Mitsubishi Electric FR-A800 Series Instruction Manual page 819

3.
Remove the fan fixing screws, and remove the fan.
*1 The number of cooling fans differs according to the inverter capacity.
 Installation (FR-A840-04320(160K) or higher)
1.
After confirming the orientation of the fan, install the fan so that the "AIR FLOW" arrow faces up.
<Fan side face>
2.
Install fans referring to the above figure.
The tightening torque of the fan fixing screws is 0.73 N·m.
NOTE
• Installing the fan in the opposite direction of air flow may shorten the inverter life.
• Ensure that the cables are not caught when the fan is installed.
• Switch OFF the power before starting the fan replacement work. To prevent an electric shock accident, keep the inverter with
its covers on during fans replacement since the inverter circuits are charged with voltage even after power OFF.
 Smoothing capacitors
A large-capacity aluminum electrolytic capacitor is used for smoothing in the DC section of the main circuit, and an aluminum
electrolytic capacitor is used for stabilizing the control power in the control circuit. Adverse effects from ripple currents
deteriorate capacitors. Replacement intervals of capacitors vary greatly with surrounding temperatures and operating
conditions. Replace them roughly every 10 years when used in normal air-conditioned environments.
Inspecting the product visually:
• Case: Check that the sides and bottom of the capacitor have not ruptured.
• Rubber seal: Check for any noticeable bulging or severe cracks.
• Check for external cracks, discoloration, leakage, etc. It is assumed that the capacitor has reached the end of its life when
its capacity has dropped below 80% of its rated capacity.
NOTE
• The inverter diagnoses the main circuit capacitor and control circuit capacitor by itself and estimates its remaining life. (Refer
to page
818
7. PRECAUTIONS FOR MAINTENANCE AND INSPECTION
7.1 Inspection item
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Fan connection
connector
AIR FLOW
359.)
search engine
Fan *1
Fan block
3)
2)
Fan cover
1)