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This article describes a system for automatically scheduling preventive maintenance tasks in a machine, such as a printer, having usage sensitive components.
English (United States)
This text was extracted from a PDF file.
This is the abbreviated version, containing approximately
98% of the total text.
Page 1 of 1
Optimum Task Schedule for Scheduled Maintenance
This article describes a system for automatically scheduling preventive
maintenance tasks in a machine, such as a printer, having usage sensitive
The system requires some data processing capability, such as a
microprocessor, some form of nonvolatile storage, and a description of
scheduled maintenance tasks which are usage sensitive and stored in a data
base accessible by the microprocessor. The microprocessor is used to keep
count of predetermined usage parameters and store these counts in the
nonvolatile storage. One or more of these usage parameters is assigned top
priority so that, when the count for that parameter reaches defined values,
preventive maintenance becomes due.
Once the determination is made that preventive maintenance is due, a
program is executed in the microprocessor in which the currently stored counts
for the determined usage parameters are compared with the stored data base
relating to those parameters to identify an optimal set of tasks for that scheduled
maintenance activity. This set of tasks includes not only those tasks where the
count of a dependent usage parameter exceeds a stated criterion, but also the
ability to force an early preventive maintenance activity where the count indicates
that the preventive maintenance would be due within a predetermined time.
At completion of the preventive maintenance activity, a program is executed
to update the counts for scheduling the ne...