Kellogg 452 Unloader -- Operation?

by franklynberry
(milwaukee, wi, usa)

I'm looking for troubleshooting/theory of operation info on a

Kellogg-American Type 452 -- not a knock-off. I have a parts breakdown,
and found a crack in the #76281 CU valve assembly, which I think
sends blow-off signal pressure to the remote blow-off valve.
Here's a link to the fitting picture:

https://picasaweb.google.com/lh/photo/nrfichGx6myJkSxEoUO_uusc3tGe6eOGAG5vHp7AEgQ?feat=directlink

I've had no luck finding an owner/service manual on the internet.
Any help is appreciated.

--frankb

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Nov 24, 2012
Found it.
by: franklynberry

Here's a summary document: centrifugal unloader valve theory of operation.


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compair holman 125 builds air but revs hard and does not slow down

by john Joskin
(england)

it runs and builds air but revs hard and does not slow down any ideas

____________________
Bill says...

John, the pressure switch system on your compressor is supposed to sense when the pressure in the tank reaches the normal cut out pressure level.

Since yours is a gas powered air compressor, when the pressure in the tank reaches the cut out level, rather than shutting off a motor, as happens on some electrically powered air compressors, your pressure switch signals the throttle to ease off, reducing the RPM of the gas motor. Then, when air pressure in the tank and system drops to cut in, your throttle valve should have the motor rev back up.

It seems to me that you are experiencing a problem with the pressure switch / throttle valve circuit, and that's best dealt with by a motor mechanic.

Cheers,

Bill

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Compair Dlt0206oil blowing oil out of the air cleaner intake

by Bernard Gilby
(Kwekwe Zimbabwe)

Any ideas as to why my Compair Dlt0206 has oil blowing out of the air cleaner intake?

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Jan 07, 2014
oil
by: Doug in s.d.ca

Nice machine.

Serviced the oil separator lately?

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COMPRESSOR SHUTTING DOWN

by steve gutkowski
(roseville ca )

MY COMP AIR COMPRESSOR KEEPS SHUTTING OFF, AND JUST NOW DIDNT WANT TO TURN BACK ON. IT HAS BEEN DOING THIS FOR A WHILE NOW, AND WE NEED A FIX. PLEASE HELP!!!
STEVE GUTKOWSKI

______________________
Happy to post this for you Steve. I hope someone can help. You might want to add the model number, the age / use level, and any other information about the condition of your air compressor right now that might help someone help you.

Bill

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Aug 16, 2013
Possible fix
by: spraggy

If your compressor keeps cutting out it could be that the air screw is overheating due to lack of oil. My Compair Holman(Zitair) 70D had the same symptoms when the engine or airscrew overheats a sensor detects this and shuts down the fuel supply at the fuel cutoff solinoid check the air receiver oil level unscrew the big alloy filler plug and fill with airscrew oil only to required level as indicated on the lipstick. Hope this helps.
Spraggy

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