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5.
5.5.
5.
Maintenance And Inspection
Maintenance And InspectionMaintenance And Inspection
Maintenance And Inspection
Preventive maintenance and inspection is required to maintain the Profibus
communication interface in its optimal condition, and to ensure a long operational
lifetime. Depending on usage and operating conditions, perform a periodic
inspection once every three to six months. Before starting inspections, always turn
off all power supplies to the inverter unit, and wait at least five minutes after the
inverter’s “CHARGE” lamp has gone out.
DANGER! Do not touch any internal parts with power applied
to the inverter, or for at least 5 minutes after power to the inverter has been
removed. A hazard exists temporarily for electrical shock even if the source
power has been removed.
Inspection Points
•= Check that the network connector screws are not loose. Tighten if necessary.
•= Check that there are no defects in any attached grounding wire terminal crimp
points. Visually check that the crimp points are not scarred by overheating.
•= Visually check the wiring and cables for damage.
•= Clean off any accumulated dust and dirt. Place special emphasis on cleaning the
ventilation ports of the inverter and all installed PCBs. Always keep these areas
clean, as adherence of dust and dirt can cause premature component failure.
•= If use of the inverter unit is discontinued for extended periods of time, turn the
power on at least once every two years and confirm that the unit still functions
properly.
•= Do not perform hi-pot tests on the inverter or Profibus interface board, as they
may damage the unit’s internal components.
Please pay close attention to all periodic inspection points and maintain a good
operating environment.