Old pumps

[nas]

I got a couple of old vacuum pumps with the used evaporator I bought. I was wondering how much vacuum I could expect to get from them, and how many taps I could run on each. Is there anything I should know about them before I try to start them up. They haven't been used in several years, and they were stored outside.
http://i290.photobucket.com/albums/ll244/milburough/Maple%20sugar%20stuff/IMG00123-20101128-1507.jpg
http://i290.photobucket.com/albums/ll244/milburough/Maple%20sugar%20stuff/IMG00125-20101128-1509.jpg

Thanks,
Nick

[jasonl6]

The top one looks like my delaval 25, maybe it's a 30. I was told around 125-150 taps on a tight system. I think they are around 5cfm. You will want an oil reclaimer on it though to keep it cool. They are both rotary vain pump. Have you found any model numbers on them you can post?

Jasn

[Haynes Forest Products]

If it turns freely then dump some oil in the intake and start it up. I would realign the belt but hey it may stay on...........let er rip

[Dennis H.]

The bottom one is a delaval 73. it says right there on the plate.:D
For what I understand they no longer make replacement parts for it so be sure to take care of it and make sure there is oil in it.
It is a nice little pump I have 2 of them and work really good with only a 1hp motor.

[Haynes Forest Products]

I have one of them under the bench that is all cleaned up ready for gaskets....now all I need are gaskets:rolleyes: I guess I need some paper and a ball pein

[nas]

The top one is a model 40-41. Here is the plate on it. What kind of oil do I put in them? What is an oil reclaimer? As you can tell, I know nothing about vacuum pumps.
http://i290.photobucket.com/albums/ll244/milburough/Maple%20sugar%20stuff/IMG00124-20101128-1508.jpg

Nick

[Dennis H.]

On a vane pump or even a piston pump for that matter you will get oil out the exhaust of the pump after it has been running for awhile. with the pump running hot the oil vaporizes and blows out the exhaust.
Not very friendly for the enviroment. So that is where the oil reclaimer comes in to play.
On a vane pump like the ones you got there you can "flood" them with oil and then catch the excess oil with the reclaimer. The reclaimer also acts as a radiator getting rid of the heat out of the oil. That is why you "flood" a pump.
Flooding is basically feed way more oil into the inlet of the pump then what is needed to lubricate the pump normally and then using the extra oil to take heat out of the pump thru the exahust and catching it in the oil reclaimer. Then the oil that is caught in the reclaimer is refeed back into the pump.

Clear as mud right!

[nas]

Thanks, that makes sense. Does anyone have a picture or source for a reclaimer?

Nick

[Haynes Forest Products]

You can buy them and you can make them. You can look coalescing oil reclaimers thats what you need. I have a store bought and will be making a new one out of a Radiator. It was suggested on this site about a year ago. Im thinking of having the discharge air leave the pump and enter the radiator thru the top fitting. That way the oil/air mix will cool and condence in the small passages. Then I will extend the lower fitting upward so the exhaust goes up and out. I will use the drain petcock as a oil return to the pump. Im struggling with the idea that the oil mayget pushed out the bottom fitting if to much oil is in the system.

[markct]

im realy liking this radiator idea, sounds so simple indeed! if my 1.5 hp gast dry vane isnt enough to run all my taps this year i may setup something like that for my little montgomery wards dairy pump that i used last year, and just filled with oil daily and made a mess all over!

[nas]

Still want to know what kind of oil to use in them?

Nick

[NH Maplemaker]

How about if you mounted a 12 volt radiator fan on the radiator to help cool the oil? Then if you were cooling the hot oil with a fan, why couldn't you enter the radiator from the bottom and vent the exhaustthe out the top hole? Jim L.

[NH Maplemaker]

Yes I know ! Oil would run back down into the pump! Sorry.Jim L.

nas, Vacuum pump oil from tractor supply.

[Haynes Forest Products]

NH Maplemaker I have toyed with the idea of exhausting into the bottom but I want the oil to pool in the bottom so it can get sucked back into the pump from the drain petcock. Most radiators have the ports oposite from each other so its hard to have both on top even setting it on its side. I did see a nice one in a cop car with duel elec fans on it but I was out looking for other parts:cry:

[Dennis H.]

I use automatic tranny fluid, Mercon/Dextron.

Some I hear use SAE30.

Some I hear use a special blend of oils along with an oil additive. But I stick with my Mercon/Dextron.