We have a standard Sears in-duct air cleaner with two slide-in
I installed it and have mainainted it for many years. Heard a
continous arcing one day. All the plates and wires are intact and the
unit was cleaned with a pressure washer and allowed to dry.
I get continuous arcing from the element frame to the metal rail that
it rests on.
The same element exhibits the same problem independent of front or
Upon close examination, one of the white insulators looked
"burned" ...I broke it apart and note what looks like a black carbon
I was expecting a solid white nylon insulator.
The removed insulator did not impact the mechanical integrity of the
unit, so now there is a finite air gap there. The unit still arcs.
An electronics guru told me that over time, these insulators
Anyone ever hear of such a thing?
They are not replaceable parts, but I could probably disassemble the
element and substitute nylon "insulators".
Any advice other than chucking the entire unit??
Stew Corman from sunny Endicott