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!

wrote in message
oups.com...
i hope somebody can help me. i bought a doerr pump at a garage sale the
other day.

For what purpose? How is the lubrication?
--
N

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.

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

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

auto parts store?

they sell it in little tubes for lubing locks

Mark

writes:

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!

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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Mark wrote:

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

auto parts store?

they sell it in little tubes for lubing locks

Mark

Its not that kind of grphite. He needs to replace the graphite vane.
--
Former professional electron wrangler.

Michael A. Terrell
Central Florida

wrote in message
oups.com...
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!


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.

In article .com,
wrote:
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?

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.

--
*Why is the word abbreviation so long?

Dave Plowman London SW
To e-mail, change noise into sound.

wrote in message
oups.com...
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.

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.
--
N