Mitsubishi Electric FR-A820-00046 (0.4K) Instruction Manual page 779

Guideline for life judgment using the life warning output
Part
Main circuit capacitor
Control circuit capacitor
Inrush current limit circuit
Cooling fan
*1 Initial values differ according to the inverter capacity (Refer to
NOTE
• Refer to
 Replacement procedure of the cooling fan
The replacement interval of the cooling fan used for cooling the parts generating heat such as the main circuit semiconductor
is greatly affected by the surrounding air temperature. When unusual noise and/or vibration are noticed during inspection, the
cooling fan must be replaced immediately.
 Removal (FR-A820-00105(1.5K) to 04750(90K), FR-A840-00083(2.2K) to 03610(132K))
1.
Push the hooks from above and remove the fan cover.
FR-A820-00105(1.5K) to 00250(3.7K)
FR-A840-00083(2.2K), 00126(3.7K)
2.
Disconnect the fan connectors.
3.
Remove the fan.
FR-A820-00105(1.5K) to 00250(3.7K)
FR-A840-00083(2.2K), 00126(3.7K)
*1 The number of cooling fans differs according to the inverter capacity.
 Installation (FR-A820-00105(1.5K) to 04750(90K), FR-A840-00083(2.2K) to 03610(132K))
1.
After confirming the orientation of the fan, install the fan so that the "AIR FLOW" arrow faces up.
AIR FLOW
<Fan side face>
780
7. PRECAUTIONS FOR MAINTENANCE AND INSPECTION
7.1 Inspection item
85% of the initial capacity
Estimated remaining life 10%
Estimated remaining life 10% (Power ON: 100,000 times left)
Less than 50% of the specified speed
page 341 to perform the life check of the inverter parts.
FR-A820-00340(5.5K) to 01540(30K)
FR-A840-00170(5.5K) to 00770(30K)
Fan cover
Fan
FR-A820-00340(5.5K) to 01540(30K)
FR-A840-00170(5.5K) to 00770(30K)
Judgment level
*1
page 344 for details.)
Fan cover
Fan connection
connector *1
FR-A820-01870(37K) or higher
FR-A840-00930(37K) to 03610(132K)
Fan cover
Fan connection
connector
FR-A820-01870(37K) or higher
FR-A840-00930(37K) to 03610(132K)