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How to Catalog and Analyze Motors and Drives

June 11, 2014 - Maintenance & Operations

Managers can use computerized maintenance management systems (CMMS) to catalog and analyze motors and drives by treating them as parts of a three-component system: the equipment the system drives, the drive itself, and the motor. One example would be a specific air supply or exhaust blower connected to a motor by a V-belt drive that transfers power and adjusts speed. It would consist of a sheave mounted on the motor shaft and a sheave mounted on the blower shaft.

Managers can use these steps to more efficiently catalog and analyze motors and drives:

  • Fill in all the fields in the CMMS equipment-record template at the time of installation or replacement.

  • Create reason codes — such as broken part, corrosion, or operator error — and action codes — which can include cleaned part, replaced part, and adjusted part — in the work-order set-up for further root-cause analysis.

  • Use written work orders for emergencies, routine repairs, and preventive maintenance and predictive maintenance activities. Record completed work, labor and materials included in the job, and reason and action codes, where applicable. Most CMMS automatically transfer work-order data to the equipment history when the technician closes the work order.

  • Analyze the collected data, including mean time between failures, mean time to repair, and root-cause analysis, to determine the cause of the failure. Was it corrosion, wear, heat, operator error, or another cause? The data, along with energy costs, form the basis for decisions on continuous improvement, repair or replacement, and comparison of alternatives to motors and drives.


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