S&C Instruction Sheet 659-520
47
Maintenance
Clean PCS Enclosure Fans
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Inductor fan (requires removal of inductor fan cover. See Figure 35.)
13 MM SOCKET
9 N-M (7 FT-LBS)
13 MM SOCKET - 9 N-M (7 FT-LBS)
USE EXTENSION TO REACH
Figure 35. Removal of inductor fan cover.
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Three fans on the IGBT poles.
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Cabinet fan (located behind the pull-out control assembly at the top of the
enclosure).
Fan Functionality Verification
Inductor Fan
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Verify the fans spin freely.
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Verify there is no bearing noise when the fan is rotating.
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Verify there is no rust visible.
IGBT Pole Fan #1
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Verify the fans spin freely.
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Verify there is no bearing noise when the fan is rotating.
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Verify there is no rust visible.
IGBT Pole Fan #2
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Verify the fans spin freely.
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Verify there is no bearing noise when the fan is rotating.
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Verify there is no rust visible.
IGBT Pole Fan #3
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Verify the fans spin freely.
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Verify there is no bearing noise when the fan is rotating.
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Verify there is no rust visible.
Cabinet Fan
□
Verify the fans spin freely.
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Verify there is no bearing noise when the fan is rotating.
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Verify there is no rust visible.
NOTICE
If damage, rust, or any other problem is found, replace the fan .