New check valve, new bleeder valve, still not working
I built a silent air compressor using a refrigerator compressor mounted on a craftsman 3 gal tank that was complete with the pressure gauges, regulator and on/off switch. I do airbrushing and found this "silent" compressor build on the internet. It looked
simple enough and people really rave about them. My problem is this....it seems no one else has mentioned this problem but me....The bleeder valve under the on/off switch is losing air and won't let the compressor build pressure. I know, I read every post on the internet that it is the check valve causing the problem. Well, I replaced the original metric valve with a new one. That didn't work. I brought a new in-tank valve from Grainger....that didn't work. So that's a total of 3 check valves I've tried. It looks like the original one wasn't bad after all.
Now in the process of searching out the problem, my first response was that the problem was to do with the on/off switch (I didn't realize the bleeder valve was only mounted to the switch). I proceeded to dismantle the on/off switch. What a mistake! it is spring loaded and came apart in six different pieces! Now I had to order a new one, which came with a new bleeder valve. O.k., now I had a new bleeder valve too. Well........with a NEW bleeder valve and a NEW pressure valve it still doesn't work. The air continues to leak out the bottom of the bleeder valve, the same problem I started out with.
By the way, I saw this set up with the refrigerator compressor work once already so I know it can work. It started acting up shortly after I completed it. It isn't any leaks in the lines so what is the problem? Anyone out there had the same problem?
If the air is bleeding out the unloader (I think this is what you are calling the bleeder valve) while the compressor is running, then it is possible that the unloader valve is leaking.
If air is coming out of the unloader valve when the compressor is off, then, the only place that air can be coming from is the tank, and, the only way air would be getting out of the tank and out the unloader valve - which is open all the time the compressor is off - is if it is leaking by the seal in the tank check valve.
So, it's a leaking unloader or a leaking tank check valve.