Question about Husky H1503tp

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Motor does not shut off at 155 psi

And blows the safety valve

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The pressure shut off switch is not working right.. I would contact husky about a replacement part

Posted on Nov 29, 2013


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Posted on Jan 02, 2017


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My air compressors filled up with air and shut off when the air got below a certain psi and did not kick back in to fill the tank can you help me.

Pressure problems can be several pressureline leaks

If an air pressure switch (pressostat) does not return replace the pressure switch a gray colored or white or black colored box with the powercables comin to and the power knob on it red black gay or other color. that is the problem itself in this case . the mechanic jumped not up it hangs , best is to replace the complete part.

If the compressor filling the tank and when its reached the pressure and it blow from out the safety valve then the pressostat its too high adjusted. there is a max pressure on the valve to read is it blow off below the max replace the safety valve.

Is your pressure is build up but it blow out the Pressure relief nipple its a part of the pressostat in most case , the your Non-return valve on the tank is dirty or by dirtable metal parts from the pressure line membrane parts .

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My D55141 heavy duty 2gal (7.6L) 150 psi max builds pressure up to around 150 releases pop off valve then keeps running, what causes this problem?

The pressure switch is either out of adjustment or has failed. The compressor should shut off at a much lower pressure than the safety valve (~100 psi)

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1 Answer

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Depending on the pressure in the tank when the safety valve releases,the problem is likely your pressure switch. If the pressure is at or above 160 psi when it blows, then the problem is the switch.If the pressure is lower, then it is likely a faulty safety valve. There are about 8 versions of this machine. check on dewalt service net for the correct part. you may need to check ebay if the part is nla thru dewalt.

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1 Answer

The safety valve blow out when it reach 110 pound

If the safety valve blowS out when it reachES 110 poundS, it is either the safety valve or the gauge is wrong and there is more than 110 psi.

Feb 04, 2014 | Campbell Hausfeld Fp209501

1 Answer

Does not shut off and the safety valve went off

Your problem dependents on when the safety valve is opening. If the safety valve is opening before the tank reaches its rated high pressure level, usually 130 to 150 psi, the spring in the valve is weak or broken; replace the safety valve. If the tank pressure is going over the rated high pressure level, the pressure switch isn't turning the motor off when it should; replace the pressure swtich.

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Low side pressure should be 28-32 PSI, you have a big problem here, possible expansion valve issue.

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1 Answer

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IS this a 175 psi unit. What was the safety valve psi that was replaced. I recommend removing the heads and checking the valves. Suspect you will find one of them bad.If safety is past the hp head remove and check hp valves first. If safety is after lp head check it first. I have seen and lp valve break and pieces carry over to the hp side. So if lp valve bad you may want to inspect the hp side also. Good luck!

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1 Answer

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Hi there. This is normal. The pressure is set to stop at around 120-140 PSI as a safety measure. It probably kicks in again around 80 PSI so as to remain pressurized between 80 and 140 PSI. Since most air tools operate in this range, it is ok for the compressor to maintain pressure in that range. You do not want to adjust the maximum pressure safety release valve as it could be extremely dangerous as certain components in the compressor may only be rated up to 140 PSI or slightly higher before they fail or blow apart.

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2 Answers

1998 900S turbo overboost

the turbo waste gate has vacuum to it regulated to make it open at a specific psi... try turbo city in anaheim,Ca for more answers to aftermarket stuff

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