WEG CFW100 User Manual page 35

Troubleshooting and Maintenance
The inverters require low maintenance when properly installed and operated.
Table 6.2 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.
Maintenance
Fan replacement
If the inverter
is stocked
(not being
Electrolytic used):
capacitors "Reforming"
Inverter is
being used:
replace
Table 6.3: Recommended periodic inspections – every 6 months
Component
Terminals, connectors
Fans / Cooling systems
(*)
Printed circuits boards
Power module / Power
connections
DC bus capacitors
(Dc link)
Power resistors
Heatsink
(*) The CFW100 fan can be easily replaced as shown in
34 | CFW100
Table 6.2: Preventive maintenance
Interval
After 40000 operating hours.
Every year from the manufacturing
date printed on the inverter
identification label (refer to section
2.5 - Receiving and Storage).
Every 10 years.
Abnormality
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 connections screws
Discoloration / odor / electrolyte leakage
Expanded or broken safety valve
Frame expansion
Discoloration
Odor
Accumulation of dust.
Dirt
figure
Instructions
Replacement
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).
Contact WEG technical support to obtain
replacement procedures.
Corrective Action
Tighten
Clean
Replace the fan
Clean or replace
Clean
Replace
Clean
Tighten
Replace
Replace
Clean
6.1.
Table 6.3