emglo (airmate) twin tank 2hp mdl# am780-hc4v - runs hot will not build more than 60 psi

by kevin
(King George va)

Runs and will build up to 60 psi but gets very hot. It is an emglo(airmate) twin tank 2hp mdl# am780-hc4v sn#072300 665. Any help is appreciated. Also any idea where I may find parts?


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Bill says...

Kevin, how's the oil level? I think this is a splash lubed model, is it not. Low oil might be the issue.

Have you checked the intake filter to make sure it is clean? If in doubt, try running the compressor one cycle with the intake filter off to see if that makes any difference.

If the pump head is getting hotter than normal, you may have a valve problem or a gasket problem, meaning that the compressor will run longer without reaching the cut out pressure level, and that would tend to make it overheat.

Cheers,

Bill

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Jan 18, 2012
emglo
by: kevin

Thanks. Oil level ok and filter clean.Must be valves.

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emglo am78hc4v wants to turn over then pops bracker

by frank
(bremerton wa usa)

Started having this problem with it just after years of use...I have 3 that are old that I've tried to keep runinng over many years ..opened all three up from back one crankshaft wont move. Other two other do. Do I need too replace the motor or maybe starter switch? I am good with this kkind of thing usally .but needing help ....parts and fixing cheepper the new? Thanks

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Bill says....

Frank, make sure the power is clean, and you are not using an extension cord.

Then, turn the Emglo compressor off, dump all the air in the tank to zero PSI. Close the tank drain and try to start the compressor. Does it start without blow the breaker now? If so, you need to service your unloader valve.

If that didn't fix it, the next check would be the start capacitor.

Information on unloader valves and checking capacitors is found linked from the site map page.

Cheers,

Bill

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tired emglo - stalling when the pressure reaches about 110

I have a 60 gallon upright emglo that has started kind of stalling when the pressure reaches about 110.It slows way down and sounds like it is binding up but it doesnt. after a break seems to be ok.

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Bill says...

First thing to do is to check the power supply to see if anything has changed. Any other device pulling power from the same circuit as the air compressor is running on will result in under powering the motor, and as the load on the compressor motor increases due to back pressure from the tank, the motor cannot develop enough power to continue, and it starts to stall.

A stalling electric motor will, eventually, be a failing electric motor, so don't keep running it under these conditions if you can avoid it.

If the power is clean, dump all air and power down, and remove and clean the check valve going into the tank.

If this doesn't resolve, please post here as a comment, and we'll pursue further.

Or, as you point out, the motor or capacitor could just be wearing out... and it's getting tired! :-)

Cheers,

Bill



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Emglo older model trips breaker when it automatically kicks in.

by Adam Alander
(Fort St. James BC Canada)

Great site and info by the way!.

My issue is with an older blue dual tank wheel barrel style 1 1/2 HP model.

Note sure the exact model name. I got it used.

Every time I run it, it kicks out/blows the breaker. I have tried it on many plugins (no extension cord) and all the same. Sometimes it runs for a bit and builds up pressure then shuts off once up to pressure just fine, but when the pressure drops and it kicks in to start up again to rebuild pressure it hums and labors for a second or so then the breaker goes.

Some times it kicks out after running for a bit after first turning on. I feel it may be the motor or perhaps it's fighting the pressure in some way once it's built up in the tanks and gives out under the load but I don't know enough about it to be sure.

Any info you can give would be greatly appreciated. I read the other Emglo posts but they don't seem to be exactly the same problem I'm experiencing. Just want to know what steps to take to repair it?
Thanks in advance,
Adam

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Bill says....

Adam, two thoughts come immediately to mind.

One, is your unloader valve working? If it is not, that could be the source of your compressor problem.

The other is that you have a capacitor problem.

See details on both linked from the Troubleshooting pages on the site map page.

If you think it is neither, then post a comment here, and we will delve deeper.

Cheers,

Bill

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Dec 05, 2011
Capacitor, Unloader valve
by: Adam Alander

First off thank you very much for the fast response and help Bill!.

I apologize for my ignorance, but I am wondering where the capacitor is located on the compressor? Also the unloader valve?. I gave my compressor a good look over and found the model number it is the Emglo K15A-8P if that helps. I bet you get a lot of retarded questions like this lol : ). so I appreciate your patience. I have a Journeymans ticket in the Sign industry and have a good problem solving mind and have done troubleshooting of electrical signs among other things but I just need a tiny push in the right direction as to where to look physically on my compressor to see if there are any signs of trouble. Thanks again Bill this site rocks! : )

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Look on the site map page for links to all relevant pages. All info is there. Thanks for your compliments... been a long time since I "rocked" !! :-)


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