The Sequel - Oh Blimey I bought a CNC Lathe (Beaver TC 20)

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awemawson:
I seem to remember you saying that once before Rod !

So yet again I pulled the Vogel pump off the machine to investigate the pressure switch further. It has a 24 mm hex body, an M10 x 1.00 mm mounting thread and screw terminals, with apparently an adjuster screw between them.

Now it is just possible that the screw terminals were giving the high resistance, but they were nice and tight, and it's just possible that tweaking the adjuster a bit might kick it into life, but having got so far now I want to replace it. Sadly it's not really possible to test it without putting it all back together.

A quick web trawl suggests that they may well be available as a spare - I'll make some phone calls on Monday

awemawson:
Well it seems that pressure switches in this range of pressures are much more common on an 1/8" stem, so this afternoon I knocked up an M10 x 1.0 mm pitch male to 1/8 BSP female adapter - (there is plenty of axial length to accommodate it ) and ordered an 1/8 BSP switch which is due here mid week

Not sure about 1/4" Lucar connectors immersed in oil - I may do better to solder leads directly on - but comments welcome !

Pete.:
No harm from immersing electrical contacts in oil far as I know Andrew. The fuel pump on my bike even had un-insulated connections in the fuel cavity.

mattinker:

--- Quote from: Pete. on October 04, 2020, 09:54:59 AM ---No harm from immersing electrical contacts in oil far as I know Andrew. The fuel pump on my bike even had un-insulated connections in the fuel cavity.

--- End quote ---

I agree with Pete, my K100 has the same sort of connections in the tank! I would have thought that it would be positively advantageous, no corrosion
risk!

Cheers, Matthew

WeldingRod:
Oil immersion is commonly used for high voltage work. Just avoid water in the oil.

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