testing a vacuum pump

Borrow a small generator? Anything with 220v output should work, the pump can't draw many amps..

mac

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if it works, how much should I pay for it?

owner thinks he can rig a 220 for a test

A transformer to step 110 to 220?

"william kossack" wrote: if it works, how much should I pay for it?

^^^^^^^^^^^^^^^^^^^^^^ Has the owner given an asking price? I have bought vacuum pumps anywhere from $20 to $70.

I can tell you how I got 220 when I needed it, in a building that wsn't wired for it. Generally, there will be 220 (240 really) coming to the fusebox. It is split into two 120 circuits, that usually go to opposite sides of the building. If you plug into both circuits you will have 240 v between them. I ran a welder this way for several years (I know, it ain't legal.)

In message , Leo Lichtman writes

That's a lot cheaper than the ones I used to buy at work, back in the

80's They were about $6000 ran on 240V and took about 10 amps :)

Average price for surplus is $90

the ad said $200 or best offer. I'll try making a much lower offer. Don't know if he would take $70 not if he is asking $200 unless he is really hurting.

PS I'm thinking of using this for vacuum chucking. I've looked at the Gast pumps the big mail order places sell and on paper they look the same as this one. $70-$100 would sure be better than $400+

"william kossack" wrote: the ad said $200 or best offer. I'll try making a much lower offer. (clip) ^^^^^^^^^^^^^^^^ The price range I quoted ($20-70) was because I never bought when I was actually looking for one. $70 was the price of a 3/4 HP Gast pump that showed up at Urban Ore in Berkeley. That's the one I still use. All the others have been passed on to my woodturning friends at cost, so they all did better than I did even though I did the leg work.

If you can get to the main panel, the potential between the contacts on any two adjacent circuit breakers will be 220 v. I'm saying the same thing as Leo, just a little different approach. If you don't know what you are doing, though, I'd skip it.

Bill

Leo Lichtman wrote:

"Bill Rubenstein" wrote: If you can get to the main panel, the potential between the contacts on

^^^^^^^^^^^^^^^^^^^^^^^ I guess that depends on how you define "adjacent." A friend of mine put in a new bandsaw, and got his "220" by connecting to the hot side of two breakers that were side-by-side. Several people, trying to help him, measured the voltage to ground on each line and concluded (incorrectly) that he had power. The motor didn't run because he had it floating at 120v above ground.

Bill, you are right that you can get 220 by going into the box with a pair of jumper cables, but that's best left to people who are nuts AND very careful.

the price he is quoting you is WAY to high for a used untested pump - to prove my point, refer to my web site (wbnoble.com) and you can see what I charge for pumps that are tested and ready to use. I have one 220V dual piston pump that is not listed - I keep forgetting to take a photo - but it is tested and working (and a very nice pump with silencing mounts - very quiet) - that pump would be $70 from me..

that said, when I am buying used pumps, untested, I pay $15 to $25 depending on the pump, rarely a bit more. When I'm selling they are $35 to $300, again depending on the pump - but they are tested when I sell them. The dead ones are a LOT cheaper (ok, want a dead pump for $5 plus shipping? - needs some new ball bearings)

so, if you are going to be paying $70, you can get them tested from me, and maybe from other guys, so don't take a risk at that price.

if you get a price in the proper range, test that the pump turns freely - if so, it is either OK or worst case will need new vanes (for about $60 for a set).

** Posted from **

How much for shipping?

The seller says he can rig a 220 test for me and from the picture it looks like it has a gage on it. The exact model of the pump is Gast

0523 101Q G588DX. I have not been able to find anything on that specific model second hand online.

I'm go> the price he is quoting you is WAY to high for a used untested pump - to

well the seller did not want to come down any from the $200. I got the long email reply to my offer about how he researched vacuum pumps and how well it works etc etc

Th> I'm thinking of buy a used vacuum pump.

big snip -------

I charge somewhere between $10 and $50 for shipping depending on how massive the pump is - if it fits in a flat rate box, it's $10, othwerwise it's whatever FedEx ground (or UPS) charges which depends on weight - the last few pumps I shipped were dual piston ones that fit in flat rate boxes but I've shipped some pretty heavy pumps across the country - I know that's kinda an indirect answer, but .....

I think you did right to walk away from the pump - you should expect to pay NO MORE than 1/2 of new including shipping, for a pump which is known to be in good working condition and will meet your needs - discount the pump appropriately if there are any doubts. If you are patient and look around you can get them as cheaply as I do - of course you take the same risks as I do (maybe more, I've looked at a lot of pumps by now) - good places to look are in discarded copy machines - the bigger the better, and in medical devices like liposuction (eeewww, yuck!) - I get most of mine at swap meets when someone shows up with a big pile of them.

** Posted from **

"william kossack" wrote: (clip) Finances are such that

^^^^^^^^^^^^^^^^^^^^ Please don't spend vendor's asking price for a vacuum chucking setup. You can do it all yourself for a few dollars. The most expensive item will be a double-sealed ball bearing.

Hey William! I cannot see how you could go too wrong with buying one of William Noble's pumps if you are serious about a vac system. They are tested, he knows what size you need and he will ship it to you. And, if it is a dud, you can always bad mouth him here :)

Tom

I've thought about it but other expenses at this time prevent me from spending much that is not necessary. I had to write a big check to the government on the 15th (can't figure out how I can earn less but pay more in taxes)

the seller did not want to move > Hey William! I cannot see how you could go too wrong with buying one of

Your question... mainly because the big tax cuts weren't for you, they were for the friends of the White House, the congressmen, the senators,....

I'll apologize in advance for the above.

Bill

william kossack wrote:

Bill Rubenstein wrote in news:dLrRj.766$ snipped-for-privacy@newssvr21.news.prodigy.net:

Today is May Day. We should all celebrate. Up the prolatariat. Only the rich get tax breaks and the poor get to pay for their excesses. I, for one, am sick and tired of paying for their mansions and mistrisses. If I can't live in a big house and get laid on the side, why should they? The governor of New York and the past president of the USofA are no better than you, so you should not have to pay taxes. What bracket are you in? My guess is not a very large one. So, 'UP THE REVOLUTION', execute anyone richer than us; then get a good job with no taxes.