³Ô¹Ïtv / SOLDERING ENGINEERINGMeasurement worksheet: Oven maintenance interval record01Operating hours since recordedworkActual counter/history, not calendar time.02Entered interval · operatinghoursYour OEM/program interval; no universalinterval is provided.03Current conditionAn alarm or abnormal condition overrides aroutine schedule calculation.Explanatory schematic. Not to scale, a process recipe, acceptance limit or inspection evidence.