Like i said im putting a 2 stage pump on my air compressor and i need to know how it works and more important how it plumbed and in great detail i need to everything on the head and to the tank pictures would really help along with what every thing is thank you
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Re: im putting a 2 stage pump on my compressor
I would be glad to help with your project, sounds like you are a tinker-er. Most all compressors whether one or two stage are plumbed the same. The important difference is that two stage compressors are made for a higher pressure range. This means that the tank must be able to safely hold more pressure than single stage. Other considerations are that the pressure switch, safety valve, check valve, regulator and all the tubing would need to be upgraded. Finally two stage compressor takes longer to cycle because of lower volume. If you want to continue, post again listing the parts that you already have.
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I don't know about your specific unit, but my compressors have drain valves on the bottom. Mine is like an old radiator drain, but you could have quarter turn valves or screwdriver operated valves, etc. Take a look and post back.
You suspect this unit as being a two stage because of the unusually high cut off pressure. It is a single stage and the motor really has a difficult task and is being pushed to the limits. to reach this pressure. We usually reset the pressure to lower setting ~~ say around 140. Your pump probably has a leaking intank check valve (brass fitting at tank) or leaking valve plate in pump. Simple tests : with pressure in tank unplug compressor from outlet and listens for air leak around pressure switch. As you unplug the running compressor from outlet you should hear air leaking from pressure switch for just a moment as air is let out of airline from pump to tank. If air leaks out till zero pressure then change the valve. If tank holds pressure then valve probably ok. Next test, with no air in tank and air filter removed, plug in compressor and feel intake port for strong suction. If the valve plate is bad, suction will decrease as pressure neers the 120 mark till the point of feeling that air is actually blowing out of intake. With good valve plate there will be strong suction untill unit reaches set pressure. If valve plate is bad also change the cylinder and piston ring. Good luck with your repair.
two different problems here! first when it trips the breaker and you try to reset the breaker and not turn off the compressor on its pressure switch it does not unload the air off the head of the pump when you try to start it again,,, ( when it shuts off normally you hear the air drain near the switch,, this unloads the pump to restart)
The most likely reason it is tripping the breaker is that the second stage (smaller cylinder) is not doing the work it needs to do and the first stage (bigger cylinder) is pumping more now!,,,, higher pressure on this side makes the motor work harder.
I would advise rebuilding both sides to get the pump back up to correct running levels it had new.
depends on what relief valve it is, if it is a 2 stage pump and it is the relief on the inner-stage that is lifting indicates the second stage is not pumping correctly! I would check for a broken valve. if it is the one on the discharge line to the tank, then something is restricting it, check for blockages in the line or in the check valve entering into the tank. Most important you isolate the compressor and drain all air pressure before you attempt any repairs