ssw03_plus_series
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7 MAINTENANCE<br />
Table 7.3 - Periodical Inspections after the commissioning<br />
COMPONENT PROBLEM CORRECTIVE ACTION<br />
Terminals, connectors<br />
Fans ( 1 )/ cooling System<br />
Printed circuit boards<br />
Loose screws<br />
Loose connectors<br />
Fans are dirt<br />
Abnormal acoustic noise<br />
Abnormal vibration<br />
Dust in the air filter<br />
Dust, oil, moisture<br />
accumulation, etc.<br />
Smell<br />
Tighten them (2).<br />
Clean them.(2)<br />
Replace the fan.<br />
Clean or replace it.(3)<br />
Clean them.(2)<br />
Replace them.<br />
Power Module/<br />
Power Connections<br />
Power Resistors<br />
Dust, oil, moisture<br />
accumulation, etc.<br />
Connection screws are loose<br />
Discoloration<br />
Smell<br />
Clean them.(2)<br />
Tighten them (2).<br />
Replace them.<br />
Note:<br />
(1) We recommend to replace the fans after each 40,000<br />
hours of operation.<br />
(2) Every 6 months.<br />
(3) Twice per month.<br />
94<br />
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