We have two CNC horizontal lathes, one 1845SX and one 2460SX. I am in process to write some maintenance procedures and I am interested how I can check the operating time this machines already have. The operator does not know how to check the total operating time and the Operation Manual requires, for example, to flush and drain the Headstock oil every 1500-2000 hours. Is there a possibility to find how many hours this machines where in operation? I am not a CNC "guru". Thank you.