109
Item Method Interval
External
checking
Make corrections immediately once the following items
are found:
• Check if there is flammable materials on the top of
and around the PCS; and if there are other factors
that may impair the system operation
• Check if the PCS and the foundation are firmly con-
nected and if there is rust
Every quarter
System
states
and
cleaning
• Check the PCS and internal devices for deforma-
tion and damages
• Check the PCS and internal devices for abnormal
noise
• Check if the PCS interior and device enclosure
temperature is too high
• Check if the PCS internal humidity is excessively
high and if there is too much dust deposition. Clean
the PCS if so
• Check if the air inlet and outlet are blocked
Once a month
Convert-
er mod-
ule
cleaning
• Check if the circuit board and the component are
clean;
• Check the temperature and dust of the heat-sink.
Use vacuum cleaner to clean the module if
necessary;
• Replace the air filter if necessary
• Notice! Check the air inlet and outlet. The device
may be damaged by overheating.
From every six
months to annually
depending on the
dust deposits.
Warning
labels
• Check if the warning labels are clearly visible. Re-
place them if necessary
Once per year
System Manual 12 Routine Maintenance