Reducing the Failure Rate of Dishwashers by Analyzing the Service Life of Spare Parts using System Reliability Calculation
Keywords:Reliability, Mean Time between Failures, Preventive Maintenance, Reduce Failure of Machine, Failure Mode and Effects Analysis
This research aims to reduce and analyze the failure of food industry dishwashers machine. From analyzing data we find that dishwasher model A has the highest frequency of being repaired. We analyze and find the root cause of machine failure by using the analysis tool Pareto chart to prioritize the failure root cause. Fishbone Diagram is applied in finding relatives between the problem and root cause in each part and uses reliability to define the frequency of preventive maintenance. From analysis, we find that machine can’t operate is the main problem for machine breakdown, and related to machine parts are the ON/OFF switch, RUN Switch, Door Switch, and Magnetic Switch. The preventive maintenance plan of dishwasher model A by changing the machine parts which have a high effect on machine breakdown is the ON/OFF switch, RUN Switch, Door Switch 1.5 years per time, and Magnetic Switch 2 times per year. From this research, it is found that the dishwasher machine model A has frequencies of failure reduced from 37.13% to 29.50% and has increased reliability from 17% to 56% from the whole machine.
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