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  #1  
Old 01-19-2014, 08:49 PM
fifelerchuck fifelerchuck is offline
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sae 300 rpm

I recently bought a sae 300 and have about 150hrs on it and was welding beside a buddy who had a classic 300D and noticed how much louder my machine was compared to his so I am thinking my machine rpm is set higher for some reason I never adjusted anything on the machine it seems to weld ok but I am new to running these type of machines so was wondering how do you check what the rpm on these machines
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  #2  
Old 01-20-2014, 07:40 AM
Huckxc Huckxc is offline
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Re: sae 300 rpm

Turn down your OCV's, I bet they are around 114. Shit ton of info around for turning it down. Let us know how you make out!
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Old 01-20-2014, 08:10 AM
WELDO WELDO is offline
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Re: sae 300 rpm

Does your machine have the same engine? Kubota or Perkins? There can be several reasons why the noise levels are different!
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Old 01-20-2014, 04:22 PM
JJH JJH is offline
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Re: sae 300 rpm

You can idle it down with idle screw a little at a time as you check your ocv's if you have a sae300 you should idle it down to 98 ocv's if it is a newer sae300 HE the ocv's should be 90 make sure the machine has been running for about ten minutes before you do this and that your voltage control reo turned all the way up. You will probably see your ac volts will show between 115&120 when the ocv's are right
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  #5  
Old 01-20-2014, 05:38 PM
fifelerchuck fifelerchuck is offline
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Re: sae 300 rpm

Quote:
Originally Posted by WELDO View Post
Does your machine have the same engine? Kubota or Perkins? There can be several reasons why the noise levels are different!
my sae 300 has the perkins same as my friends classic 300D
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  #6  
Old 01-20-2014, 05:43 PM
fifelerchuck fifelerchuck is offline
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Re: sae 300 rpm

how do I check my ocv's I am new to these type of machines
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  #7  
Old 01-20-2014, 05:46 PM
WELDO WELDO is offline
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Re: sae 300 rpm

OK! Well I wouldnt worry about it! If it does all you want as far as welding goes leave it alone! However checking O.C.V.s @ the outlet on high idel can tell you if your out of spec. IE: RPMs are alittle high!
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  #8  
Old 01-21-2014, 03:01 AM
JJH JJH is offline
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Re: sae 300 rpm

Check ocv's-use volt/ohm meter across your cable terminal stud while machine is as I described in previous post above.
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  #9  
Old 01-21-2014, 03:09 AM
JJH JJH is offline
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Re: sae 300 rpm

90 and 98 are manf. spec's the 98 probably seems high to what everyone is used to however the amp (course current) reo allows you to tailor your arc/volt slope to fix any "high voltage" problem. A good read for this machine is found on web site "mewelding" in the search box type in "constant current welding" read that article over until it is perfectly understood and you will love that SAE
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  #10  
Old 01-22-2014, 08:39 AM
fifelerchuck fifelerchuck is offline
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Re: sae 300 rpm

Well I checked out my ocv's with a multimeter it was around that 101 but I couldn't check it at the terminals because its in the back of my truck and there is too much stuff and cant open the door without taking it off so I checked it at my reels I had the course setting straight up and the fine at 100 plus I checked my 120 AC outlets and it was reading 130 so all this in mind is this telling me to turn my idle down little bit
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