clarke air industrial compressor wont start sometimes, but sometimes it does??

by Matthew fricker

Hi,

I have a clarke air industrial 150l piston compressor thats about a year and a half old, its worked perfectly untill today.

We noticed earlier that it was starting sluggishly, now it starts sluggishly sometimes and works fine, other times it turns once and the overheat switch cuts in and stops it, then it continues to do this for a few mins till it eventually starts fine again.

It cant be the cold as winter where i live has barely set it yet, and it ran last winter fine. Its wired in the same way it has always been and has Always worked fine.

I just cant understand how it works sometimes and not others. I would just like to add that it still starts sluggishly even when it does work and the psssshhhh sound is heard when it fills up.

It also doesnt work more times than it does.
Please help as soon as you can as im really stuck and i run a small car repair centre (uniquecustoms.co.uk) and we have a van to paint by end of week and this is my only compressor as the other 200l is dead too :(
ThAnks
Matthew

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Bill says...

Matthew, no change in power supply, nothing else pulling power from the same circuit sometimes when the compressor is trying to start? Make sure the power source is clean.

Turn off the compressor, dump all the air from the tank, close the tank drain, and start the compressor. Any change? If it starts fine with no air, I suspect a sticking unloader valve or perhaps the pressure switch is not tripping fully or properly, and the unloader isn't getting opened every time, or full power isn't flowing to the motor when it is supposed to.

Next guess... start capacitor, though I would expect that to be a constant problem rather than intermittent if it was failing.

Give us some feedback as a comment, please.

Cheers,

Bill





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Nov 03, 2011
Response
by: Matthew

No change to power supply or anything added or taken away but have noticed a small valve on the heatsink on the pipe that goes out from the pistons into the tank that seems to be sticking and making more noise than it used to. I assume that this valve opens when the compressor starts to allow airflow into the tank and closes when it stops to keep it in the tank, i would assume then that if it sticks closed on startup then the compressor is overloades and it cuts out. I also assume that the sluggish startups that work are sluggish as the valve is slow to open. I want to check the next time it cuts out if the valve has opened and if it hasnt then i would say thats the prob. However it hasnt failed yet today so untill it does i cant say. If this does turn out the problem can i fix it? Is it ok to unscrew it and clean and oil it just i dont want to break it. Thanks for all your help.
Matthew

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Before doing any work on the compressor, unplug it, and drain all the pressure from the tank. Then, fill your boots!

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CLARKE AIR MODEL SE16C150 keeps switching off after about 30 seconds

by ANDREW RICHARDSON
(PRESTON)

CLARKE AIR MODEL SE16C150 SERIAL NO. 31965 YEAR 2002 10.2 BAR

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Bill says...

When it is switching off, can you see or hear the pressure switch tripping, or is it shutting off for other reasons, like, perhaps the compressor is going off on thermal overload.

I need to know how it's shutting off. Please post a comment here with as much more info as you can give me, like what pressure it reaches before it shuts off, do you have an extension cord, is it the only thing drawing power from the same electrical circuit... and so on.

Cheers,

Bill

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1998 clarke Air Industrial connect run cap

by Tony Ryan
(Ireland)

Hi,I have a 1998 Clarke air industrial compressor. Just recently when turned on the the fans are trying to kick in but can't for some reason.

There is no smell of burn from the motor so I was told it could be the run capacitor.

I have purchased a new one. The model is 55 uf and 400-450 near enough the same as what was in it only thinner but numbers matching up the same.

There is 2 wires from capacitor, blue and brown.

My problem is when taking out the old one I never made a little diagram as to where the wires go back and has slipped my mind now and I have no idea how to connect up the new one to know if this was my problem.

Not a good electrician obviously.

Would b great if I saw a small video of it being done. Afraid to chance it cos I have no idea of the outcome if it was wrong, thanking you Tony.
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I hope someone has done this and can direct you, Tony. Good luck.

Bill

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Fitting from head to tank split - source?

by Tim kintz
(Quinlan ,Texas ,Hunt)

Fitting from head to tank split it has three hook ups where can I get one?

I have a Clarke pancake champ the fitting from compressers to tank that has spring inside split apart where can I find one?
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Tim, it is a bit hard to tell from your post just where the problem is, but I am guessing that what you are describing is the self destruction of the compressor check valve where the air line from the pump enters the tank?

I also suspect that one of the ports on this part has the air line going over to the unloader valve?

Getting exactly the same parts will be tough. Getting parts such as a replacement tank check valve should be fairly easy, as a tank change valve is that, a tank check valve.

So, it were me, I would acquire a one way check valve that fit the tank. Into the port that doesn't thread into the tank I would install a Tee, and from the tee one line would be plumbed form the pump head, and the other line would go over to the unloader.

If you visit any professional compressor repair location I suspect they will have lots of one way valves, and so too should a good plumbing shop.

Cheers,

Bill

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