifts off its curve during a production shift, every minute costs tonnage. You need a fast, structured way to isolate the fault, stabilize the system, and decide what to fix now versus what can wait for a planned stop. This guide gives you a field-first process, symptom-focused diagnostics, and practical steps for slurry and process water services in mines and mineral plants. This quick guide focuses on centrifugal pump troubleshooting in field conditions.