Table 8-1 Content and Notice for Daily Maintenance & Inspection
No.
Inspection
Item
Inspection Part Inspection Content Judgment Standard
1 Display LED Monitor
Whether the display is
abnormal.
Determine according to the
use state (e.g. when nothing is
displayed after power is
supplied, the braking resistor
and the earthing insulation
can be checked )
2
Cooling
System
Fan
Check whether it rotates
flexibly, whether there is
abnormal sound, and
whether it is jammed by
dust.
No abnormality
3
Frequency
Inverter
Body
Inside the Machine
Case
Temperature rising,
abnormal sound, peculiar
smell and accumulated
dust
No abnormality
4
Use
Environment
Surrounding
Environment
Temperature, humidity,
dust and harmful gas, etc
According to Clause 2.2
5 Voltage
Input & Output
Terminals
Input and output voltage
According to the technical
specifications in Appendix 2
6 Load Motor
Temperature rising,
abnormal sound and
vibration
No abnormality
8.1.2 Regular Maintenance
The power supply must be cut off before regular maintenance. Only after the monitor has no display and charge
LED has lit off 5-10 minutes can the maintenance begin. On the other hand, you will risk electric shock because
there are storage capacitors within the inverter that will hold charge even after the input power is disconnected.
The regular maintenance contents and cautions are listed in Table 8-2.
Table 8-2 Content of Regular Maintenance & Inspection
Inspection Item Inspection Content Countermeasure
Screws of main circuit
terminals and control
circuit terminals
whether the screws are
loosened
Tighten them with the screwdrivers
Heat Radiation Fin whether there is dust Purge it with the 4~6kg/cm
2
dry compressed air
PCB (Printed Circuit
Board)
whether there is dust Purge it with the 4~6kg/cm
2
dry compressed air
Cooling Fan
whether it rotates flexibly,
whether there is abnormal
sound or vibration, and
whether is accumulated dust
or blocking object
Replace the cooling fan and clear the dust & foreign
objects
Power Element whether there is dust Purge it with the 4~6kg/cm
2
dry compressed air
Electrolytic Capacitor
Check whether there is
color variation, peculiar
smell, bubbles and liquid
leaked, etc
Replace the electrolytic capacitor
Braking Capacitor
whether the earthing
insulation is good
Put the braking resistor at the dry and insulated
place
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