SS5 not releasing line pressure on shut-off

by TJ
(Minneapolis)

My SS5 compressor has worked flawlessly for years.


Last week I noticed that when I manually turned it off (didn't allow it to reach 130 psi - where it typically shuts itself off), it did not make the typical noise when stopping.

It usually powers off and makes a several second hissing noise which, I assume, is the excess line pressure bleeding off between the cylinder and the safety valve. I have not run it up to the automatic shut off (assuming that it would shut off).

I don't have much experience with compressors, so I apologize if my question is redundant.

Any thoughts?

Thanks!

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Dec 12, 2015
Check valve?
by: Carl

Hi When you say "I assume, is the excess line pressure bleeding off between the cylinder and the safety valve" that's right. Have a look at the valve that is connected to the cylinder, as you describe it. It should be a brass lump that a hose goes to from the pressure switch.

Make sure there is no pressure in the cylinder at all, then unscrew undo the cap on the brass "lump" this is called a check valve, make sure the little spring is still intact and the little rubber valve looks ok and isn't stuck closed.

Reassemble and try it again. If the same problem exists then you may want to replace your pressure switch.

Hope that helps

Carl

Dec 12, 2015
SS5 shut off
by: Doug in s.d.ca

I find that interrupting the normal shut off manually defeats the unloader and makes it hard to restart, sometimes needing to drain tank, depending on the tank pressure.

Don't worry about it, unless it happens when it runs to auto shutdown and does the same thing.

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Ingersoll Rand SS-5 motor starts then builds RPM

by Eric Hardin
(Corpus Christi Texas)

Hi, I'm using an Ingersoll Rand SS-5 60 gallon 5 hp. When it starts it sounds like it is running at about 90% RPM and picks up to full RPM in about 1 min.

After it has ran and shut off the motor is cool to the touch and will start in the same way every time.

It's running on a 30 amp breaker with 10 gauge wire about 35 feet from the panel to the compressor.

Any info would be great.

Thanks

Eric H.

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Nov 29, 2015
slow start
by: Doug in s.d.ca

If it has capacitors, start there. Run cap may be weak.

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Cant get a steady flow from ingersoll rand #SS5N5

by Bryan
(Ohio)

I have a compressor hooked up to a small blast cabinet and I cant get a steady flow of glass bead to come through without having to continuously squeeze the trigger on the blasting gun without. Compressor say max air is 135psi and even after it fills and cuts of I just cant get a steady stream of media through the gun. upgraded to a bigger hose in the cabinet and it made a slight difference but not much. This has me scratching my head. Thanks and hope u can shed some light on my situation.

Bryan L.

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Feb 25, 2015
media
by: Doug in s.d.ca

Depending on the blast media, you may be looking at too much humidity.

Do you have a dryer or at least a water separator on it?

Feb 24, 2015
Can't get enough flow...
by: Bill

Your 5 HP Ingersoll Rand should deliver about 20 CFM of compressed air at 90 PSI.

What are the air demands of the blast cabinet in PSI and flow?

Bill

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Ingersoll rand SS5 will not build enough pressure to shut off

by Bob
(Wellesley island ny)

Ingersoll Rand SS5 air compressor

Ingersoll Rand SS5 air compressor

ingersoll. Rand will not build enough preasure to shut off it gets to about 80psi and continues to run. Any ideas as to what would cause this

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Mar 27, 2016
Please help - Mike, please start a new thread)
by: Mike

I had the SS five when it starts it sounds like there is too much pressure for the motor to turn over the air compressor it makes a loud squealing noise and turn Real slow then it will gradually build up pressure and then shut off something is definitely not right I feel like the motor is fine just something is stopping the pump from turning over any suggestions

(Please start a new thread with what appears to be a new topic. Thank you.)

Jan 18, 2016
SS5 compressor problem
by: Bill

Please start a new discussion with what appears to be a new topic.

Thanks.

Jan 18, 2016
Struggles under pressure
by: Kris

I have the SS5 and it struggles to pump at about 95psi. The belt slips and it boggs down really slow for about a min then goes back to normal. I have about 35ft. of 10ga. wire running to it at 30 amps. I checked with my volt meter to confirm and its not loosing any voltage. Any Suggestions?

Apr 28, 2015
Compressor
by: Wayne Lastique

Faulty pressure switch adjustment

Nov 30, 2014
ss5 air pressure problem fixed
by: John

The problem is the valve plate gasket. It has a defect and tears right in the middle allowing the air to travel between the two valves fighting each other. I made my own gasket with a high temp. Material and coated them with copper spray on both sides. I put it all back together and just like magic it was fixed.

Oct 09, 2014
IR won't shut off
by: Bill

Bob, check out the troubleshooting pages.

The issues with air compressor that run and don't build pressure are covered in detail there.

Bill

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