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Sexy, Electric Lubricant

spartonboat1

Legendary Member
Joined
Apr 15, 2005
Messages
2,494
Hatteras Model
43' DOUBLE CABIN (1970 - 1984)
Well, if your sex life is not electric this post is not for you; you'll see why.

At any rate, last fall and the day after a hard run in big seas, I was just sitting at the dock, when I heard a loud "thump". I discovered that the AC sea water lift pump, which had been running, had broken loose from its mounting and in the process the electric motor had broken out of its housing; the thump was the pump jumping up and hitting the adjacent bulkhead.

A strange gooey, gray greasy stuff was everywhere- the bilge, the mounting plate, the outside of the pump, etc. I have since learned that the pump was filled with a "dielectric" liquid lubricant. As most or all of you know, because the lubricant is dielectric, it will not pass electricity, i.e. is an insulator. Which is good because it is constantly circulating in and around the pump motor, while running.

So a electrical insulating lubricant; see limited joke above.

The pump is a Cal Marine Mo. MS1200, 3.3amp, in brass (pump) and stainless (housing can). I contacted them and they were unwilling to provide support for repair, which is just re-assemply and re-lube. But worse would not identify the fluid brand and part # or the volume recommended.

I have since learned that various types of sump pumps are also filled with dielectric lubricant.

Long preamble to ask if any HOF members have any idea about this type of lubricant. Actually, I am just looking for a retail or wholesale source. Oddly, the internet doesn't provide any reference. (aside, but the internet seems to be getting worse on providing answers, but I digress). I have searched good ole Thomas and they don't have any sources.

Next stop- Lowes and some sump pump brands and I will contact the mfg'rs.

If you have a clue, please post.
 
Two places you might ask, when they are open tomorrow: Depco Pump in Florida, and WW Grainger, who are everywhere.

It makes sense that there would be an insulating oil of some kind in there. It makes far less sense that they wouldn't tell you how to replace it. More than likely you'll give the business to someone else when you have to replace it.
 
Related to the above posts, perhaps well water pumps use such a dielectric lubricant???. Power transformers also are sometimes bathed in oil....so the stuff has got to be around....
 

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