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Maintenance

Maintenance, inspection and repair planning

Effective MRO keeps a machine in its required condition, detects deterioration before quality is lost and restores function after a fault. The plan should distinguish routine maintenance, condition assessment, repair and permanent improvement.

DIN 31051 LOGIC

Use the correct action for the machine condition

  • Maintenance: delay wear through cleaning, lubrication, refilling and adjustment.
  • Inspection: measure and evaluate actual condition, diagnose wear causes and plan action.
  • Repair: restore the required condition by adjustment, restoration or part replacement.
  • Improvement: remove weak points and increase reliability without changing the required function.
STONE-MACHINE ROUTINE

Combine fixed intervals with condition signals

Shift checks catch water leaks, abnormal sound, vibration, oil level and visible damage. Weekly and monthly work adds deeper cleaning, filter and coolant checks, lubrication and hose inspection.

Observe → measure → diagnose → plan → repair → verify → document

Escalate when trends worsen: rising vibration, temperature, leakage, current draw, dimensional error or surface defects are more useful than waiting for a complete failure.

TriggerPlanned response
Operating-hour intervalSchedule recurring cleaning, lubrication, fluid, filter and hose checks.
Measured deteriorationSet warning and action limits for vibration, temperature, wear or process quality.
Unexpected functional lossMake safe, diagnose the cause, restore function and verify under controlled operation.
Repeated failureCorrect the root cause through design, material, protection or maintenance improvement.
SourcesSource basis: Ulrich Fischer et al., Mechanical and Metal Trades Handbook, MRO and wear per DIN 31051, p. 293; interval- and condition-driven MRO, p. 294.
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