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temperature of the inverter.
③
If there is abnormality noise other than ordinary sound of operation, inspect presence of
foreign substances inside the product.
7.3.6 State of grounding
①
Check the state of connection or cut in the grounding cable.
②
Check the type of grounding works at the time of initial installation and measure the
grounding resistance in accordance with the specifications of the corresponding grounding
works.
7.3.7 Input circuit breaker
①
Inspect the operation of lever and breakage of DC switch at the bottom of inverter.
②
Check whether power is cut off when the lever is in OFF position and power is properly
applied when the lever is in ON position.
7.3.8 Display window screen
①
Check whether the display composition of the display window is same as that of the 4.5
Display window screen items.
②
Check discoloration of LCD window.
7.3.9 Control power
①
There is SMPS circuit inside the inverter for operation of inverter.
②
In the event of abnormality of the corresponding SMPS, inverter will issue warning or error
code and its operation will be stopped.
③
Inspect SMPS and, in the event of occurrence of error, contact the manufacturer.
7.3.10 Relay/MC
①
Relay/MC (different for each model) inside the inverter gets turned ON/OFF according to
the status of operation of inverter to control the state of output.
②
At the time of stoppage / operation of inverter, inspect whether the relay / MC operation
sound (clicking sound) occurs and whether error has occurred. In the event of occurrence
of abnormality in relay/MC, errors such as Relay Short/Open, MC Error, etc. will occur and
stops the operation of inverter.
7.3.11 Capacitor
①
Capacitor for controlling of power inside the inverter has been installed.
②
Even if the inverter operation has been stopped, there could still be large amount of power
remaining in the capacitor. Take precautions against electrocution accidents at the time of
inspection.
③
Visually check the breakage and denting of capacitor.
④
If the electrolytic solution inside the capacitor has leaked outside, contact the
manufacturer immediately.
7.3.12 Other inspections
①
Inspect breakage and contamination of the internal circuit board (PCB) an components of
inverter.
②
Visually check the contact point of circuit board, connection section of connector,
deformation and loss due to fire of the components.
③
Please contact the manufacturer in the event of problems that occur in the circuit board or
internal components.
7.3.13 Cleaning
①
Our inverter is designed as indoor and outdoor types depending on the models.
②
Internal aspects of the models below IP44 needs to be cleaned in the interval of 6 months
while the products below IP65 in the interval of 12 months.
③
However, adjust the cleaning interval in accordance with the corresponding external
environment.
