I wasn't really trying to look at it from a semantics point Geoff.
To me "servicing" is as the manufacturer recommends. This may include intervals, levels and experience required as well as lots of other things.
Servicing is also part of PM'ing but not necessarily carried out 4 times a year
Preventative Maintenance could just be inspection or something decided upon locally.
After all by definition it should reduce the amount, or need, for repair.
I do disagree wholeheartedly with billy11 as effective PM's do reduce the need for repair or spot potential hazards or dangers.
Inspection, in my opinion, is a form of PM but at a different level.
Hopefully this is enough to keep DaveC in Oz going thru the night till the northern hemisphere resurfaces
