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Tools & Supplies: Compressors
Talk about compressors.
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my compressor
PanzerKarl
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Posted: Saturday, March 07, 2015 - 11:49 AM UTC
Just bought myself a new compressor and after about 20 minutes or so it gets quite warm and starts to give off an oily smell,is this normal with this type of compressor?


Thanks
Karl
ejhammer
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Posted: Saturday, March 07, 2015 - 07:21 PM UTC
I would say yes. I have owned 20 or more compressors over the years of all types.
First, the act of compressing a gas (air) creates heat. That's why the compressor head has fins on it - to dissipate that heat. Any electric motor running also creates heat, again usually dissipated by fins or an internal fan to cool the windings, (the little slots in the cover of the motor).
The smell comes from the off gassing of oils, lubricants and coatings used in the production of the compressor and motor. This will cease to be an issue after a while, kinda like when the heater in your car or a new toaster is fired up the first few times.
Enjoy your new compressor.

EJ
CMOT
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ARMORAMA
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Posted: Saturday, March 07, 2015 - 07:28 PM UTC
I have a compressor that looks exactly the same as this one. It does get warm during heavy use but I have not noticed an oily smell being given off. If this is the same compressor as I have it has done stirling service for 6 years now and required no work to be done to it.
PanzerKarl
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Posted: Saturday, March 07, 2015 - 10:17 PM UTC
Thanks for your replies.
I found a little mod that I am going to do,I have ordered an 8cm CPU fan from ebay for 1.79 and some 9v batteries and attach it to the back of the compressor,should keep it a lot cooler.


Ill post some pictures up once I have done it.

Regards
Karl
edmund
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Posted: Monday, March 09, 2015 - 05:37 PM UTC
Maybe it would be better if get one of those small 12 volt power supplies , the one you plug into the wall , it would be easier to wire up the fan than to keep buying batteries . Or maybe look for a line voltage fan , is it 220 v AC ?
PanzerKarl
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Posted: Monday, March 09, 2015 - 08:58 PM UTC
I fix the fan to the compressor and it works ok.done about half hour painting last night and it was not as hot as it was.





Karl
Alystyr
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Posted: Monday, March 09, 2015 - 09:51 PM UTC
Really creative mod!
I second Edmund's comment about getting a 12V power supply. Since PC fans like that one you used normally run at 12V anyways, it should be perfect and not affect the life of the fan at all. You could probably find one really cheap at a thrift store, but even new they don't cost all that much.
pseudorealityx
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Posted: Monday, March 09, 2015 - 11:47 PM UTC
I'm not sure how you've arranged the fan, but it should be pulling air OUT of the motor, not blowing into the motor. It'll be more efficient that way.
PanzerKarl
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Posted: Tuesday, March 10, 2015 - 12:42 AM UTC

Quoted Text

I'm not sure how you've arranged the fan, but it should be pulling air OUT of the motor, not blowing into the motor. It'll be more efficient that way.



The fan is blowing air in to keep the motor cooler.
edmund
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Posted: Tuesday, March 10, 2015 - 12:55 AM UTC
Have you considered a compressor with a tank , that way when the tank is full the compressor will stop , this one you got it keeps on running when you pause airbrushing ?
pseudorealityx
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Posted: Tuesday, March 10, 2015 - 01:00 AM UTC

Quoted Text


Quoted Text

I'm not sure how you've arranged the fan, but it should be pulling air OUT of the motor, not blowing into the motor. It'll be more efficient that way.



The fan is blowing air in to keep the motor cooler.



Based on the photo at the top of the thread, there's some small vents at the bottom of the compressor. You want to pull the air through those vents, through the coil/windings and then out with the fan.

Flip your fan around and it'll work better.
CMOT
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ARMORAMA
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Posted: Tuesday, March 10, 2015 - 01:02 AM UTC
As I believe I have the same compressor the answer is no, it shuts down except when you are spraying. I got a large bore airline which works as a tank for a small amount of air.
PanzerKarl
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Posted: Tuesday, March 10, 2015 - 01:54 AM UTC

Quoted Text

Based on the photo at the top of the thread, there's some small vents at the bottom of the compressor. You want to pull the air through those vents, through the coil/windings and then out with the fan.

Flip your fan around and it'll work better.



Jesse that part at the top has no vents its just a solid piece of metal.
CMOT
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Posted: Tuesday, March 10, 2015 - 02:07 AM UTC
Karl he means the slots on the bottom of the motor body.
Alystyr
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Posted: Tuesday, March 10, 2015 - 02:16 AM UTC

Quoted Text

I'm not sure how you've arranged the fan, but it should be pulling air OUT of the motor, not blowing into the motor. It'll be more efficient that way.


Possibly true.
The fan should be set so that it works with the original flow of air, however that is, instead of against it.
Say, if the compressor draws in through the bottom vents, then the fan should pull air through (label out, if the polarity's correct) the motor.
If it's set wrong, it really won't hurt anything. It just won't be nearly as efficient.