After-sales is the provision of services, support and spare parts after making an initial sale.
This often occurs in the provision of complex machinery which requires regular maintenance such as motion platforms and simulators are.
Preventive maintenance of operating components is based on the assumption that it costs more to undertake a repair or replacement at the time of failure than doing the same at some predetermined time.
Total cost for this maintenance policy is the aggregate of the group replacements incurred after every replacement interval, and the cost for replacing those units that breakdown in spite of the preventive maintenance.
Apart from cost, block replacement is advantageous since the replacement operations can be carried out at a convenient time when the system is not operating, thus reducing the costly system downtime.
Which is your policy?
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