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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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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! |
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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 |
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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. |
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i got it working! any idea where i can get new graphite for the rotor?
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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 |
#9
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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. |
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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. |
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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 |
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