Inspection item
110
PRECAUTIONS FOR MAINTENANCE AND INSPECTION
Reinstallation of the internal fan (lower) (FR-F846-03250(132K) or higher)
(1) Fix the fan to the bracket with the installation screws. (tightening torque 1.4 to 1.9 N•m)
After confirming the orientation of the fan, reinstall the fan so that air flows as shown below.
(The "AIR FLOW" arrow on the fan side indicates the air flow direction.)
(2) Attach the bracket to the inverter.
(3) Reconnect the fan connector, and then place the connector case from the above.
(4) Reinstall the inverter front cover. (Refer to page 18.)
• Installing the fan in the opposite direction of air flow can cause the inverter life to be shorter.
• Prevent the cable from being caught when installing a fan.
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.
• The inverter diagnoses the main circuit capacitor and control circuit capacitor by itself and can estimate its remaining life.
(Refer to the FR-F800 Instruction manual (Detailed).)
Installation screw
Fan
Bracket
Fan
Bracket
Air flow
direction
Installation screw
View of fan side and surrounding
Bracket
Installation screw
Fan connector
Connector case
To Next Page
Loading...
