Home |
Search |
Today's Posts |
|
Home Repair (alt.home.repair) For all homeowners and DIYers with many experienced tradesmen. Solve your toughest home fix-it problems. |
Reply |
|
LinkBack | Thread Tools | Display Modes |
#1
Posted to alt.home.repair
|
|||
|
|||
Electric motor struggles to start up
Hi,
Is there anything I can do to get the electric motor for my favorite desktop fan to start up properly again? When I turn on the fan, the motor axle/propeller try to rotate (while the motor hums), but if they do, it's usually only very slowly and for just a few moments before they stall completely. However, I can usually get the propeller rotating steadily at full speed by quickly rotating it by hand several times right after I switch on the fan. Thanks in advance for your replies, Darro |
#2
Posted to alt.home.repair
|
|||
|
|||
Electric motor struggles to start up
On Wed, 19 May 2010 07:59:03 -0700, Darro wrote:
Hi, Is there anything I can do to get the electric motor for my favorite desktop fan to start up properly again? how are the bearings? Does it turn freely? use sewing machine oil for lubrication. use wd40 if you want to ruin it. are the brushes and commutator visible? signs of wear? If it's a cheap POS, you should just replace it. |
#3
Posted to alt.home.repair
|
|||
|
|||
Electric motor struggles to start up
On May 19, 9:59*am, Darro wrote:
Hi, Is there anything I can do to get the electric motor for my favorite desktop fan to start up properly again? When I turn on the fan, the motor axle/propeller try to rotate (while the motor hums), but if they do, it's usually only very slowly and for just a few moments before they stall completely. However, I can usually get the propeller rotating steadily at full speed by quickly rotating it by hand several times right after I switch on the fan. snip The bearings have gone dry and are starting to seize. The fan may revive and work for time if you manage to lube the bearings with a light machine oil. There are usually no provisions for oiling bearings on typical low cost fans like this, so plan on an early replacement. Some oil may work into the bearings if you place a few drops on the shaft while it is vertical. Others have drilled small holes in the rear bering housing to add oil. Good luck. Joe |
#4
Posted to alt.home.repair
|
|||
|
|||
Electric motor struggles to start up
In ,
Darro typed: Hi, Is there anything I can do to get the electric motor for my favorite desktop fan to start up properly again? When I turn on the fan, the motor axle/propeller try to rotate (while the motor hums), but if they do, it's usually only very slowly and for just a few moments before they stall completely. However, I can usually get the propeller rotating steadily at full speed by quickly rotating it by hand several times right after I switch on the fan. Thanks in advance for your replies, Darro I usually manage to get a few more year's life out of such fans by taking the blades off and laying it down on the bench horizontally. That's assuming there are no oil ports, of course. Use WD-40 squirted around the shaft so it'll drip down into the bearing area. Run the fan for a few minutes. Repeat. Turn the fan other side up and repeat the above. The rotor should spin freely when you're done. If not, repeat the process, perhaps letting a puddle of WD-40 laying around the rotor and let it soak in overnight. Another night for the other side. Then repeat the initial steps, both sides. When the rotor will spin freely, next apply a thin oil like sewing machine oil or 3-in-1 oil to the bearings same as you did with the WD-40. You have to do this because WD40 is NOT an oil; it temporarily sort of lubricates, but it also evaporates and you soon have dry bearings again. If the oxidation is minor, and it likely is, this might get you quite a bit more use out of it. When you're satisfied you got the oil into the bearings on both ends of the motor, reassemble and enjoy. Oh, and store sensibly when not in use. HTH, Twayne` |
#5
Posted to alt.home.repair
|
|||
|
|||
Electric motor struggles to start up
On Wed, 19 May 2010 07:59:03 -0700, Darro
wrote: Hi, Is there anything I can do to get the electric motor for my favorite desktop fan to start up properly again? When I turn on the fan, the motor axle/propeller try to rotate (while the motor hums), but if they do, it's usually only very slowly and for just a few moments before they stall completely. However, I can usually get the propeller rotating steadily at full speed by quickly rotating it by hand several times right after I switch on the fan. Thanks in advance for your replies, Darro Try blowing out the motor with a can of air. Perhaps there is dust/lint, etc. in the housing. |
#6
Posted to alt.home.repair
|
|||
|
|||
Electric motor struggles to start up
I've found to dissemble, clean (brake cleaner spray works nicely).
Relube with zoom spout turbine oil. Oils such as sewing machine, three in one, or WD-40 tend to dry up and stop working in a few weeks or months. -- Christopher A. Young Learn more about Jesus www.lds.org .. "AZ Nomad" wrote in message ... how are the bearings? Does it turn freely? use sewing machine oil for lubrication. use wd40 if you want to ruin it. are the brushes and commutator visible? signs of wear? If it's a cheap POS, you should just replace it. |
#7
Posted to alt.home.repair
|
|||
|
|||
Electric motor struggles to start up
Hmm. One more vote for sewing machine oil. How long does that last,
for you? -- Christopher A. Young Learn more about Jesus www.lds.org .. "Twayne" wrote in message ... I usually manage to get a few more year's life out of such fans by taking the blades off and laying it down on the bench horizontally. That's assuming there are no oil ports, of course. Use WD-40 squirted around the shaft so it'll drip down into the bearing area. Run the fan for a few minutes. Repeat. Turn the fan other side up and repeat the above. The rotor should spin freely when you're done. If not, repeat the process, perhaps letting a puddle of WD-40 laying around the rotor and let it soak in overnight. Another night for the other side. Then repeat the initial steps, both sides. When the rotor will spin freely, next apply a thin oil like sewing machine oil or 3-in-1 oil to the bearings same as you did with the WD-40. You have to do this because WD40 is NOT an oil; it temporarily sort of lubricates, but it also evaporates and you soon have dry bearings again. If the oxidation is minor, and it likely is, this might get you quite a bit more use out of it. When you're satisfied you got the oil into the bearings on both ends of the motor, reassemble and enjoy. Oh, and store sensibly when not in use. HTH, Twayne` |
#8
Posted to alt.home.repair
|
|||
|
|||
Electric motor struggles to start up
On Wed, 19 May 2010 10:05:40 -0500, AZ Nomad
wrote: On Wed, 19 May 2010 07:59:03 -0700, Darro wrote: Hi, Is there anything I can do to get the electric motor for my favorite desktop fan to start up properly again? how are the bearings? Does it turn freely? use sewing machine oil for lubrication. use wd40 if you want to ruin it. are the brushes and commutator visible? signs of wear? If it's a cheap POS, you should just replace it. 99.9999% sure it has no commutator or brushes. Because about 99.99999% of fans don't (except blower motors in automotive heating and airconditioning systems - which are technically blowers, not fans.) |
#9
Posted to alt.home.repair
|
|||
|
|||
Electric motor struggles to start up
|
#10
Posted to alt.home.repair
|
|||
|
|||
Electric motor struggles to start up
On Wed, 19 May 2010 16:37:53 -0400, Stormin Mormon wrote:
Hmm. One more vote for sewing machine oil. How long does that last, for you? Well, depends on duty cycle... somewhere around a year IME, though. Buys you time to source a replacement, but that's pretty much it. cheers Jules |
#12
Posted to alt.home.repair
|
|||
|
|||
Electric motor struggles to start up
On 5/20/2010 5:36 AM Jules Richardson spake thus:
On Wed, 19 May 2010 16:37:53 -0400, Stormin Mormon wrote: Hmm. One more vote for sewing machine oil. How long does that last, for you? Well, depends on duty cycle... somewhere around a year IME, though. Buys you time to source a replacement, but that's pretty much it. Why replacement? If it starts slowing down again, just shoot some more oil in them bearings. My guess is it'll last a lot longer than the nay-sayers here say it will. I've done this many times--rescue sluggish motors by lubricating them--and usually they for for *years* before needing attention. -- The fashion in killing has an insouciant, flirty style this spring, with the flaunting of well-defined muscle, wrapped in flags. - Comment from an article on Antiwar.com (http://antiwar.com) |
#13
Posted to alt.home.repair
|
|||
|
|||
Electric motor struggles to start up
On Wed, 19 May 2010 22:31:13 -0400, Tony
wrote: wrote: On Wed, 19 May 2010 10:05:40 -0500, AZ Nomad wrote: On Wed, 19 May 2010 07:59:03 -0700, Darro wrote: Hi, Is there anything I can do to get the electric motor for my favorite desktop fan to start up properly again? how are the bearings? Does it turn freely? use sewing machine oil for lubrication. use wd40 if you want to ruin it. are the brushes and commutator visible? signs of wear? If it's a cheap POS, you should just replace it. 99.9999% sure it has no commutator or brushes. Because about 99.99999% of fans don't (except blower motors in automotive heating and airconditioning systems - which are technically blowers, not fans.) If automobiles had an AC system instead of DC, then they too would have no commutator or brushes. But they don't. So they do. And a great number of "DC" motors don't have brushes either. But they are on higher end equipment than car blower fans. |
#14
Posted to alt.home.repair
|
|||
|
|||
Electric motor struggles to start up
On Thu, 20 May 2010 12:36:02 +0000 (UTC), Jules Richardson
wrote: On Wed, 19 May 2010 16:37:53 -0400, Stormin Mormon wrote: Hmm. One more vote for sewing machine oil. How long does that last, for you? Well, depends on duty cycle... somewhere around a year IME, though. Buys you time to source a replacement, but that's pretty much it. cheers Jules The 1958 SeaBreeze fan I "resurrected" about 6 years ago with SM oil is still going strong. |
#15
Posted to alt.home.repair
|
|||
|
|||
Electric motor struggles to start up
David Nebenzahl wrote:
On 5/19/2010 7:31 PM Tony spake thus: wrote: On Wed, 19 May 2010 10:05:40 -0500, AZ Nomad wrote: On Wed, 19 May 2010 07:59:03 -0700, Darro wrote: Is there anything I can do to get the electric motor for my favorite desktop fan to start up properly again? how are the bearings? Does it turn freely? use sewing machine oil for lubrication. use wd40 if you want to ruin it. are the brushes and commutator visible? signs of wear? If it's a cheap POS, you should just replace it. 99.9999% sure it has no commutator or brushes. Because about 99.99999% of fans don't (except blower motors in automotive heating and airconditioning systems - which are technically blowers, not fans.) If automobiles had an AC system instead of DC, then they too would have no commutator or brushes. But they don't. So they do. Where do you get "automobiles" from any of this? The other person said *except* automotive heating & AC. OP described the motor as belonging to a "desktop" fan. Therefore a common garden-variety induction motor, therefore no brushes. Sheesh. Sheesh yourself, what is the big deal? I was commenting on why the blower fans in autos have brushes. |
#16
Posted to alt.home.repair
|
|||
|
|||
Electric motor struggles to start up
wrote:
On Wed, 19 May 2010 22:31:13 -0400, Tony wrote: wrote: On Wed, 19 May 2010 10:05:40 -0500, AZ Nomad wrote: On Wed, 19 May 2010 07:59:03 -0700, Darro wrote: Hi, Is there anything I can do to get the electric motor for my favorite desktop fan to start up properly again? how are the bearings? Does it turn freely? use sewing machine oil for lubrication. use wd40 if you want to ruin it. are the brushes and commutator visible? signs of wear? If it's a cheap POS, you should just replace it. 99.9999% sure it has no commutator or brushes. Because about 99.99999% of fans don't (except blower motors in automotive heating and airconditioning systems - which are technically blowers, not fans.) If automobiles had an AC system instead of DC, then they too would have no commutator or brushes. But they don't. So they do. And a great number of "DC" motors don't have brushes either. But they are on higher end equipment than car blower fans. Yes, I have a few in my PC! |
#17
Posted to alt.home.repair
|
|||
|
|||
Electric motor struggles to start up
On 5/20/2010 4:08 PM Tony spake thus:
David Nebenzahl wrote: On 5/19/2010 7:31 PM Tony spake thus: wrote: On Wed, 19 May 2010 10:05:40 -0500, AZ Nomad wrote: On Wed, 19 May 2010 07:59:03 -0700, Darro wrote: Is there anything I can do to get the electric motor for my favorite desktop fan to start up properly again? how are the bearings? Does it turn freely? use sewing machine oil for lubrication. use wd40 if you want to ruin it. are the brushes and commutator visible? signs of wear? If it's a cheap POS, you should just replace it. 99.9999% sure it has no commutator or brushes. Because about 99.99999% of fans don't (except blower motors in automotive heating and airconditioning systems - which are technically blowers, not fans.) If automobiles had an AC system instead of DC, then they too would have no commutator or brushes. But they don't. So they do. Where do you get "automobiles" from any of this? The other person said *except* automotive heating & AC. OP described the motor as belonging to a "desktop" fan. Therefore a common garden-variety induction motor, therefore no brushes. Sheesh. Sheesh yourself, what is the big deal? I was commenting on why the blower fans in autos have brushes. OK; I guess my trigger's been set pretty low lately, as there seems to be more than the usual Usenet bull**** flying around. -- The fashion in killing has an insouciant, flirty style this spring, with the flaunting of well-defined muscle, wrapped in flags. - Comment from an article on Antiwar.com (http://antiwar.com) |
#18
Posted to alt.home.repair
|
|||
|
|||
Electric motor struggles to start up
Darro wrote:
Hi, Is there anything I can do to get the electric motor for my favorite desktop fan to start up properly again? When I turn on the fan, the motor axle/propeller try to rotate (while the motor hums), but if they do, it's usually only very slowly and for just a few moments before they stall completely. However, I can usually get the propeller rotating steadily at full speed by quickly rotating it by hand several times right after I switch on the fan. Thanks in advance for your replies, Darro About this time off the year I take most of my fans apart, then clean and oil the shafts. I have a couple of fans that are over 25 years old still going strong. A few of them are the small cheap clip on ones. |
#19
Posted to alt.home.repair
|
|||
|
|||
Electric motor struggles to start up
David Nebenzahl wrote:
On 5/20/2010 4:08 PM Tony spake thus: David Nebenzahl wrote: On 5/19/2010 7:31 PM Tony spake thus: wrote: On Wed, 19 May 2010 10:05:40 -0500, AZ Nomad wrote: On Wed, 19 May 2010 07:59:03 -0700, Darro wrote: Is there anything I can do to get the electric motor for my favorite desktop fan to start up properly again? how are the bearings? Does it turn freely? use sewing machine oil for lubrication. use wd40 if you want to ruin it. are the brushes and commutator visible? signs of wear? If it's a cheap POS, you should just replace it. 99.9999% sure it has no commutator or brushes. Because about 99.99999% of fans don't (except blower motors in automotive heating and airconditioning systems - which are technically blowers, not fans.) If automobiles had an AC system instead of DC, then they too would have no commutator or brushes. But they don't. So they do. Where do you get "automobiles" from any of this? The other person said *except* automotive heating & AC. OP described the motor as belonging to a "desktop" fan. Therefore a common garden-variety induction motor, therefore no brushes. Sheesh. Sheesh yourself, what is the big deal? I was commenting on why the blower fans in autos have brushes. OK; I guess my trigger's been set pretty low lately, as there seems to be more than the usual Usenet bull**** flying around. I'll get over it. OK, I'm over it. |
#20
Posted to alt.home.repair
|
|||
|
|||
Electric motor struggles to start up
On Wed, 19 May 2010 07:59:03 -0700, Darro
wrote: Hi, Is there anything I can do to get the electric motor for my favorite desktop fan to start up properly again? When I turn on the fan, the motor axle/propeller try to rotate (while the motor hums), but if they do, it's usually only very slowly and for just a few moments before they stall completely. However, I can usually get the propeller rotating steadily at full speed by quickly rotating it by hand several times right after I switch on the fan. Thanks in advance for your replies, Darro Just an update to my inquiry.... After lubricating the motor shaft with sewing machine oil, my favorite fan works perfectly again. I intend to do this every so often to keep it running for as long as possible. A big thank-you to everyone who took the time to help me get my fan going again. Cheers, Darro |
Reply |
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Forum | |||
Soft-Start for 1400W electric motor | UK diy | |||
Motor start cap | UK diy | |||
What type of AC motor have I got? capacitor start motor? | Home Repair | |||
Motor won't start | Woodturning | |||
Kenmore dryer 2002 Push to start will start motor but will not stay on. | Home Repair |