Air Compressor Issue
Printed From: The Ford Torino Page
Category: General Discussion
Forum Name: Auto Body Forum
Forum Description: Discussion of anything related to body, paint and metal work/restoration
URL: https://forum.grantorinosport.org/forum_posts.asp?TID=7713
Printed Date: 26-March-2026 at 3:54PM
Software Version: Web Wiz Forums 12.06 - https://www.webwizforums.com
Topic: Air Compressor Issue
Posted By: wideone
Subject: Air Compressor Issue
Date Posted: 26-July-2012 at 2:38AM
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I have a IR 80 gal 7.5 max hp compressor. It kicked on yesterday and filled up like always, then started what sounded like shot gun shots. After I cut it off, you could see the tank pegged at 150 psi. My thoughts are that the pressure blow off is bad or going bad. The unit is mounted in the corner and I haven't tried to get into it yet. It did fine for about 4 more cycles, then started doing it again about every 10 seconds till I cut it off. Anyone have any thoughts? I hope this is as simple as replacing the pressure blow off. Thanks Randy ------------- Randy "I got some Tony Joe White on my stereo" 72 Gran Torino 71 GTO Convertible 84 Vette |
Replies:
Posted By: ilyes
Date Posted: 26-July-2012 at 2:50AM
| What is your regular tank pressure? |
Posted By: wideone
Date Posted: 26-July-2012 at 3:32AM
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As far as I know Ilyes, it has always been around 150 which is straight up on the guage. Seems like it was always normally there when I shut the compressor off. I did have an electrical surge in the garage during the last few storms that killed the tv there. The comressor is on a breaker, then a fused shut off box so I think I am safe from the surge as nothing tripped. Thanks ------------- Randy "I got some Tony Joe White on my stereo" 72 Gran Torino 71 GTO Convertible 84 Vette |
Posted By: Psquare75
Date Posted: 26-July-2012 at 5:09AM
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My pressure blow off got stuck open once. That was fun. Worth looking at. ------------- Paul 77 XR7 460/C6/3.00:1 *SOLD* 78 XR7 523/C6/3.5:1 79 F100 460/TKO500/3.25:1 'I also have some left over potatoes-I understand you can generate electricity from them'- Foote500 |
Posted By: Rockatansky
Date Posted: 26-July-2012 at 6:12AM
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or it could be the high pressure cut off switch is allowing it to run up over the blow-off limit and the high pressure relief valve was operating properly ------------- 72 GT Ute |
Posted By: wideone
Date Posted: 26-July-2012 at 6:35AM
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This makes sense as it "fixes" itself after being turned off. I'm going to try and use it tonight to finish the repair to the side of my car. Very little painting/clear coat and I'll be done. Thanks ------------- Randy "I got some Tony Joe White on my stereo" 72 Gran Torino 71 GTO Convertible 84 Vette |
Rockatansky wrote:Posted By: Robbdtme
Date Posted: 26-July-2012 at 7:18AM
| I go with the electrical pressure relay switch too as you mentioned having some electrical surges |
Posted By: wideone
Date Posted: 26-July-2012 at 3:57PM
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Well, it is supposed to be 135 psi max. I cycled it four times tonight, first 3 everything was fine. Fourth time it ran away to 150, hit the pop off and wouldn't shut off. Going to see about getting a replacement. I think it is heat related. Thanks ------------- Randy "I got some Tony Joe White on my stereo" 72 Gran Torino 71 GTO Convertible 84 Vette |
Posted By: ilyes
Date Posted: 26-July-2012 at 4:23PM
| it might be, as air expends when hot, and it could simply expand in the tank |
Posted By: wideone
Date Posted: 12-January-2013 at 2:26PM
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Just to put this to bed, it was the pressure switch. Easy fix, but i still don't understand why it would work correctly for as long as a week, the run away to the point you couldn't shut it off using the switch, had to trip the breaker to kill it. oh well. ------------- Randy "I got some Tony Joe White on my stereo" 72 Gran Torino 71 GTO Convertible 84 Vette |