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Hi.. .I have a 60 gallon Kobalt compressor that is having problems…
Pressure switch and unloader valve are new.
Symptoms:
It starts fine and although gauge does not read pressure in the tank, it seems to be building some.
When it reach 20 you can feel the pump starts to work harder and when it gets to 30 PSI, the motor cant push it anymore and the velt stars to slip…
When turning it off… all the ir is being bleed through the unloader valve until everything is empty.
Would you think a faulty check valve could be the problem?
Hi Emmanuel. Yes indeed, the first thing to do is empty all air, remove the tank check valve, clean it so it works properly or replace it, then test the compressor again. Add a comment here with results if you get the chance. Thanks.
Hello, I’m a uni student and need some guidance for my grad project. Is it possible to use a compressor or pump to pull carbon dioxide gas from an incinerator (after cooling process) and then inject that gas it into a tank? Any help is welcome, thank you!
While your application is well beyond my skill set, a compressor is simply a pump. If the intake of the compressor is pulling CO2 instead of free air, the compressor doesn’t care. It will pull in gas and compress it into the tank. How you ensure that you only pull in CO2, and in enough volume for the compressor is up to how you plumb the installation.
Please do add a comment as the project unfolds. I, and others visiting this site, would be interested in updates. Good luck.
I have an old MF Master Elite Compressor. I’m in search of 2 tiny screws that secure the pressure gauge cover to the gauge itself or a completely new gauge. Also, the brass valve (see photo) leaks when I shut off the compressor. I don’t know what it is and was hoping someone could identify it – and possibly know where to get a new one.
Thank you,
David Latch
This is/was a MasterCraft compressor. Not sure if it was available anywhere in the U.S., but certainly available in Canada via the retail outlet Canadian Tire. While appearing to be a better quality than their products are today, this was still a fairly low cost compressor. Given that, and given that there aren’t parts available for it that I know of, finding two screws for a gauge might be impossible. If not impossible, will most likely cost more than the gauge is worth. Use your browser to search for “air compressor pressure gauges” and you’ll find lots, of varying qualities… Read more »
This might be a dumb question but I cannot find any information about this online. My replacement capacitors are slightly smaller than the originals which cause them to be a little loose under the cover housing. If the caps vibrate and the 2 spade connectors touch the metal cover housing, can I be electrocuted? My spade connectors are not covered. Are they suppose to have a protective cover or something?
Not so dumb. Safety first! It were me I would sure isolate the spade connectors so that they cannot touch anything they aren’t supposed to. Yup, even if the compressor is off, if touching the cap housing, the capacitor can deliver a jolt. Shouldn’t be an issue with the smaller cap as long as the specs are similar to the original, in terms of function, but you sure do want to make sure no bare electrical anything can touch metal or anything else it’s not supposed to touch.
I just purchased and installed a 034 Sanborn pressure switch on my compressor. When I turn the switch to the off position, the unloader valve stays open and leaks all of the pressure out of the tank. Is there an adjustment for this?
Consider where the air is coming from when the unloader leaks. As you point out, it’s the tank. What’s supposed to keep the air in the tank when the unloader is open? The tank check valve. I suspect yours is leaking or has failed.
I picked up an old air compressor pump, tank and motor last night. Pump is a Buckeye ball bearing model v20-6c serial 6266. im looking for any info i can get on this pump. Any help would be greatly appreciated.
thanks, mike
BRA7180V (7.5HP/80 gallon/175psi) air compressor. What is the little lever on the backside of the pressure switch box? I just picked up the air compressor and had my electrician hook everything up. It works great but I’m puzzled about the little lever on the back of the pressure switch box. It can be moved to the vertical or horizontal position–but I’m hesitant to mess with it. I do notice the pressure switch shuts off at 150psi and I believe mine is rated to 175psi. Any guidance since I don’t have a manual?
Please take a photo of the side and back of the pressure switch where the “switch” is and upload them in a comment here, if you would. Thanks.
Does my twin cylinder oil free Pro Air II 6 hp 60 gal. made by DeVilbis need regular lubing? It’s in a soundproof box, but starting to get louder. Cant get to it unless I dismantle the box, so am asking for specific places it might need lubricant. What oil is recommended for that?
Thanks!
There are so many models of this air compressor out there that we cannot determine which is yours. Please remove the cover from the pump, and add a comment with a photo from each side of the pump.
I have a Sullivan d1850 air compressor while using it it suddenly lost air pressure and the motor revved up freely
I have a 2003 Porter-Cable consumer compressor (model CPF234005-2). The regulator adjustment seems to have frozen, at around 50 psi and I cannot change it to get air gun pressures. The tank gets to full pressure. As it happened, my 18 ga nailer also failed, so I purchased a combo kit. The regulator seems to be part and parcel of the manifold, and a replacement seems to be over $100. Is there a cheaper and safe way to rig a regulator, gauge and outlet so I can use this as a spare compressor?
Many Thanks
David
Possibly if you can remove just the regulator. Seeing the manifold and where the regulator is in it would certainly help.
Or, use off-the-shelf brass fittings from a good plumbing supply shop… adapters, connectors, tees etc. to rebuild the manifold from scratch. Start at where the air exits the tank, and build out from there. It’ll likely look like heck, but if you emulate what’s there, it’s work. The compressed air doesn’t care!
When I fill the Compresser with air. I take the hose off the coupler. All the air comes out of the coupler. What is wrong. How do I fix this.. The Compresser is A, Central Pneumatic. Oil Air Compresser. 8 gallon 2 HP 125 PSI. Please…
Well hi there Carol. Your question has prompted a new page on this site, so thanks for taking the time to post. I hope this page helps you fix your compressor.