Operation
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At startup, when the operating time of any of the maintenance critical components is
within 90% of the preset service interval, then a maintenance warning is given, but the
systemcancontinuetooperate.Inthiscase,theoperatinginformationscreenwilldisplay
a warning triangle next to the component indicating it is near its service interval
maintenance. Warnings are repeated at regular intervals, prompting the user to take
remedialactionbeforeacriticalmaintenanceerroroccurs.
Figure7.11:ExampleofNoncriticalWarnings
At startup or during operation, when any of the operating times have become equal to
100%ofthepresetserviceinterval,acriticalmaintenancewarningisissued(seethenext
figure) and the system shuts down. The device can not be operated until the user has
taken remedial action. The source of the critical maintenance error is indicated in the
operatinginformationscreenbymeansofaredcross.
Figure7.12:CriticalMaintenanceWarning