Yaskawa Matrix Converter - Manual (Page 351)

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‹ Types and Number of Cooling Fans Used in the MxC
Cooling fans used for the MxC has two types; External cooling fan and circulation fan. External cooling fan
blows air to the MxC cooling fin. Circulation fan stirs up the air inside the MxC unit.
Table 8.3 shows the number of cooling fans used in the MxC. Refer to the spare parts list (Manual no.
EZZ020357) for the specifications of cooling fans.
Be sure to use the specified type of fan when replacing the cooling fan. If the wrong fan is used, the MxC may
fail to perform at optimum levels.
‹ How to Replace the External Cooling Fan
„ 200 V and 400 V classes, 5.5 kW or 11kW
1. Remove the terminal cover and the front cover.
Table 8.3 Number of Cooling Fans to be Used
Maximum Motor
Capacity
(kW)
200 V class 400 V class
External Cooling Fan Circulation Fan External Cooling Fan Circulation Fan
5.5 2 0 2 0
11 2 0 2 0
22 2 0 2 0
45 2 1 2 1
75 – – 2 1
110 – – 4 2
160 – – 4 2
Mounting screws for front cover
Front cover
Terminal cover
Mounting screws for terminal cover