Run: Preventive Maintenance Checklist

The technician reviews the work order, equipment ID, last maintenance date, open defects, and any prior non-conformance notes before starting. Record the equipment tag, location, and scheduled maintenance interval in the maintenance log or CMMS.

The technician verifies that the equipment is isolated, depressurized, de-energized, and secured according to site procedure. If the task requires entry into a hazardous area or exposure to energized components, the technician obtains the required permit-to-work and confirms authorization from the competent person.

The technician inspects visible components for wear, leaks, corrosion, loose fasteners, abnormal vibration, unusual noise, damaged guards, and contamination. The technician checks indicator lights, gauges, belts, hoses, filters, and mounting points against the manufacturer specification and site tolerance limits. Record any deviation from normal condition as a defect or non-conformance.

The technician applies the correct lubricant type and quantity to the manufacturer-specified points only. The technician wipes away excess lubricant and confirms that no contamination enters bearings, seals, or adjacent surfaces. Do not over-lubricate or mix incompatible lubricants.

The technician verifies the calibration status of gauges, sensors, controls, and other measurable devices included in the maintenance scope. The technician compares readings against the approved reference standard and records the measured value, tolerance, and any deviation. If a reading is outside tolerance, the technician tags the item out of service and escalates for repair or formal calibration.

The technician restores the equipment to the approved test condition and performs a controlled functional check. The technician verifies that controls, alarms, interlocks, and safety devices operate as expected within the defined tolerance. If the equipment does not operate normally, stop the test and escalate the issue.

The technician records the date, time, equipment ID, tasks completed, parts used, measurements taken, defects found, corrective actions, and any remaining open items. The technician attaches supporting evidence required by the site quality system, such as calibration records or defect notes. Ensure the record is complete, legible, and retained according to the document control procedure.

The technician determines whether any defect, deviation, or non-conformance remains unresolved after maintenance.