Mitsubishi FR-E500 Series Instruction Manual page 162

" " " " Reinstallation
1) After confirming the orientation of the fan,
reinstall the fan to the cover so that the
arrow on the left of "AIR FLOW" faces in
the opposite direction of the fan cover.
Note: If the air flow is set in the wrong
direction, the inverter life can be
shorter.
2) Reinstall the fan cover to the inverter.
Run the cable through the wiring groove to
prevent it from being caught between the
chassis and cover.
3) Reconnect the cable to the connector.
4) Reinstall the wiring cover.
(2) Smoothing capacitors
A large-capacity aluminum electrolytic capacitor is used for smoothing the DC in the
main circuit, and an aluminum electrolytic capacitor is also used for stabilizing the
control power in the control circuit.
Their characteristics are adversely affected by ripple current, etc. When the inverter is
operated in an ordinary, air-conditioned environment, change the capacitors about
every 5 years. When 5 years have elapsed, the capacitors will deteriorate more rapidly.
Check the capacitors at least every year (less than six months if the life will be expired
soon). Check the following:
1) Case (side faces and bottom face for expansion)
2) Sealing plate (for remarkable warp and extreme crack)
3) Appearance, external cracks, discoloration, leakage.
When the measured capacitance of the capacitor has reduced below 85% of the
rating, change the capacitor.
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PROTECTIVE FUNCTIONS
AIR FLOW
(For 5.5K, 7.5K)
*Wire the cables using care so that they
are not caught by the cooling fan.
5