WEG CFW100 User Manual - page 35
34 | CFW100
Troubleshooting and Maintenance
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The inverters require low maintenance when properly installed and operated.
presents the main procedures and time intervals for preventive maintenance.
provides recommended periodic inspections to be performed every 6 months after the inverter
start-up.
Table 6.2: Preventive maintenance
Maintenance
Interval
Instructions
Fan replacement
After 40000 operating hours.
Replacement
Electrolytic
capacitors
If the inverter
is stocked
(not being
used):
“Reforming”
Every year from the manufacturing
date printed on the inverter
identification label (refer to
Apply power to the inverter (voltage between
220 and 230 Vac, single-phase, 50 or 60 Hz) for
at least one hour. Then, disconnect the power
supply and wait at least 24 hours before using
the inverter (reapply power).
Inverter is
being used:
replace
Every 10 years.
Contact WEG technical support to obtain
replacement procedures.
Table 6.3: Recommended periodic inspections – every 6 months
Component
Abnormality
Corrective Action
Terminals, connectors
Loose screws
Tighten
Loose connectors
Fans / Cooling systems
(*)
Dirty fans
Clean
Abnormal acoustic noise
Replace the fan
Blocked fan
Clean or replace
Abnormal vibration
Dust in the cabinet air filter
Printed circuits boards
Accumulation of dust, oil, humidity, etc.
Clean
Odor
Replace
Power module / Power
connections
Accumulation of dust, oil, humidity, etc.
Clean
Loose connections screws
Tighten
DC bus capacitors
(Dc link)
Discoloration / odor / electrolyte leakage
Replace
Expanded or broken safety valve
Frame expansion
Power resistors
Discoloration
Replace
Odor
Heatsink
Accumulation of dust.
Clean
Dirt
(*) The CFW100 fan can be easily replaced as shown in