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Thread: Capacitors! Yikes!
07-27-2012, 12:54 PM #27
Same problem here. I really think the heat is the main culprit. I'm about ready to put the capacitor inside the house and run wires outside.
I agree that the Chinese ones seem to get whipped faster. But I'm replacing plenty of the non-Chinese ones too.
But it seems kinda foolish to replace a dead non-Chinese one with a new Chinese one.
07-27-2012, 02:06 PM #28
I was turning over my capacitor inventory so fast, I didn't even bother restocking my bins, I just had a big box-o-capacitors on the floor of my truck.
I did a lot of parallel capacitor wiring due to supplier shortages around here.
This summer some of the suppliers bulked up their stock by a huge amount, but with the more normal 100º high temperatures we are getting this year, we are not going through nearly as many capacitors.If more government is the answer, then it's a really stupid question.
07-27-2012, 04:16 PM #29
07-27-2012, 06:12 PM #30
07-27-2012, 06:15 PM #31
I actually witnessed one go out on limit (when the top bulges out) live. It was impressive.
Upon my initial inspection. I noticed someone replaced fan mtr so it had a seperate cap.
And the compressor was on the 5 mfd side of existing run cap. So I shut unit off and put compressor start on herm terminal.
It started and ran for a couple minutes. Then top just "popped " up like popcorn.
Compressor kept running though. And would have kept going if conditions weren't extreme.
Same as when units have hard starts sometimes compressor keeps running and they may not know for awhile anything is wrong. Which cant be good for compressor.
07-27-2012, 06:17 PM #32
It would be interesting to mark capacitors with several temperature crayons so you can observe how hot they get.
Has anyone tried zip tying to the suction line to let the refrigerant pick up the heat?
Another option is to put it mod the case a bit, so the air flows over the capacitor when the fan is running.
07-27-2012, 06:41 PM #33
The only fact I can attest to is that last year was much harder on capacitors than this year.
07-27-2012, 07:07 PM #34
07-27-2012, 07:38 PM #35
Um do you really want to have electrical devices tied onto your refrig lines? I spose a short would cool it off in a big hurry with liquid refrigerant bathing the thing.
07-27-2012, 07:38 PM #36Professional Member*
- Join Date
- Jan 2012
I'm saying the heat, power loss?? nooo when that dude is under a load at the hottest part of the day 100+ outside it says yep I've had enough ( POP ) I bet that cap would burn you if you touched it
07-27-2012, 07:47 PM #37
07-27-2012, 08:11 PM #38
I see the Caps lasting about 5 or 6 years. I normally keep about 50 on the truck. This week I haven't replaced a single one. I've had air-flow problems at almost every call this week. I guess caps next.
Here's a blown one from last week.Yes, I know I Shouldn't But I Just Can't Help Myself...
07-27-2012, 09:39 PM #39Professional Member
- Join Date
- Jun 2003
- New Hampshire
I read somewhere that if you gang up caps if you don't have the right size to get the correct capacitance then you are actually better off because of more surface area to dissipate the heat.
But there never seems to be enough room in the smaller condensers.