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Wont kick off, runs constant

When i manually turn it off, it wont turn back on,its a 2 hp 2 1/2 gallon tank, the motor is almost bigger than the tank lol, help friends

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It is possible that the capacitor is bad, check the mfd rating on the capacitor which will be probably around 35mfd or 45mfd as example. Replace capacitor with exactly the same microfarad rating as the original.

Posted on Mar 09, 2009

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My 60 gallon kolbalt was running and stop when it filled now it wont go o ever with the tank drain it spins free it does nothing no sounds either


When you say it does nothing do you mean the motor wont come on or the motor comes on and it wont build pressure? if the motor comes on, there are several possibilities:
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http://www.mastertoolrepair.com/air-compressor-parts-vt6362-p-60727.html

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After first full tank on air, and you used it, when it kicks back onto recharge the the tank, the motor runs slow and blows 15amp fuse.


Sounds like you need a bigger fuse.What happens is there is no load (air) in the tank so their is no compression and the motor isn't working as hard as when it reach's the cut off point and restarts.Now there is air in the tank which makes the motor work harder and that pulls more than 15 amps and blows the breaker.I would start with a 30 amp and go higher if need be.Thank You for choosing FixYa.com


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You did not list model number, however if you have oilless type check the cylinder/piston by manually turning crank until piston is at top and examine cylinder for wear or scratches. If worn replace cylinder kit for full pressure. If ok check reed valves /valve plate for wear or broken reeds. If oil bath type, problem is usually air leak or reed valves / valve plate. As a general rule, you can keep track of wear by noting how many minutes it takes to fill the tank to cut-out. As the compressor wears it will take increasingly longer to fill. When new, and depending on tank size/ hp, most compessors fill within 2 ~ 5 min. Good luck

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Check the reset button on the motor to see if it tripped. The motor may be overheating. Some motors have an internal breaker and they have to cool off before they restart. Also check the pressure switch. Move the switch back and forth ( on and off ) and listen for a click. If it doesn't click with low to no air pressure then the switch is bad.

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Tank size only becomes a factor for one reason – A larger tank for air. A compressor will run until the pressure in the tank builds to its high-pressure point. Obviously, the bigger the tank, the longer it takes to consume the compressed air. However, the downfall is that once the air is depleted, it takes a lot longer for the air tank to refill with pressurized air. I would only go with the bigger tank if I am concerned about the motor starting and stopping too often, or if I know that I will need a constant flow of air in longer intervals. You have a choice between a larger tank and a constant-run unit.

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