What is preventive maintenance concretely?

What is preventive maintenance concretely?

By means of a customer specific checklist, a complete check up is executed.
Items on this checklist are, wearing, security, system updates and use of the machine. It includes equipment checks, partial or complete overhauls at specified periods, oil changes, lubrication and so on. In addition, workers can record equipment deterioration so they know to replace or repair worn parts.
Extraction of an oil sample for laboratory test will be analysed to check on exuberant wear of hydraulic components. You’ll obtain advice for the best daily/weekly maintenance schedule in your situation and for better and more efficient use of your installation. All this will be stated in a clear inspection report.