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Maintenance
Fan replacement
Keypad battery replacement
If the converter
is stocked (not
being used):
"Reforming"
Electrolytic
capacitors
Converter is
being used:
replace
(1) The converter are factory set for automatic fan control (P0352=2), which means that they will be turned on only when the heatsink temperature exceeds a
reference value. Therefore, the operating hours of the fan will depend on the converter usage conditions (input current, cooling air temperature, etc.). The
converter stores the number of operating hours of the fan in parameter P0045. When this parameter reaches 50000 operating hours, the keypad display
will show alarm A177.
Component
Terminals, connectors
Fans / Cooling system
Printed circuit boards
Power module /
Power connections
DC Link capacitors
Power resistors
Heatsink
6.5.1 Cleaning Instructions
When it becomes necessary to clean the converter, follow the instructions below:
Ventilation system:
Cut off the converter supply and wait 10 minutes.
„
Remove the dust accumulated at the ventilation inlets with a plastic brush or a flannel.
„
Remove the dust accumulated on the heatsink fins and on fan blades using compressed air.
„
Table 6.3: Preventive maintenance
Interval
After 50000 operating hours
(1)
Every 10 years
Every year from the manufacturing
date printed in the converter
identification label (refer to
Section
2.4 IDENTIFICATION LABELS FOR
THE CFW-11 RB on page
2-9)
Every 10 years
Table 6.4: 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
Discoloration / odor / electrolyte leakage
Expanded or broken safety valve
Frame expansion
Discoloration
Odor
Dust accumulation
Dirty
Troubleshooting and Maintenance
Instructions
Replacement procedure shown in
Refer to
Chapter 4 HMI on page 4-1
Supply the CFW-11 RB (at the +UD and -UD terminal) with a
voltage 250 to 350 Vdc, during 1 hour at least. Then, disconnect
the power supply and wait at least 24 hours before using the
converter (reapply power)
Contact WEG technical support to obtain replacement procedures
Corrective Action
Tighten
Cleaning
Replace fan. Refer to
Check the fan connection
Cleaning or replacement
Cleaning
Replacement
Cleaning
Tighten
Replacement
Replacement
Cleaning
Figure 6.1 on page 6-6
Figure 6.1 on page 6-6
CFW-11 RB | 6-5
6
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