9. Maintenance and Inspection                                                                                                   
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9
Chapter 9  Maintenance and Inspection
9.1  Daily Inspection
Safety Information
WARNING
 
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Do not connect or disconnect wiring while the power is on. 
 
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Disconnect all power and wait for several minutes. Do not touch any terminals 
before the capacitors have fully discharged.
 
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Do not modify or disconnect wiring, remove optional extension card or replace 
the cooling fan while the power is on.
 
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Make sure to connect the motor-side grounding terminal. Failure to comply 
may result in electric shock due to touching motor housing.
 
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Installation, wiring, commissioning, repair & maintenance, and component 
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CAUTION
 
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Do not run the AC drive with front cover removed.
 
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Drawings in the manual are sometimes shown without covers or protective 
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and then perform operations in accordance with instructions.
 
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Ensure that input voltage is within permissible range. Incorrect input voltage of 
main circuit may result in abnormal running.
 
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Keep combustible materials far away from the AC drive or mount the AC drive 
on incombustible surfaces such as a metal wall.
 
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correct air outlet direction of the fan. Incorrect air direction will diminish  the 
cooling effects.
 
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Do not connect or disconnect motor while the drive is running. Failure to 
comply may result in electric shock and damage to the AC drive.
 
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Use shielded cables for control circuit wiring. Meanwhile, ground the shield to 
the grounding terminal reliably.
 
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Do not modify the drive circuitry. Failure to comply will damage the AC drive.
 Ɣ Make sure to connect the output terminals of the AC drive and the motor 
terminals correctly.
 
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If it is necessary to change the motor rotation direction, exchange any two of 
UVW cables of the AC drive.
 
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Do not operate the AC drive that has been damaged. This is to prevent further 
damage to external equipments.