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Troubleshooting and Maintenance
The rectifiers require low maintenance when properly installed and operated.
Besides the periodic cleaning of the heatsink fins, it is recommended to exchange the fans after 50.000 hours
operation.
Figure 5.1 on page 5-4
inspections to be performed every 6 months after rectifier start-up.
Component
Terminals, connectors.
Fans / Cooling system.
Printed circuit boards.
Power module /
Power connections.
Heatsink.
5
5-4 | UR11
shows the UR11 fans exchanging procedure. It is recommended periodic
Table 5.4 - Recommended periodic inspections - Every 6 months
Problem
Loose screws.
Loose connectors.
Dirty fans.
Abnormal acoustic noise.
Blocked fan.
Abnormal vibration.
Dust in the cabinet air filter.
Accumulation of dust, oil, humidity, etc.
Odor.
Accumulation of dust, oil, humidity, etc.
Loose connection screws.
Dust accumulation.
Dirty.
Fans
Figure 5.1 - Fan replacement
Tighten.
Cleaning.
Replace fan. Refer to
Check the fan connection.
Cleaning or replacement.
Cleaning.
Replacement.
Cleaning.
Tighten.
Cleaning.
Rails for fan sliding
Lock system for fast fan
replacement
Corrective Action
Figure 5.1 on page
5-4.
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