Omron 3G3JX User Manual page 203

Inspection Inspection
part item
Relay Check that there is no
Main
terminal abnormal sound
circuit
block during operation.
Resistor Check that there are
no large fissures or
discoloration in the
resistance insulation.
Cooling fan Check that there are
no abnormal vibrations
or sounds.
Check that there is no
dirt or dust.
Check that the fan is
mounted correctly.
Control Operation Check the balance of
circuit check output voltage levels
between phases in
single Inverter run.
Check that there are
no errors in trip
detection and the
display circuit
throughout the
operation of sequence
protection.
Parts General Check that there are
check
no abnormal odors or
(including
discoloration.
PCB)
Check that there is no
significant rusting.
Capacitor Check that there is no
liquid leakage or
deformation.
*1. The life of the capacitor depends on ambient temperatures. Refer to the product life curve in Appendix-2.
When the capacitor stops operating at the end of the product's life, the Inverter must be replaced.
*2. Clean the Inverter periodically. Accumulated dust in or on the cooling fan or heat sink can cause the Inverter
to overheat.
Inspection
period
Inspection point
Daily Periodic
*2
6-1 Inspection and Maintenance
Inspection
Criteria
method
Acoustic No faults
inspection
Visual No faults
inspection
Rotate Smooth rotation
manually
when the
power is off.
Visual
inspection
Visual
inspection
Measure Voltage
the phase- difference
to-phase between phases
voltage 2% max.
between
Inverter
output
terminals U/
T1, V/T2,
and W/T3.
Simulate Operates with no
the Inverter faults
trip circuit
output
Ex) Use an
external trip
etc.
Visual No faults
inspection
Visual
inspection
Standard
replacement Meter
period
⎯
⎯
Tester
2 to 3
years
Digital
multimeter
Rectifier
Voltmeter
⎯
⎯ ⎯
*1 ⎯
6-4
6