Inspection item
150
PRECAUTIONS FOR MAINTENANCE AND INSPECTION
• 37K converters or higher
1) Remove the fan cover fixing screws, and remove the fan cover.
2) Disconnect the fan connector and remove the fan block.
3) Remove the fan fixing screws, and remove the fan.
4) Replace the fan with a new one. Before installing the new fan, check the orientation of the fan to be sure that the "AIR
FLOW" arrow printed on the side of the fan points upward.
5) Follow the removal procedure in reverse order to install the fan on the converter. Be sure to keep fan cables inside
the finger guard (fan cover).
Replacement procedure of the box-type reactor cooling fan
1) Remove all cables from the reactor, and dismount the reactor from an enclosure.
2) Remove the fan fixing screws.
3) Disconnect the fan connector. The fan can be detached from the reactor.
4) Replace the fan with a new one. Before installing the new fan, check the orientation of the fan to be sure that the "AIR
FLOW" arrow printed on the side of the fan points upward.
5) Follow the removal procedure in reverse order to install the fan on the reactor. Be sure to keep fan cables inside the
finger guard (fan cover).
NOTE
• If the fan is installed in a wrong orientation, wrong direction of air flow may shorten the converter life.
• Prevent the cable from being caught when installing a fan.
• Switch the power OFF before replacing a fan. To prevent an electric shock accident, keep the converter or the reactor with its
cover on during fan replacement since the circuits inside the converter or the reactor are charged with voltage even after
power OFF.
Fan
Fan block
Fan cover
Fan connection
connector
1)
2)
3)
Remove the
screws.
Disconnect the fan connector.
Finger guard (fan cover)
Summary of Contents for FR-XC-11K
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