Compressor help

[pvanderlugt]

Hello everyone, Pete here in Ohio.Been a member for a while, really haven't posted anything, look everyday though .
Converted an old 36x86 hay barn into a workshop been working on it for a couple of years, not anywhere finished but usable for now. Ran into a problem with my air compressor and was wondering what you guy's think,
Bought a IR 5hp 60 gallon with an SS5 pump last year at TSC for a decent price, didn't install it right away since I was still building shop. Long story short, shop finally usable and start using it. Compressor has probably less than 1 hr run time. compressor runs fine, but does not build up pressure over 85 psi, tank valve closed, no leaks. compressor does not shut off(makes sense, not hitting cut off pressure) The pump head and motor gets pretty hot, copper line to tank does not. Belt is not slipping. did not have any problems before, ran like a champ. Any suggestions on what to look for? Haven't contacted TSC or IR warranty yet but will on Monday. Would like to get an idea off what might be wrong before I talk to somebody.
Thanks for your time
Pete

 

[Zrexxer]

First thing I'd look at is whether the check valve in the tank is stuck.

 

[ZRX61]

The pump head and motor gets pretty hot, copper line to tank does not. Pete

That's rather bizarre...


Did you break in the pump etc by running it for 30-40 minutes with the drain valve open so it can't build pressure?

 

[pvanderlugt]

Did you break in the pump etc by running it for 30-40 minutes with the drain valve open so it can't build pressure?[/QUOTE]

nope, was just using an angle grinder and noticed the compressor did not stop running after I stopped grinding. Checked out the compressor, noticed it was only running at 85 psi, head and motor hot, line to tank was not. Sounded fine while running. I will look at the regulator valve at the tank and see how that is working.
Pete

 

[scooterseats]

With the head getting hot and not the discharge line I would suspect the suction valve is leaking or has some trash on the seat. I would remove the suction valve and inspect it for worn or broken components first.

 

[Climber]

With the head getting hot and not the discharge line I would suspect the suction valve is leaking or has some trash on the seat. I would remove the suction valve and inspect it for worn or broken components first.

Agree 100%

If some think broke - Check cylinder, piston, rings for damages form particles.
Do not run before you check.

 

[pvanderlugt]

Tore the head apart yesterday, found a lot of rust particles laying on top of the valve plate, including some lodged in the valves. Head casting very rough and I think some of the roughness rusted and fell off. Valve plate pretty rusted as well, i think due to poor CAD plating. IR in Detroit was great to deal with and are sending me a new valve plate and gaskets under warranty. I think I will clean the head up some and try to polish out some of the roughness. Hope that will fix the problem.
Thanks for the advice guys
Pete