Mitsubishi Electric FR-V500 Series Instruction Manual page 102

Removal
1) Remove the front cover and wiring cover. (Refer to page 4.)
2) Push the catches from above and remove the fan cover.
3) Disconnect the fan connectors.
4) Remove the fan.
Reinstallation
1) After confirming the orientation of the fan, reinstall the fan so that the
arrow on the left of "AIR FLOW" faces up.
AIR FLOW
CAUTION
Installing the fan in the opposite air flow direction can
cause the inverter life to be shorter.
2) Reconnect the fan connectors.
When wiring, use care to avoid the cables being caught by the fan.
3) Reinstall the fan cover.
(2) Smoothing capacitors
A large-capacity aluminum electrolytic capacitor is used for smoothing in the main circuit DC section, and an
aluminum electrolytic capacitor is used for stabilizing the control power in the control circuit. Their characteristics
are deteriorated by the adverse effects of ripple currents, etc. The replacement intervals greatly vary with the
ambient temperature and operating conditions. When the inverter is operated in air-conditioned, normal
environment conditions, replace the capacitors about every 10 years.
The appearance criteria for inspection are as follows:
1) Case: Check the side and bottom faces for expansion
2) Sealing plate: Check for remarkable warp and extreme crack.
3) Check for external crack, discoloration, fluid leakage, etc. Judge that the capacitor has reached its life when
the measured capacitance of the capacitor reduced below 80% of the rating.
(3) Relays
To prevent a contact fault, etc., relays must be replaced according to the cumulative number of switching times
(switching life).
<Fan side face>
99
Replacement of parts
Fan cover
Fan
Fan connectors
<Example: FR-V520-5.5K>
7