Replies

1. 
   Sphere | Sep 11, 2009 04:46pm | #1

   I know some can be tweaked, not famil. with yours specifically. BUT, if you bump up the low side kick on, the motor may not have enough chutzpah to get going. Then it hums until a breaker kicks or the smoke leaks outta it.

   Cold weather may make it even worse.

   Spheramid Enterprises Architectural Woodworks

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   "If Brains was lard, you couldn't grease much of a pan"
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1. 
   yup | Sep 11, 2009 05:04pm | #2

   thanks very much for the reply, sounds like i'll be using it as is.db

2. 
   davidmeiland | Sep 11, 2009 05:09pm | #3

   I have the same issue with my Makita 5200 compressor.... it kicks on too low. I attempted to look at the pressure switch one day on the job, but I was kneeling on asphalt trying to figure out whether one of the two screws in there would boost the low kick-in level, and ended up having to get back to work. What I need to do is bring it back to the shop, identify the make/model # of the switch, download whatever info I can from the mfr.... etc. Still may not be possible, or I may buy a different switch. I need this thing to run from 100 to 125, not lower than 100.

3. 
   Scott | Sep 11, 2009 07:48pm | #4

   I've never seen a pressure switch that wasn't adjustable, both for kick in/kick out pressure and the differential between the two. But I'm not familiar with this model.

   If it can't be done, visit your local industrial supply shop. Pressure switches are fairly inexpensive, and will save you a lot of frustration.

   I like to add a regulator, which sends a nice even pressure to the nailer. Set the switch to cycle from about 105 to 120 PSI, but set the regulator at 100. That way the nailer sees nothing but a nice steady 100 PSI.

   Scott.

   
   

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   Edited 9/11/2009 12:50 pm by Scott

4. 
   JTC1 | Sep 11, 2009 11:40pm | #5

   Scott has the answer.

   If you cannot adjust the low end pressure to your liking, replace the switch -- hang onto the old one just in case you encounter problems, like sphere said.

   Grainger would be a good starting place.......

   Jim

   Never underestimate the value of a sharp pencil or good light.

   
   

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   Edited 9/11/2009 4:41 pm ET by JTC1

1. 
   Ozlander | Sep 12, 2009 04:52am | #6

   The instructions are sometimes in the cover.

5. 
   m2akita | Sep 12, 2009 05:23am | #7

   Call the Makita tech support.  See what they say.

    

    

   Live by the sword, die by the sword....choose your sword wisely.
1. 
   yup | Sep 12, 2009 06:47am | #8

   great advice, thanks. i'll pursue the adjustment first then look at replacing if the adjustment doesn't do it. i figured there had to be a solution as 80psi seemed way too low...db

6. 
   Vwright | Sep 16, 2009 09:19am | #9

   I've got a mac 700, pressure switch is probably the same. Take off the cover of the switch and it should have a little diagram showing which screw to adjust. On mine the left screw adjusts the cut in and cut out pressure and the right screw adjusts the cut in pressure only. These seem to be the same basic pressure switches as a water pump.

   Vern.