Diego Valdivia
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Transcript of Diego Valdivia
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CONSIDERATIONS REGARDING THE MAINTENANCE OF VARIABLE
FREQUENCY DRIVES
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Introduction
Many applicationswith VFD in theindustry
Adequatemaintenance isneeded
Correctivemaintenance
No trainned staff
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Metodology
Establishing a standard maintenance procedure, which optimizes the time of intervention of the equipments and prevent fatal failures
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Metodology
Annual preventive maintenance
Scheduled visits 4 to 6 in one year
Corrective maintenance
Telephone or Web assistance available
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Preventive maintenance
Runningconditions
Shut off Start up
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Running conditions
Parameter Backup Waveform
measurements
Event logs General working
conditions
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Shut off Maintenance
Cleaning andinspection
Tightening ofconnections
Check of powerelectronics andcapacitors
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Start up
Measurement ofelectrical values
Optimization ofapplicationpreformance
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Scheduled visits
Historic registerof preformance
Enviromentconditions
Spare parts
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Corrective maintenance It is not recommend
using it as the only tool
The main goal is to returnto the normal operationquickly
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Training
To train the staff in the operation of the equipmentand Troubleshooting
Autonomy of the plant maintenance team
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Maintenance contracts
Quotation req (Customer)Offer (Provider)Offerr reception and analisys (Customer)Purchase order (Customer)PO aceptation (Provider)Payment (Customer)Solution (Provider)
Service requirement (Customer)Solution (Provider)
Without ContractWith contract
This contract offers to the customer a simple and fast (no administrative delays) solution for non common problems.
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Conclusions This methodology
looks for eliminating corrective maintenance as the only tool
Trained staff is an important maintenance support
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Conclusions
Properly management of spare parts
Always count on specialists
Extend the life of the drives
It minimizes the time of detention due to equipment failure
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Thank You
Diego Valdivia P. Jorge Quinteros G.