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vacuum pump

i hope somebody can help me. i bought a doerr pump at a garage sale the

other day. they guy tol dme it had never been used but tis a little old. it has a strange plug almost looks like a 240 volt. but the pump says that its 115v. i know very little about motors! when i connect it

to my outlet with some wires.. it makes a humming noise and starts to heat up. the motor is defineitly not spinning. im pretty sure the pump works, im just doing something wrong. any ideas? the following is on the pump patent:3311293 insul class a 5.4 A 60HZ 1725 rpm 1/4 hp mod no

0522v103c(?)186 single phase mtr ref 50156aa733 fr h487. thanks for your help!
Reply to
dewdrops
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For what purpose? How is the lubrication?

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N
Reply to
NSM

i plan on using it for vacuum distillation. it is a "lube less" pump. it says to clean it out with solvent whil it is running.

Reply to
dewdrops

i got it working! any idea where i can get new graphite for the rotor?

Reply to
dewdrops

rotor?

auto parts store?

they sell it in little tubes for lubing locks

Mark

Reply to
Mark

A pump that hasn't been used for a long time might be stuck. Can you get at the motor to see if it turns freely?

What exactly does the plug look like? Possibly a twist-lock, or are the prongs not at the same orientation as for a normal 3 prong 115 plug?

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Reply to
Sam Goldwasser

Its not that kind of grphite. He needs to replace the graphite vane.

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Former professional electron wrangler.

Michael A. Terrell
Central Florida
Reply to
Michael A. Terrell

Probably from the manufacture of the pump. Its a precision machined part.

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Former professional electron wrangler.

Michael A. Terrell
Central Florida
Reply to
Michael A. Terrell

Check the wiring under the cover, many motors can be wired to 120 or 240v though I've seen a couple that only had one voltage printed on them.

Reply to
James Sweet

Some vacuum pumps - like for medical use - will have induction motors which are happy to run for very long periods. One way to start these is via a capacitor. If that has failed - as it could with age - the motor won't start but simply get hot.

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*Why is the word abbreviation so long?

    Dave Plowman        dave@davenoise.co.uk           London SW
                  To e-mail, change noise into sound.
Reply to
Dave Plowman (News)

Interesting. My first thought for that would have been a venturi pump run off a faucet.

These mechanical pumps I think of for purging refrigeration systems.

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N
Reply to
NSM

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