Fuji Electric FRENIC-Ace series, User Manual

Page: 18 / 788

xvi
Maintenance and inspection, and parts replacement
• Before proceeding to the maintenance/inspection jobs, turn OFF the power and wait at least five minutes
for inverters FRN0115 E2■ -2

/ FRN0072E2■ -4

/ FRN0011 E2■ -7

or below, or at least ten minutes
for inverters FRN0085E2■ -4

or above . Make sure that the LED monitor and charging lamp are turned
OFF. Further, make sure, using a multimeter or a similar instrument, that the DC link bus voltage between the
terminals P(+) and N(-) has dropped to the safe level (+25 VDC or below).
Otherwise, an electric shock could occur.
• Always carry out the daily and periodic inspections described in the instruction/user's manual. Use of the
inverter for long periods of time without carrying out regular inspections could result in malfunction or
damage, and an accident or fire could occur.
• It is recommended that periodic inspections be carryout every one to two years, however, they should be
carried out more frequently depending on the usage conditions.
• It is recommended that parts for periodic replacement be replaced in accordance with the standard
replacement frequency indicated in the user's manual. Use of the product for long periods of time without
replacement could result in malfunction or damage, and an accident or fire could occur.
• Contact outputs [30A/B/C] use relays, and may remain ON, OFF, or undetermined when their lifetime is
reached. In the interests of safety, equip the inverter with an external protective function.
Otherwise, an accident or fire could occur.
• Maintenance, inspection, and parts replacement should be made only by qualified persons.
• Take off the watch, rings and other metallic objects before starting work.
• Use insulated tools.
Otherwise, an electric shock or injuries could occur.
• Never modify the inverter.
Doing so could cause an electric shock or injuries.
Disposal
• Treat the inverter as an industrial waste when disposing of it.
Otherwise injuries could occur.
GENERAL PRECAUTIONS
Drawings in this manual may be illustrated without covers or safety shields for explanation of detail parts.
Restore the covers and shields in the original state and observe the description in the manual before starting
operation.
Icons
The following icons are used throughout this manual.
This icon indicates information which, if not heeded, can result in the inverter not operating to full
efficiency, as well as information concerning incorrect operations and settings which can result in
accidents.
This icon indicates information that can be useful when performing certain settings or operations.

This icon indicates a reference to more detailed information.