Almost baked a/c compressor.

[boyntonstu]

I have a 600 psi gauge and have gone up to 550 psi many times.

Today, I said, why not go to 600 psi and I got a hot answer.

It pumped to 600 psi an I noticed a strange sound so I quickly vente the pressure and it blew a lot of oily smoke.

Apparently, the compressor got too hot.

I let it cool off and it seems OK.

This compressor is from an 8,000 BTU window a/c.

So for now, with this compressor, 550 psi is the limit.

Does my experience sound familiar?

BTW The 600 psi shot went right though the 5/8" plywood and half way through 3/8" plywood about 7" behind it.

BoyntonStu

[cannon monkey]

how long did u have it running for
i dont have one but when i pump enough with my pump it get really hot
that closes i came to anything like that

[boyntonstu]

how long did u have it running for
i dont have one but when i pump enough with my pump it get really hot
that closes i came to anything like that

It ran for about 3 minutes and it was at 600 psi.

How high did you go with yours?

[jmadden91]

i dont have one

I think he means with a hand pump.

Edit, Stu: Does your ac compressor start up well under load? My fridge compressor struggles above 60psi

[boyntonstu]

i dont have one

I think he means with a hand pump.

Edit, Stu: Does your ac compressor start up well under load? My fridge compressor struggles above 60psi

I use a relief valve and therefore never start under a load.

My compressor would also struggle to start.

How high have you gone with yours?

[jmadden91]

Only about 300psi, im getting a relief valve soon to, I was just curious as to whether an ac compressor would perform any differently. Cheers mate

[POLAND_SPUD]

I suppose that quite a lot of heat is a result of compression heating not the heat produced by the motor winding

so the higher the pressure the more heat is produced

[john bunsenburner]

Hmm, you shoudl have a big rig with compressors and have one compressor pump oil through them, that would provide cooling...

OR you find some other way to cool the compressor...

I agree to poland about the compression heating.

[cannon monkey]

i would say the heat comes from the pressure ( like john and poland ) said but i would also say comes from all the moving parts rubing on other parts

[psycix]

My fridge compressor becomes very very hot after running it for a long time.
I never ran it too hot, because I shut it off when it becomes too hot to touch.

However, this helped cooling it: