Ignoramus30382 wrote:

My coolant pump died today. All points to the run capacitor (there is
no start capacitor). The pump vibrates and overheats, but would not
run.

10 uF, 220v.

The cap is attached to the pump motor by means of a springy bracket.

This is a "sealed capacitor" with no exposed terminals. It is not
like regular caps with push on terminals. There are no exposed
terminals. I can post a picture tomorrow.

I could not find such units at mcmaster or digikey. Are there such
caps sold anywhere at all?

i

Stuck centrifugal switch? Sure the pump didn't suck in a stray chip and
jam up?

On 2010-08-05, Pete C. wrote:

Ignoramus30382 wrote:

My coolant pump died today. All points to the run capacitor (there is
no start capacitor). The pump vibrates and overheats, but would not
run.

10 uF, 220v.

The cap is attached to the pump motor by means of a springy bracket.

This is a "sealed capacitor" with no exposed terminals. It is not
like regular caps with push on terminals. There are no exposed
terminals. I can post a picture tomorrow.

I could not find such units at mcmaster or digikey. Are there such
caps sold anywhere at all?

i

Stuck centrifugal switch? Sure the pump didn't suck in a stray chip and
jam up?

I am not sure. I did not have time yesterday, may look at it today. The
pump has a inlet filter that looks decently enough made to catch
chips.

i

Ignoramus16841 fired this volley in
:

This is a "sealed capacitor" with no exposed terminals. It is not
like regular caps with push on terminals. There are no exposed
terminals. I can post a picture tomorrow.


Um... then how does it connect? Does it have pigtails instead of spade
lugs?

If so... yes, pigtail caps are readily available.

I don't really know what you mean by "sealed", though. All conventional
electrolytics must have some sort of pressure-relief vent ('cept
tantalums... but they're a different breed.)

LLoyd

"Lloyd E. Sponenburgh" wrote:

Ignoramus16841 fired this volley in
:

This is a "sealed capacitor" with no exposed terminals. It is not
like regular caps with push on terminals. There are no exposed
terminals. I can post a picture tomorrow.


Um... then how does it connect? Does it have pigtails instead of spade
lugs?

If so... yes, pigtail caps are readily available.

I don't really know what you mean by "sealed", though. All conventional
electrolytics must have some sort of pressure-relief vent ('cept
tantalums... but they're a different breed.)

LLoyd

Tantalum capacitors are not electrolytics - no electrolyte (and thus no
drying out with age).

"Pete C." fired this volley in news:4c5ac7b0$0$8885
:

Tantalum capacitors are not electrolytics - no electrolyte (and thus no
drying out with age).

Yes, Pete, I know... They still persist in calling them "tantalum
electrolytics" in some circles. That is what I meant by "different breed".

LLoyd

"Lloyd E. Sponenburgh" wrote:

"Pete C." fired this volley in news:4c5ac7b0$0$8885
:

Tantalum capacitors are not electrolytics - no electrolyte (and thus no
drying out with age).

Yes, Pete, I know... They still persist in calling them "tantalum
electrolytics" in some circles. That is what I meant by "different breed".

LLoyd

Sounds like a circle to avoid...

On Aug 5, 10:14*am, "Pete C." wrote:


Tantalum capacitors are not electrolytics - no electrolyte (and thus no
drying out with age).

I think all tantalum caps are considered electrolytics. Don't think
so, just reverse the polarity and wear safety glasses.

Centainly wet slug tantalums are electrolytics.

Dan

" fired this volley in news:6d8d5387-
:

I think all tantalum caps are considered electrolytics. Don't think
so, just reverse the polarity and wear safety glasses.


Heh! Used to do it all the time, for fun! We had "see how many 'tops' you
can embed in the acoustic ceiling tile" competition in the lab.

(yeah, I know... wasteful, youthful activity, but still fun!)

LLoyd

On 2010-08-05, Lloyd E. Sponenburgh lloydspinsidemindspring.com wrote:
Ignoramus16841 fired this volley in
:

This is a "sealed capacitor" with no exposed terminals. It is not
like regular caps with push on terminals. There are no exposed
terminals. I can post a picture tomorrow.


Um... then how does it connect? Does it have pigtails instead of spade
lugs?

If so... yes, pigtail caps are readily available.

I don't really know what you mean by "sealed", though. All conventional
electrolytics must have some sort of pressure-relief vent ('cept
tantalums... but they're a different breed.)

These are run caps, so they are not electrolytic. If you know of a
place to get a pigtail run cap, let me know.

i

Ignoramus16841 wrote:

On 2010-08-05, Lloyd E. Sponenburgh lloydspinsidemindspring.com wrote:
Ignoramus16841 fired this volley in
:

This is a "sealed capacitor" with no exposed terminals. It is not
like regular caps with push on terminals. There are no exposed
terminals. I can post a picture tomorrow.


Um... then how does it connect? Does it have pigtails instead of spade
lugs?

If so... yes, pigtail caps are readily available.

I don't really know what you mean by "sealed", though. All conventional
electrolytics must have some sort of pressure-relief vent ('cept
tantalums... but they're a different breed.)

These are run caps, so they are not electrolytic. If you know of a
place to get a pigtail run cap, let me know.

i

I expect most any electrical or HVAC supply place will have suitable
caps.

"Pete C." fired this volley in
ter.com:


These are run caps, so they are not electrolytic. If you know of a
place to get a pigtail run cap, let me know.

i

I expect most any electrical or HVAC supply place will have suitable
caps.

Ig... what is the nature of the connections? Is it opposite-ends
(axial), single-end (radial), single pigtail on one end with a bolt on
the other end, one axial pigtail with the case clamp as the other
connection? (wouldn't expect one of the last two on a motor, but you
never know)

And last -- if it is an axial with two leads, why couldn't you make up
your own pigtails for a quick-disconnect type?

There are lots of oil-filled film caps out there in several package
styles.

LLoyd

Lloyd E. Sponenburgh wrote:

I don't really know what you mean by "sealed", though. All conventional
electrolytics must have some sort of pressure-relief vent ('cept
tantalums... but they're a different breed.)
This is a RUN cap, oil-filled paper, not an electrolytic.

Jon

Jon Elson fired this volley in news:mISdnf9vYL-
:

This is a RUN cap, oil-filled paper, not an electrolytic.


Yes, Jon. That, also, was dealt with far (far!) earlier in the thread.

LLoyd