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Longevity of small air commpressors

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Alan K

06-26-1999 15:22:54




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I have a SpeedAire cast iron type 4 HP air compressor. It seems faily heavy duty. My question is - Can I run it steadily all day using it for light sandblasting etc.? I keep it filled with regular non-detergent 30 Oil.




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Ned

07-20-1999 23:10:34




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 Re: Longevity of small air commpressors in reply to Alan K, 06-26-1999 15:22:54  
It would depend on the duty rating of your unit.
I've seen 60%, to 100% ratings. I have a Speedaire with 100% duty rating @100psi. It should state somewhere on unit or owners man. Regardless of rating, I would make sure the compressor gets plenty of fresh air and in shade.
Speedaire is a good brand in my book. I've used mine for many years without any problems. Good luck, Ned



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Roger Prosper

07-23-1999 11:20:55




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 Re: Re: Longevity of small air commpressors in reply to Ned, 07-20-1999 23:10:34  
You're already ahead of the game by not using an oilless machine (absolute rubbish!). Speedaire was a reliable machine, but keep the oil level up! Many smaller compressors are running too fast these days as manufacturers are forced to compete with a lot of foreign underpriced junk. Consequently, they make smaller capacity machines put out more air by running them faster. This can use up oil in the sump pretty quickly, even with good rings. Hard use can use up the reed valves in a Speedaire (Campbell Hausfeld) pretty quickly. Be aware that it is common on some of these models for the screws holding the reeds to come loose and fall onto the piston crown. This can hole a piston or at least, jam a ring by collapsing the piston over the ring groove. Luckily, these pumps are cheap to repair and parts are plentiful. A wise precaution would be to pull the head and Loctite these screws (red Loctite please to handle the heat). I have worked on Speedaire pumps that were in pristine shape, even after 25 years of service, so, treat it right,(regular oil changes) and it should last ok.

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Mike Maione

09-06-2000 14:27:33




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 Re: Re: Re: Longevity of small air commpressors in reply to Roger Prosper, 07-23-1999 11:20:55  
A contractor friend of mine has a 120 psi Speedaire air compressor with a Honda 5.5 HP engine (GX160). He bought it about 8 years ago and now it is leaking oil into the guage and other places. He told me that the only place he heard of to fix it was in Chicago. We are in northern NJ. Does anyone know a place nearby to get parts or a place to repair it.



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Mike Maione

09-06-2000 14:31:02




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 Re: Re: Re: Re: Longevity of small air commpressors in reply to Mike Maione, 09-06-2000 14:27:33  
A contractor friend of mine has a 120 psi Speedaire air compressor with a Honda 5.5 HP engine (GX160). He bought it about 8 years ago and now it is leaking oil into the gauage and other places. He told me that the only place he heard of to fix it was in Chicago. We are in northern NJ. Does anyone know a place nearby to get parts or a place to repair it.



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Pat

08-23-2000 11:33:03




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 Re: Re: Re: Longevity of small air commpressors in reply to Roger Prosper, 07-23-1999 11:20:55  
I recently changed out the pressure switch on an older model 3z355h, after doing so it now won"t stop running automatically. It blows the safety valve instead. I read about adjusting the range springs but it is not specific about where these are!! Please help! Thanks P



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Jack Jardel

08-28-2000 21:25:12




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 Re: Re: Re: Re: Longevity of small air commpressors in reply to Pat, 08-23-2000 11:33:03  
I have a Speedaire 3Z-323 and the adjustment for the pressure cutoff is in the electrical box. On mine the box is mounted to a black plastic thingy
that also houses the pressure relief valve.
It's the only screw that looks out of place, the rest of them have wires attached. It's also a smaller screw. When you turn the screw in it cuts off at a higher pressure & turning it out, counterclockwise, lowers the cutoff pressure. Start off by turning it out a lot maybe 3 turns or so.
I need the black plastic fitting that screws into the tank.It holds the elec. box,the press. gauge, the relief valve, a shutoff valve and the hose connection. Mine's cracked & leaks. Any idea where I can find one?
Thanks..... ..... ..Jack

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