DeLaval timer converter contact points and other Questions?

Anonymous-0 · Mar 22, 2009

How does the timer converter work that controls the polsaiters? It looks like the one I saw on ebay had a rotating cam driven from a motor that activates a set of contact points am I correct? What year did they start this desighn late 50's and early 60's?

rrlund · Mar 22, 2009

I had one of those old pulsation controlers when I first put mine in. It was kind of a piece of crap. We had to replace it with the solid state unit. I don't know just how it worked on the inside,just know it didn't work very well or very long.

Catskill Pete · Mar 22, 2009

You are correct on both counts. The early ones used a set of points on a cam. The best advice I can give you is keep looking for a solid state unit. The points unit could be generously called a piece of junk. I can remember calling the much worse**** Frequently!! I finally abandoned the the magnetic operating system and went to the DV 300s just for the vacum pulsation.

Old Roy · Mar 22, 2009

Those were out dated because the bicyclculating reversible current needed to use a calemomnimeter
that they no longer make.

blinwmiaol.com · Mar 22, 2009

Just curious, how long did you use the DV 300's? I used them for close to 15 years, some with pneumatic pulsators, mostly interpulse, and some with elctric pulsators. They were handy but they seemed to take longer for the cows to milk out. I never realized how slow they were till we started using MilkMasters.

RayP(MI) · Mar 22, 2009

Ours had a bulb of mercury which rotated in conjunction with the vacuum pump - was attached to the end of rotating shaft. Never had any problems with it in the 30 or so years we used it. Vacuum pump was rotating vein design. Just had to keep the oil bottle filled.

Catskill Pete · Mar 23, 2009

I used them about 12 years. I was pretty happy with them, But I never had the oportunity to compare them with anything else. Mostly I was happy to have reliable pulsation. Mine originally had the Delaval pulsators [all pnuematic] but I gradually switched to the Interpulse. I liked the idea of being able to rebuild them myself instead of paying tne dealer an arm and a leg.

olddog · Mar 23, 2009

Greatest thing since sliced bread.... (50 years ago)
I only had the pleasure of working on them in the 80's & 90's. Right out of the chute, those little "single shot 12V pulsators didn't have enough "rest" phase for the pulsation. Then mother nature, together with whitewashing lime, would wear the cam, the points and the around-the-barn connectors till you had 9V and no rest phase at all. Read mastitus, high SCC counts and decresed production.
Depending on your system, what you want to do and your pocketbook, you'd do better with a more modern 24V solid state system or even Interpuls or Stranko pneumatic if you are thinking of milking cows with it.

DeLaval timer converter contact points and other Questions?

Anonymous-0

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rrlund

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Catskill Pete

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Old Roy

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blinwmiaol.com

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RayP(MI)

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Catskill Pete

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olddog

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