In short this is because you need to provide as many as possible of the following (if you want alerts related to working life and total life):
- When was it manufactured?
- What is the manufacturer's recommended shelf life?
- What is the manufacturer's recommended working life in years?
- When did you purchase it?
However, here is a load more detail on how GearLog alerts on working life and total life:
GearLog has three warning indicators which can appear on an entry:
- Inspection: Overdue
- Working life: Reached
- Total life: Reached
Here is the logic used to decide which to show to you:
- If the gear is overdue inspection just that alert is shown. If you then inspect it then that warning will go and the following logic is applied.
- If the gear is not overdue inspection but has reached the end of its working life then just that warning is shown.
- If the gear is not overdue inspection and has not reached the end of its working life but has exceeded its total life then that warning is shown.
To decide if some gear is end of working life the logic uses the purchased date (in the ‘Purchase Info’ section) to mark the start of the working life AND the working life you enter in the Manufacturer info section. If you omit those values it cannot calculate working life. But if you have provided them the working life alert is shown if the time since purchase is greater than the working life. We do note that of course you yourself might have a delay between purchase and first use but decided in the balance that is was one complication too far for people in recording data! This errs on the side of caution by assuming gear goes into use soon after purchase.
To decide if some gear is end of total life the logic has 3 possible cases depending upon the data you have provided:
- If you have told the system manufactured date AND shelf life AND working life then if the time since manufactured date is greater than working life plus shelf life then the alert is show.
- OR, If you told the system your own user retirement date and it has been passed then it alerts.
- OR, If you have told the system the manufactured date and the working life BUT not provided the shelf life then if the time since manufactured date is greater than working Life then it alerts (this is to help you where you don’t know the shelf life recommended - which quite common).