AEA Question from a noob re: M 50 and/or air compressor

I am very new to this, and this is probably a terrible question, I apologize in advance in case it's even worse than I'm thinking it probably is,

I bought an M 50 pistol from Bintac/AE. And my friend has a hand pump, he has filled it for me once or twice with it, so I am sure nothing is wrong with the gun.

I have now bought two air compressors from Amazon, the first one cost $180 and the second one $260. I returned the first one because it didn't seem to fill the tank at all. Now I'm about to return the second one for the same reason, so I am quite sure I'm doing something wrong.

I honestly can't understand what the problem is, it's not filling the tank at all. Neither compressor has done Neither the gun nor the compressor came with any instructions, and I can't find any YouTube videos with either of the compressors I bought, but even watching the videos with other compressors, they are doing basically the same thing I am trying to do with mine.

I'm not above thinking that I truly am stupid, at this point I am definitely allowing for that possibilty

And yes, I know I bought a cheap compressor. Is that really the entire problem, do they not work at all if they are affordable? To me that seems absurd, like I figured it is maybe not as fast, or not as quiet, but do the cheap ones really just not work at all?

These are the specs for the compressor I have,

Portable 12 volt hpa compressor. 220v - 110v - 12v
Volume. L34 x w17 x h27 (cm)
Weight. 8.8 kg
Cooling method: fan air cooled
Compression mode: fan air cooled
Compression mode: 3 stage compression
Power supply: 12 volt DC
Power: 350 watts
Inflation pressure 30mpa or 4500 psi
Charging rate : 13 minutes / 0.45 liter tank
0-30mpa (300 bar)


Can anyone enlighten me here, is there something I'm missing? Thank you in advance if you are cool enough to take the time to reply, I know I am soliciting free advice here, I'll I have to give in return is my gratitude... Or I may have an M 50 I can give you a good deal on if the problem turns out to be that I just can't afford a good enough compressor.
 
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Before you send this one back, try replacing the 0-rings in the hose ends (inside the foster fitting) with a better ones.

I just bought a Rovair compressor ($500) and it only works intermittently. I have to move the hose around before it seals and starts to fill. I'm replacing the o-rings in the hose tomorrow and that better f'n work or back it goes to PAir. FWIW the rovair hose uses 010 o-rings.

Here's a link to the o-ring issue:

 
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If you have a deadhead you can plug it in and see if it gets up to pressure. Pressure relief valve has to be closed to pressurize. In my opinion its unlikely that you got two broken compressors. You can even place your finger over the fill whip while its running to feel if any air is even coming out. If not, compressor may be broken or a fitting may be loose or missing/broken oring somewhere.
 
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If you have a deadhead you can plug it in and see if it gets up to pressure. Pressure relief valve has to be closed to pressurize. In my opinion its unlikely that you got two broken compressors. You can even place your finger over the fill whip while its running to feel if any air is even coming out. If not, compressor may be broken or a fitting may be loose or missing/broken oring somewhere.
Good call on the loose fittings. I just got the wrenches out and tightened mine.
 
These compressors work, however, they've fallen out of favor due to a 12-18 month lifespan and limited rebuilding success. As charlie99 said, best way to test compressor is to deadhead plug (pictured) end of fill whip (hose) and pressurize system. A good compressor builds and holds pressure after shut-off. MAKE SURE TO RELEASE PRESSURE BEFORE RE-STARTING COMPRESSOR. Check spare parts that came with compressor, deadhead plug likely included. Knowing the gun takes air and if compressor checks out might be a problem with hook-up to gun. Would handpumping friend be available to verify proper hook-up? WM
IMG_20220326_223819.jpg
 
I have a feeling this is just a matter of closing the bleed valve. There is a knob that allows you to release the pressure in the hose after filling the gun. It needs to be closed before you start filling or else the air never gets pumped through. I found this random image of a compressor, here is where the bleed screw is on this one

IMG_5497.jpeg
 
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I have a feeling this is just a matter of closing the bleed valve. There is a knob that allows you to release the pressure in the hose after filling the gun. It needs to be closed before you start filling or else the air never gets pumped through. I found this random image of a compressor, here is where the bleed screw is on this one

View attachment 551309
Thank you for your detailed advice. This should help, im sure that's what it is
 
These compressors work, however, they've fallen out of favor due to a 12-18 month lifespan and limited rebuilding success. As charlie99 said, best way to test compressor is to deadhead plug (pictured) end of fill whip (hose) and pressurize system. A good compressor builds and holds pressure after shut-off. MAKE SURE TO RELEASE PRESSURE BEFORE RE-STARTING COMPRESSOR. Check spare parts that came with compressor, deadhead plug likely included. Knowing the gun takes air and if compressor checks out might be a problem with hook-up to gun. Would handpumping friend be available to verify proper hook-up? WMView attachment 550976
My hand pumping friend tried it and he couldn't figure it out either. He yas only ever used the hand pump, and is fairly new to this himself. But i think the advice I've gotten here will help when i try again tomorrow. Thank you.
 
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