Cleaning Instructions - WEG CFW701 User Manual

Table 6.3: Recommended periodic inspections - Every 6 months
Component
Terminals, connectors
Fans /Cooling systems
Printed circuit boards
Power module/ Power
connections
Capacitors of the DC link
(Intermediate Circuit)
Power resistors
Heatsink

6.5 CLEANING INSTRUCTIONS

When it is necessary to clean the inverter, follow the instructions below:
Ventilation system:
Disconnect the inverter power supply and wait at least 10 minutes.
„
Remove the dust from the cooling air inlet by using a soft brush or a flannel.
„
Remove the dust from the heatsink fins and from the fan blades by using compressed air.
„
Electronic boards:
Disconnect the inverter power supply and wait at least 10 minutes.
„
Remove the dust from the electronic board by using an anti-static brush or an ion air gun
„
(Charge Buster Ion Gun - reference A6030-6DESCO).
If necessary, remove the boards from the inverter.
„
Always wear a ground strap.
„
Abnormality
Loose screws
Loose connectors
Dirty fans
Abnormal acoustic noise
Blocked fan
Abnormal vibration
Dust in the panel air filters
Accumulation of dust, oil, humidity, etc.
Odor
Accumulation of dust, oil, humidity, etc.
Loose connection screws
Discoloration/ odor / electrolyte leakage
Safety valve expanded or broken
Frame expansion
Discoloration
Odor
Accumulation of dust
Dirt
Troubleshooting and Maintenance
Corrective Action
Tighten
Cleaning
Replace the fan. Refer to the
Figure 6.1 on page 36
Figure 6.2 on page
Check the fan connections.
Cleaning or replacement
Cleaning
Replacement
Cleaning
Tightening
Replacement
Replacement
Cleaning
and
36.
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