There are two ways to tell if the timing belt has been replaced. One is obvious-you are looking at a service receipt showing the replacement.
Swimlane diagrams are used whenever you need to show activities, tasks, or process steps which are being performed by different actors/roles. You can use swimlanes to group activities in an activity diagram or process flow by any category what you need: by role, by system, by department, etc.
(Heavy Duty Industrial Grade) These enclosed PIGGY-BACK float switches are designed to operate fractional horsepower pumps. The units may be used for pump-up, pump-down, alarm or pilot duty operation in most water pump applications. (Not for use in swimming pools.)