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Inspection items
Area of
Inspection Item
Inspection
Indication
Display
Meter
Load motor
Operation check
Oil component of the heat dissipation grease used inside the inverter may leak out. The oil component, however, is not flammable, corrosive, nor conductive
and is not harmful to humans. Wipe off such oil component.
It is recommended to install a device to monitor voltage for checking the power supply voltage to the inverter.
One to two years of periodic inspection cycle is recommended. However, it differs according to the installation environment.
For a periodic inspection, contact your sales representative.
NOTE
Continuous use of a leaked, deformed, or degraded smoothing aluminum electrolytic capacitor (as shown in the table
above) may lead to a burst, breakage or fire. Replace such capacitor without delay.
6.1.4
Display of the life of the inverter parts
The self-diagnostic alarm is output when the life span of the control circuit capacitor, cooling fan and each parts of the inrush
current limit circuit is near its end. It gives an indication of replacement time.
The life alarm output can be used as a guideline for life judgement.
Parts
Main circuit capacitor
Control circuit capacitor
Inrush current limit circuit
Cooling fan
POINT
Refer to page 230 to perform the life check of the inverter parts.
278
Description
(1) Check that display is normal.
(2) Check for stains.
Check that reading is normal.
Check for vibration and abnormal increase
in operation noise.
Judgement Level
85% of the initial capacity
Estimated remaining life 10%
Estimated remaining life 10%
(Power ON: 100,000 times left)
Less than 50% of the predetermined speed
Interval
Corrective Action at
Periodic
Daily
Alarm Occurrence
Contact the manufacturer.
Clean.
Stop the device and
contact the manufacturer.
Stop the device and
contact the manufacturer.
Customer's
Check
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