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Re: Running a compressor continuously




From: 	Chip Atkinson[SMTP:chip-at-XiG-dot-com]
Reply To: 	Chip Atkinson
Sent: 	Friday, November 07, 1997 2:26 AM
To: 	Tesla List
Subject: 	Re: Running a compressor continuously

Greetings,

Compressors usually have compressor duty motors, which are not to be
confused with continuous duty.  If you think about the typical duty cycle
of a compressor, they work hard for a while filling up the reservior, and
then stop.  During the off phase, they cool down and return to a safe
operating temp.  

I know from experience that you can burn out the motor of a compressor if
you let it run too long.  This was a big 3-5 hp industrial model too.

Chip


On Thu, 6 Nov 1997, Tesla List wrote:

> 
> From: 	Aric C Rothman[SMTP:Aric_C_Rothman-at-email.whirlpool-dot-com]
> Sent: 	Thursday, November 06, 1997 9:33 AM
> To: 	Tesla List
> Subject: 	Running a compressor continuously
> 
>      I am trying to vacuum desiccate my polyethylene-paper-foil capacitor 
>      with a used piston compressor pump.  I attached a gauge to the vacuum 
>      side and it was pulling 26.5 in. of mercury.  After about 2 hours of 
>      noncontinuous operation, I measured a drop in capacitance from 0.01 uF 
>      to 0.009 uF, which I attribute to dehydration, so things appear to be 
>      on track.  I'd like to know if it is safe to run the compressor 
>      continuously in this state (26.5 in Hg).  After about 1/2 hour, the 
>      compressor gets too hot to lay hands on for more than 5 seconds.  
>      After another 1/2 hour, there is no further noticeable increase in 
>      compressor housing temperature.
>      
>      I just ran about 1/2 qt. of Mobil vacuum oil into the pump.  Can I 
>      leave this thing running all day?  Eight hours?
>      
>      Aric
> 
> 
> 

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Chip Atkinson; Xi Graphics 1801 Broadway, Denver CO 80202
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