It is a common practice for the maintenance department to be responsible for the maintenance of both infrastructure and production equipment. It is also a bad practice. The theory behind it: If the maintenance department handles everything, you save money by not using outside services. While you’re at it, task the maintenance department with special projects.
The reality is the maintenance department almost certainly lacks the specialized equipment and expertise to do the infrastructure work well and at the recommended intervals. Something as seemingly simple as a cable maintenance program has much more to it than meets the eye of the casual observer. An electrical testing firm whose techs are certified by industry training bodies can take the program effectiveness from 30% to 99%.
Maintenance also lacks the comparative data to effectively differentiate normal from problematic. Not only does an outsourced power monitoring service have that, they also have accumulated a database of solutions and best practices from (typically) hundreds of facilities.
Bonus: These outside services are usually on a different budget.
