On Wed, 29 Apr 2015 15:31:09 -0400
Bob Engelhardt wrote:

snip
OK: I put my hand over the intake of the fan, blocking it totally and
the current dropped some, from 7.4 to 5.6A. Still way above the spec'ed
minimum of 2.9. So the problem is not a leak. Meaning it must(?) be
bearings.

I'm going to try to do some cleaning without disassembly. Not Gunner's
total immersion, cause I'll use PB Blaster, some such, and I don't have
a gallon of that.

How do they control the speed? i.e. can you check/get in between the
speed control and the actual motor?

Just wondering if something went bad in the speed control and it's
sinking the extra amperage. Do you have any kind of schematic to work
with that might show any of this?

--
Leon Fisk
Grand Rapids MI/Zone 5b
Remove no.spam for email