6-4
6-1 Inspection and Maintenance
6
Inspection and Maintenance
Main
circuit
General
Check that any
parts which may
need tightening
are secure.
{ Tighten securely. No faults
Check that no part
has indications of
overheating.
{ Visual inspection No faults
Connection
conductor
and wire
Check that there is
no distortion with
the conductor.
{
Visual inspection No faults
Check that there is
no damage to the
wire Insulation.
{
Terminal
block
Check that there is
no damage.
{ Visual inspection No faults
Inverter unit
Converter
unit
(including
the resistor)
Check the
resistance
between the
terminals.
{
Disconnect the wiring
of the Inverter main
circuit terminal block
and measure the
resistance levels
between terminals
R/L1, S/L2, T/L3 and
P/+, N/-, and between
U/T1, V/T2, W/T3 and
P/+, N/- in the range
of tester ×
1 .
Refer to
"Checking the
Inverter and
Converter".
Inverter unit
replacement
reference
Start/Stop:
Cycle 10
6
*3
Analog
tester
Smoothing
capacitor
Check that there is
no liquid leakage.
{
Visual inspection
No faults
Reference of
the replacement
period: 10 years
*2 *3
Capacity
meter
Check that the
safety valve has
not come out and
that there are no
bulges.
{
Relay
Check that there is
no abnormal
sound during
operation.
{ Acoustic inspection No faults
Check that there is
no rough surface
on the contact.
{ Visual inspection No faults
Inspection
part
Inspection
item
Inspection point
Inspection period
Inspection method Criteria Meter
Daily
Periodic
1 year 2 years
*1. The life of the smoothing capacitor depends on ambient temperature.
Refer to "Appendix-2 Product Life Curve" for the replacement reference.
*2. The life of the cooling fan varies depending on the environmental conditions, such as ambient temperature
and/or dust. Check the operation through daily inspections.
*3. The replacement reference (year/cycle) or "
Appendix-2 Product Life Curve" is based on the expected design
life, which is not guaranteed.
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