We understand that much of the equipment you use is specifically designed for your product or process. You are used to its’ operation and support-needs.
While you can handle the physical aspects of its maintenance and keep it running, the schematics are now either missing or so far out-of-date as to be useless. The wiring is getting stiff and breaking more and more often. Electronic components are getting harder to find and the OEM is either out of business or does not care to support such outdated equipment anymore.
What can you do?
Obtaining a replacement system is often very time-consuming and expensive. You have explored the option of having your maintenance department perform the needed upgrade but came to realize your in-house people are not qualified to make the needed changes.