8 Maintenance
This chapter explains how to replace the cooling fan, the regular inspections to complete, and
how to store and dispose of the product. An inverter is vulnerable to environmental conditions
and faults also occur due to component wear and tear. To prevent breakdowns, please follow the
maintenance recommendations in this section.
• Before you inspect the product, read all safety instructions contained in this manual.
• Before you clean the product, ensure that the power is off.
• Clean the inverter with a dry cloth. Cleaning with wet cloths, water, solvents, or detergents may
result in electric shock or damage to the product.
8.1 Regular Inspection Lists
8.1.1 Daily Inspections
Inspection details
All
Ambient
environment
Is the ambient
temperature and
humidity within the
design range, and is
there any dust or
foreign objects
present?
Refer to 1.3
Installation
Considerations
on page 4.
No icing
(ambient
temperature: -
10 - +40) and
no
condensation
(ambient
humidity below
50%)
Thermometer,
hygrometer,
recorder
Inverter
abnormal vibration
Visual
inspection
No abnormality
Power
voltage
Are the input and
output voltages
normal?
voltages
between R/ S/
T-phases in. the
inverter
Refer to 9.1
Input and
Output
Specification on
page 247.
Digital
multimeter
tester
Input/Output
circuit
Smoothing
capacitor
Is there any leakage
from the inside?
Visual
inspection
No abnormality -
Is the capacitor
swollen?
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