Yaskawa Matrix Converter User Manual
Page 358
Maintenance and Inspection
8-
11
External cooling Fan and Circulation Fan Installation Precautions
•
When installing the new external cooling fan and circulation fan, note that the air intake for their ventila-
tion is on the top of the MxC.
•
When reconnecting the power lead for the external cooling fan, place it near to the hole for the lead wire on
the fan cover so the wire does not get pinched.
•
After the power lead of the external cooling fan is passed through the hole on the fan cover, attach the rub-
ber bushing.
•
There shouldn’t be an problems if connectors CN26 and CN27 are accidentally reversed when reconnect-
ing components. This is because CN26 and CN27 have the same electrical specifications.
•
The external cooling fan is heavy. Handle it with care.
For 400 V Class MxCs with a Motor Capacity of 110kW or 160kW
Fan Unit Replacement
1. Loosen the mounting screws securing front cover 1 of the MxC, then slide and remove the front cover 1.
Note: Eight mounting screws are installed in 400 V class MxCs with a motor capacity of 110kW or 160kW.
Do not remove the mounting screws.
If the five mounting screws A are removed, the front cover 1 may fall when the three mounting screws B are loosened, possibly resulting in injury.
The front cover 1 of a large capacity MxC is large and heavy. Take care when removing and installing it.
2. Disconnect the relay connector of the fan cable from the fan unit.
Front cover 1
Mounting screws B
Mounting screws A
Fan unit
Fan cable relay connectors