The aim of preventive maintenance is to improve system availability and minimize failures. For this purpose, inspection and maintenance measures are carried out, especially when possible before it comes to system failures or problems at assembly workplaces.
The maintenance intervals can be planned in different ways:
- after an elapsed calendar period (typically)
- after a certain plant equipment runtime (advantageous for irregular plant utilization)
- for a given production volume or for example by the number of cycles
Ideally, the maintenance plan is such that maintenance is provided at the optimal time. The more precisely runtime and plant output and tools can be monitored and cumulated, the more reliable the optimal maintenance intervals can be observed.