6
CFW-11M RB |6-9
Troubleshooting and Maintenance
Rails for fan sliding
Lock system for fast fan
replacement
Fans
Figure 6.2 -
Fan replacement
Table 6.4 -
Recommended periodic inspections - Every 6 months
Component
Problem
Corrective Action
Terminals, connectors
Loose screws
Tighten
Loose connectors
Fans / Cooling system
Dirty fans
Cleaning
Abnormal acoustic noise
Replace fan. Refer to figure 6.2.
Check the fan connection.
Blocked fan
Abnormal vibration
Dust in the cabinet air filter
Cleaning or replacement
Printed circuit boards
Accumulation of dust, oil, humidity, etc.
Cleaning
Odor
Replacement
Power module /
Power connections
Accumulation of dust, oil, humidity, etc.
Cleaning
Loose connection screws
Tighten
DC bus capacitors
(DC Link)
Discoloration / odor / electrolyte leakage
Replacement
Expanded or broken safety valve
Frame expansion
Power resistors
Discoloration
Replacement
Odor
Heatsink
Dust accumulation
Cleaning
Dirty