Cleaning Instructions - WEG CFW-11 User Manual

Troubleshooting and Maintenance
Maintenance
Fan replacement
Keypad battery replacement
Electrolytic If the inverter is stocked
capacitors (not being used):
"Reforming"
Inverter is being used:
replace
(1) The inverters are set at the factory 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 inverter usage conditions (motor current, output frequency, cooling
air temperature, etc.). The inverter 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 is necessary to clean the inverter, follow the instructions below:
Ventilation system:
6
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 (Charges Burtes
Ion Gun - reference A6030-6DESCO).
If needed, remove the boards from the inverter.
Always wear a ground strap.
6-10 | CFW-11
Table 6.3 - Preventive maintenance
Interval
After 50000 operating hours
Every 10 years
Every year from the manufacturing
date printed
identification label (refer to
IDENTIFICATION LABELS FOR THE
CFW-11 on page
Every 10 years
Table 6.4 - Recommended periodic inspections - Every 6 months
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 connection screws
Discoloration/odor/electrolyte leakage
Expanded or broken safety valve
Frame expansion
Discoloration
Odor
Dust accumulation
Dirty
(1)
Replacement procedure shown in
Refer to the Chapter 4 HMI on page 4-1
Apply power to the inverter (voltage between 220 and
in the inverter 230 Vac, single-phase or three-phase, 50 or 60 Hz) for at
Item 2.4 least one hour. Then, disconnect the power supply and wait
at least 24 hours before using the inverter (reapply power)
2-7)
Contact WEG technical support
Tighten
Cleaning
Replace fan. Refer to the
Check the fan connection
Cleaning or replacement
Cleaning
Replacement
Cleaning
Tighten
Replacement
Cleaning
Instructions
Figure 6.1 on page 6-11
Corrective Action
Figure 6.1 on page 6-11