emglo airmate has oil in...

oil in air tank


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Bill says...

Since an oil lubed compressor bathes the lower piston assembly in oil as the compressor runs, that oil is deposited on the cylinder walls.

The piston seals are supposed to keep that oil in the sump and out of the air stream.

Since I don't know how much oil you have in the air, I can't judge if you have a serious piston seal problem or not.

A little compressor lube oil in the tank is not unusual. A lot of oil would indicate a serious maintenance issue to me.

Note that compressor oil is not good for downstream tools and seals.

Cheers,

Bill

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emglo airmate duel tank - drained oil water mix

Hi my son bought me this airmate compresser for 50.00 and when I drain the tank on the first use it drained oil water mix.

This is my first air compresser and I do not think oil is a good thing water ok but oil please avise me on what I should do.

Also can I use this with a air brush thanks for your help. Jim

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Bill says...

Jim, a little oil in a new compressed air tank may not be cause for major alarm, as it may have entered the tank during manufacturing and assembly.

Run the compressor, drain the tank, and, if all is well, that oil should disappear.

An oil lubricated compressor that continues to have oil, or one that develops oil migrating to the tank, likely has a mechanical seal problem. The likely culprit is the piston seal (ring) that is supposed to keep the oil in the sump, and not allow it to bypass the piston and get into the air stream.

Compressor oil is not good for downstream air using appliances, so try to eliminate the oil from the tank before using the air in tools, or an air brush.

Obviously, when you are air brushing, oil coming out with the compressed air (or water, for that matter) will negatively affect the paint job.

Can you use this type of compressor for air brushing? Sure. You will need an air filter to remove any compressor generated water, and if oil continues to be present, then you will want to have a coalescent filter to remove the oil, as well.

In terms of the air brush itself, they often need low pressure and low flow to work properly. A regulator will take care of lowering the tank pressure to the level necessary. You may need to add a valve upstream from that to reduce the flow if it is too high.

Cheers,

Bill



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I have a 1994 emglo am39hv4 compressor

by dan
(lancaster,pa.)

The compressor starts up and when it hits about 50psi it trips the 12 amp breaker on the unit.

It was going up to operating pressure a few months ago and then tripping the 12 amp breaker on the unit.

Any ideas would be appreciated. When the breaker trips out now at 50psi,If I reset the breaker it trys to slowly start up then trips the 12 amp breaker on the unit

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Bill says...

Dan, from what you have written, I would look to the pressure switch first.

Of course, once the breaker trips, you cannot check flow of current through the switch. But, if the pressure switch is tripping off at 50 PSI, and the normal cut out is over 100 PSI, then replacing the pressure switch is what I would do first.

Worse case? If replacing it does not solve the problem, you now have a spare switch for when it fails, as, eventually, all pressure switches will fail if the compressor is used enough.

Try that, and then post a comment here to let us know if that solved the compressor problem, OK?

Cheers,

Bill

Comments for I have a 1994 emglo am39hv4 compressor

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Apr 19, 2014
Emglo trips breaker
by: Rob B

Hope this answer is not too late. If it trips a breaker, very likely that there is too much voltage drop on the feed wire. Try it in the kitchen with a 20amp breaker being fed from #12 wire with no extension cord. Motors like these draw a lot of current when the motor stalls, thus the breaker trips on overcurrent. National Grid.

Dec 01, 2011
compressor shut off
by: Anonymous

Bill thanks for the tip.Is it worth buying a new reset breaker and or capacitor also? It is an older unit.I was looking at the porter cable 1010 that has been flying out of amazon and home depot lately.Don't know how much money you should spend on a 94 compresssor.It has been treated and cared for very well in the past,and until now has never let me down.The reason I bought this back in 1994 was because at 3/4 horse and a 50' extension cord it would not trip house breakers. Emglo had a 1.5 horse out at the time that you spent all day running to the panel to hit the breaker(only thing this had trouble with was with the senco stapler we used to fasten underlayment with

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If the cost of parts comes close to the cost of new, probably not a good investment, though, a 1994 compressor was probably built a lot better than a new one would be today.

B.


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Emglo - oil is black

My Emglo 4 gal. compressor froze.

A small piece of metal broke off the piston arm.

I removed that and changed the oil. It worked fine for a few hours and then froze again.

I checked the oil and it was black.

I changed the oil again and worked the piston arm free. It works now again but is there a bigger problem I'm missing?
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I think that the rapid discoloration of your oil to black suggests a significant metal-metal wear issue. I also suspect that this compressor pump is not long for this world.

Bill

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