[ARC5] Cleaning Capacitor Oil Leakage

[Geoff]

Its amazing how many otherwise intelligent adults get into a knock knee 
panic whenever oil and capacitor are mentioned in the same sentence. And 
without a clue as to what substance is actually involved.

I think Dave has the right idea!




----- Original Message ----- 
From: "Kenneth G. Gordon" <kgordon2006 at frontier.com>
To: "Richard Knoppow" <1oldlens1 at ix.netcom.com>
Cc: <Arc5 at mailman.qth.net>
Sent: Saturday, October 27, 2012 3:46 PM
Subject: Re: [ARC5] Cleaning Capacitor Oil Leakage


> On 27 Oct 2012 at 11:07, Richard Knoppow wrote:
>
>> avoided.  A lot of bathtub type caps are potted with some
>> form of wax. I don't know what exactly the wax was made
>> from. It appears to be a mixture of paraffin wax and resin
>> of some sort. I have not found a sure fire solvent for it.
>
> That which is used in the can-caps is beeswax, period. Beeswax is 
> extremely
> difficult to remove completely. When I rebuild can-caps (or "flower-pots" 
> as
> the Oz-ies call them) I first remove the capacitors, then heat the pot to 
> melt
> as much of the beeswax as possible out of them. Then I use Acetone to get
> as much of the rest of it as I can remove. I have never yet been able to
> remove ALL of it.
>
> The trouble with Acetone is that it also takes off the painted numbers and
> names that are on the outside of the can.
>
> I wish there was something more effective against beeswax, but I have not
> yet found anything better than heat and Acetone.
>
> Ken W7EKB
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