Cooling fans and dust

mcgivormcgivor Registered Users Posts: 1,208 ✭✭✭✭
In the past, one aspect of my job, was the maintenance of about 150 Danfoss frequency drives which have cooling fans, they had external replaceable air filters. Some charge controllers and inverters which employ cooling fans run often, ingesting airborne dust and pollen etcetera, in the case of my inverter charger, the fans run almost constantly, tropical climate, within a few weeks there was a fine brown coat of dust in the intake grill. My solution was to use automotive air conditioning cabin filters over the intakes, was curious what other ideas may be employed, this dust can't be good for the electronics. 
  1500W, 6× Schutten 250W Poly panels , Schneider 150 60 CC, Schneider SW 2524 inverter, 8×T105 GC 24V nominal 

Comments

  • mike95490mike95490 Solar Expert Posts: 7,249 ✭✭✭✭
    As long as you realize the filters restrict the airflow a bit, and you need larger filters (2x ?) than your fan grills. Should help.
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  • Dave AngeliniDave Angelini Solar Expert Posts: 3,258 ✭✭✭✭
    The CSW you have just coats everything. The XW takes a different approach and has a tunnel that has only heat sinks inside and no components. The tunnel runs vertically to convection cool if the fans died. That was the requirement to make it last 10 years in the deserts of ?. 
    "we go where power lines don't" Sierra Mountains near Mariposa/Yosemite CA
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