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Index to Warnings and Cautions in This Manual 3
3 Index to Warnings and Cautions in This Manual
Cautions and Warnings for Orientation and Mounting Procedures
!HIGH VOLTAGE Hazard of electrical shock. Disconnect incoming power before changing wir-
ing, put on or take off optional devices or replace cooling fans. Wait ten (10)
minutes before removing the front cover. .................................................... 22
!HIGH VOLTAGE Hazard of electrical shock. Never touch the naked PCB (printed circuit board)
portions while the unit is powered up. Even for switch portion, the inverter
must be powered OFF before you change. ................................................. 27
!WARNING In the cases below involving a general-purpose inverter, a large peak current
may flow on the power supply side, sometimes destroying the converter mod-
ule: ........................................................................................................ 27
1. The unbalance factor of the power supply is 3% or higher.
2. The power supply capacity is at least 10 times greater than the inverter ca-
pacity (or the power supply capacity is 500kVA or more).
a) Abrupt power supply changes are expected, due to the conditions
such as:
b) Several inverters are interconnected with a short bus.
c) A thyristor converter and an inverter are interconnected with a short
bus.
d) An installed phase advance capacitor opens and closes.
!Caution Be sure to install the unit on flame-resistant material such as a steel plate.
Otherwise, there is the danger of fire. ......................................................... 27
!Caution Be sure not to place any flammable materials near the inverter. Otherwise,
there is the danger of fire. ........................................................................... 27
!Caution Be sure not to let the foreign matter enter vent openings in the inverter hous-
ing, such as wire clippings, spatter from welding, metal shavings, dust, etc.
Otherwise, there is the danger of fire. ......................................................... 28
!Caution Be sure to install the inverter in a place that can bear the weight according to
the specifications in the text (Chapter 1, Specifications Tables). Otherwise, it
may fall and cause injury to personnel. ....................................................... 28
!Caution Be sure to install the unit on a perpendicular wall that is not subject to vibra-
tion. Otherwise, it may fall and cause injury to personnel. .......................... 28
!Caution Be sure not to install or operate an inverter that is damaged or has missing
parts. Otherwise, it may cause injury to personnel. 2-9Be sure to install the
inverter in a well-ventilated room that does not have direct exposure to sun-
light, a tendency for high temperature, high humidity or dew condensation,
high levels of dust, corrosive gas, explosive gas, inflammable gas, grinding-
fluid mist, salt damage, etc. Otherwise, there is the danger of fire. ............. 28
!Caution Be sure to maintain the specified clearance area around the inverter and to
provide adequate ventilation. Otherwise, the inverter may overheat and cause
equipment damage or fire. .......................................................................... 29
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