Who here has thermaled your 3404 ?

P

pingable

New member
See alot of regulars have the 3403 - Sbee, Gmblack, etc.



Just got around to using my 3403 yesterday. Using a light polishing pad and 106, the damm thing was going thermal by the time I was done on 1/2 a panel. I couldn't even do the hood without it going thermal on me 2X.



Suffice to say, it was a very aggravating day as I was not home --- and would have easily grabbed another roto to use.



For you fellas with 3403, have you guys experiences similar issues or moreso ?

It was fine with the UF/blue mmm 6: pad as well, but during polishing, it got hot way too quickly.
 
I think that flex recommends no larger then a 6" pad with the 3403.



Happens to me with SIP and a 7.5" curved CCS orange pad on the 3403. That is why I have two 3403s and a hitachi. They all come with me on each job. With the same SIP/orange CCS combo, I can get the metabo to shutdown quicker then the 3403. At least this was my experience on a 07 black AMG.



SIP/106 will sometimes "bind up" on softer clears.



Yes I like the 3403 enough to put up with this issue.
 
I have run this polisher on 6 inch pads for hours...never reached shutdown point. FWIW.:think:



And I love my 3403!!



IB
 
are you running an extension cord to the flex....if so it needs to be a heavy duty one since the flex does draw some power......I use a contractor grade cord of 12Ga and that keeps both the rotary and flex cool....





Now if you run a large pad on it like a 7.5 that will create more surface resistance and cause the motor to draw more to run it..causing heat...its made to run a 6 inch pad



these are just shots in the dark but may help if you have these conditions....



I ran the flex last week for 5 hours...and it was very cool running....



AL
 
How does power equate to thermal... dunno how many EE engineers are in here.

Depending on distance, is how I use my extension cords. Whether it be a 10 or 12 from the main, BUT, I always tend to use a 14awg 15 foot between whatever polisher I'm using and the main cord, as the 14awg is much more lighter and flexible than 12gauge. All my power cords are across the board softer than SJEO cords already...as well, but I do tend to like a lighter gauge when I get closer to the machine at hand....
 
NEVER use larger pads then 6" on the Flex 3403 rotary. Myself, I perefere smaller pads like 5-6" when compounding, feels that I have much more control over those pads then the larger 7-9" pads.
 
when dealing with power and resistance, the more resistance the MORE power will be drawn because more power or "umph" if you will is needed to move X" pad at a constant rotation/speed, thus equating to more heat, more heat is a BAD thing with anything electronic. Heat is the #1 enemy in all things electronic/electric in nature.



Using 10awg and 12awg cords should be a minimum when using somethign that draws 8 to 10 amps with NO LOAD at max RPM. Apply pressure to that rotary and you instantly will cause more amps to be drawn to keep the pad again rotating at constant speed.
 
My 3403 seemed to get alot hotter when it was new. It never has done a thermal shut down on me, though. It has cooled down alot now that it's well broken in. I've never used anything bigger than a 7.5" LC mushroom foam with it. 6" wool is what I normally use.
 
It gets pretty warm for me, even with a white CCS pad, 1Z High Gloss Polish, and set to speed 1 (about 1000 rpm). If there's one complaint about this amazing machine, it's the heat.
 
I was using a white 6" SFX pad and 106 .





I'm going to try the extension cord but Flex NA has it's speced at 11.4A.



12AWG and then a 14gauge (15 ft in length) should be handling the juice it's pulling though.
 
chefwong said:
How does power equate to thermal... dunno how many EE engineers are in here.

Depending on distance, is how I use my extension cords. Whether it be a 10 or 12 from the main, BUT, I always tend to use a 14awg 15 foot between whatever polisher I'm using and the main cord, as the 14awg is much more lighter and flexible than 12gauge. All my power cords are across the board softer than SJEO cords already...as well, but I do tend to like a lighter gauge when I get closer to the machine at hand....
Click to expand...



google "ohms law". if you know enough about how power equates to heat, you will know to use a heavier gauge extension cord. no matter what the application is, polisher, air compressor, light. if you run the wrong extension cord you can damage your equipment or damage the cord and cause a fire.
 
I hear ya on the gauge but we're talking about a 25' 12awg off the outlet and then a 15' 14awg from that to the machine ? Pulling 11. 4 amps......I could't imagine a huge net difference as opposed to using 12awg straight for the lengths involved ?



Let me see how the 12awg straight behaves with the same combo....
 
gmblack3a said:
I use a 12ga 50ft yellow jacket cord, that is not the issue imo.
Click to expand...



it might still be depending on the size of your breaker, if you are drawing 11.5 amps off a breaker that trips at 20 amps?? on a surge or under heavy load you might not be getting a full 11.5. just my .02 i might be way off and you might have a defective unit. i run a 10ga 100ft cord and running it through a 25 amp breaker dedicated to my one garage out let or at my shop. but if you thermal a unit that much or cause it to over load too many times you can damage the circuit and it will trip for every thing.
 
Not sure if there is a miscommunication error but the breaker was not tripped. The unit itself would thermal - sensor would pick it up in ~crawl state~ due to the unit being too hot.
 
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