Here's a General PMP* that I wrote for a Saudi MOH equipment maintenance project twenty years ago:-
1) Check equipment and all accessories for physical integrity and completeness.
2) Check physical condition of mains cable and plug.
3) Check physical integrity of all controls and switches.
4) Carry out scheduled servicing.**
5) Carry out functional check(s).
6) Carry out calibration check(s).
7) Carry out gas leakage checks (if applicable).
8) Test ground wire integrity and electrical leakage current(s).
9) Clean equipment and ensure that it is fully fit for use.
10) Return all controls to normal (safe) position.
11) Fix signed and dated "OK" sticker.
* Preventive Maintenance Procedure
** There's a nice "catch all" - you could add here a cross-reference to another Checklist or Procedure
