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Table7.1 Periodic inspection
Item
Inspection
Terminals,
Are all connection hardware
mounting bolts,
properly seated and bolts
connectors, etc.
tightened?
Cooling fins
Are the fins dirty or dusty?
Is there any accumulation
PCB
of conductive material or
oil mist?
Is there any abnormal noise
Cooling fan
or vibration?
Is there any accumulation
Power element
of conductive material or
oil mist?
Smoothing
Is there any abnormal odor
capacitor
or discoloration?
7. Maintenance and Inspection
7-5
Solution
Reconnect the loose connectors and
tighten the bolts.
Clean with dry compressed air:
39.2¡ ¿ 10
to 58.8 ¡ ¿ 10
Pa
4
4
(4 to 6 kg ¤ ý § ²
)
Clean with dry compressed air:
39.2¡ ¿ 10
to 58.8 ¡ ¿ 10
Pa
4
4
(4 to 6kg ¤ ý § ²
)
Replace the inverter if the board can
not be cleaned,
Replace the cooling fan
Clean with dry compressed air:
39.2¡ ¿ 10
to 58.8 ¡ ¿ 10
Pa
4
4
(4 to 6 kg ¤ ý § ²
)
Replace the capacitor.
7-6
MOSCON-E7 User's Manual
7.3 Part replacement
Inverter is composed of many parts and these parts must function
properly for normal operation of the inverter.
To maintain normal operation of the inverter for a long period of time,
it is recommended to perform a regular inspection and replace parts.
Inspection period may vary depending on the installation environment
and usage conditions.
!
Usage condition
• Ambient temperature(yearly average of 30¡ É )
• Load factor: 80% max.
• Operating rate: 12hrs max/day
Refer to the table below for the periodic inspection of the MOSCON-
E7.
Table 7.2 Part replacement
Standard Replacement
Part
Period
Cooling fan
2~5 yrs
Breaker relays
-
Aluminum capacitors
5yrs
on PCBs
Fuses
10yrs
CAUTION
Method
Replace with new part.
Inspect to determine if the
replacement is required.
Replace with new board.
Inspect to determine if
inspection is required.
Replace with new part.
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