30
6.5 Maintenance and Inspection Table
Note: Symbols used in
“
Inspection interval
”
are with different meanings:
☆
for
“
daily
”
,
○
for
“
yearly
”
and
◎
for
“
every two years
”
.
Location Inspection item Inspection details Inspection
interval
Inspection
method
Judgment criteria
Instrument
Whole unit
Ambient
environment
Check the ambient
temperature,
humidity, dust level
and etc.
☆
Refer to the
“
Precautions on
installation
”
Ambient temperature &
humidity: -10
℃
to 50
℃
,
90
％
In case multiple
inverters are installed,
the temperature at 5.5
kW or above for light
load specification: -10
℃
to +40
℃
Thermometer
Hygrometer
Whole unit
Check for
abnormal vibration
and noise.
☆
Check visually
and listen
In normal state
Power supply
voltage
Check the main
circuit voltage for
correct.
☆
Measure input
voltage
200V type
：
170V to 253V AC
400V type
：
323V to 506V AC
Multimeter
Main Circuit
The whole part
1) Check if fasteners
are loose;
2) Check if there
is any sign of
component
overheating;
3) Cleaning
○
○
○
1) Strengthen
the fasteners;
2) Check
visually.
1), 2): In normal state
Connected
conductors and
wires
1) Check if
conductors are
crooked;
2) Check if the wire
insulation is broken
○
○
1), 2): Check
visually.
1), 2): In normal state
Transformer
Check if there is
burning smell.
☆
Just smell
In normal state
Terminal block Check if there is
sign of damage.
○
Check visually. In normal state
Transistors
and diodes
Check the
resistance between
the terminals.
◎
Disconnect the
main circuit wires
and measure at
the terminals.
Multimeter
Transistors
and diodes
1) Check for liquid
leakage;
2) Check if the
safety valve is
working correctly;
3) Measure
electrostatic
capacity.
☆
☆
○
1), 2): Check
visually.
3): Measure
with a
capacitance
meter
1), 2): In normal state
3): Minimum 85% of
rated capacity
Capacitance
meter
Smoothing
capacitor
1) Check if the operation
sound is normal;
2) Check the contact
roughness.
○
○
1) Just listen
2) Check
visually.
1), 2): In normal state
Resistor
1) Check if there
is cracking on the
insulation;
2) Check if open
circuit exists.
○
○
1), 2): Check
visually.
1), 2): In normal state
Summary of Contents for AMK3000114
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