Weq 105 A, Руководство пользователя

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Troubleshooting and Maintenance
6-8
6
Do not perform any withstand voltage test!
If needed, consult WEG.
The inverters require low maintenance when properly installed and operated . Table 6.3 presents main procedures
and time intervals for preventive maintenance. Table 6.4 provides recommended periodic inspections to be
performed every 6 months after inverter start-up.
Table 6.3
- Preventive maintenance
Maintenance Interval Instructions
Fan replacement After 50.000 operating hours.
(1)
Replacement procedure shown in figures 6.1 and 6.2.
Keypad battery replacement Every 10 years. Refer to chapter 4.
Electrolytic
capacitors
If the inverter is stocked (not
being used):
“Reforming” Every year from the manufacturing
date printed in the inverter
identification label (refer to item
2.4). Apply power to the inverter (voltage between 200 and
230 Vac, single-phase or three-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.
Note:
(1) The inverters 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 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 50.000 operating hours, the keypad display will show alarm A177.
Component Problem Corrective Action
Terminals, connectors Loose screws Tighten
Loose connectors
Fans / Cooling system Dirty fans Cleaning
Abnormal acoustic noise Replace fan. Refer to figure 6.1.
Blocked fan Check the fan connection.
Abnormal vibration
Dust in the cabinet air filter Cleaning or replacement.
Printed circuit boards Accumulation of dust, oil, humidity, etc. Cleaning
Odor Replacement
Power module / Accumulation of dust, oil, humidity, etc. Cleaning
Power connections Loose connection screws Tighten
DC bus capacitors Discoloration / odor / electrolyte leakage Replacement
Expanded or broken safety valve
Frame expansion
Power resistors Discoloration Replacement
Odor
Heatsink Dust accumulation Cleaning
Dirty
Table 6.4
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