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Air compressor Hodge podge

Shadrock

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Joined
Apr 19, 2013
Messages
22
After about 19 years of use the air tank on my Rol-Air wheel barrow compressor (Model 5715K17) took out. It started leaking from the bottom of the tank, yeah I know I didn't drain the tank as I should had...

It's a single stage 1.5 hp motor with 7-10 cfm compressor. I'd like to use it for my residential garage at my house. Extremely quiet and doesn't draw much power. I mounted it to a 60 gallon tank I acquired and plan to use it in my garage.

Any one see any problems with using the old compressor and motor on a much larger tank? - other than it being slower to fill up...

 
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jakemac

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May 21, 2013
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New England
Since the motor and pump will be cycling longer than it has been, keep an eye on it for overheating. Make sure your wiring isn't getting too hot as well.
 

Boilerhouse

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Mar 20, 2012
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Muskoka
I see no problems at all. The motor starts less often and that should be better for it. If the compressor does put out about 10 cfm, I would say the new tank is better sized for that compressor vs the old tank.
 

larry_g

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Apr 28, 2007
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Location
oregon
A couple of things I would do is;

Make sure that the pressure relief valve is the correct one for a single stage pump.

Check the current draw on the motor. 1.5 hp does not equal 7-10cfm. More like 5-6cfm

Set the cutout at 125 psi. Single stage pumps are sometimes run to 150 psi and struggle to get there. You have an old pump and it should make 125psi pretty fast but pay attention to the time it takes to go from 125 to a higher set point, if you have it set higher.

lg
no neat sig line
 
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deberly12

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Jun 7, 2017
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Lebanon County, PA
Looks nice... Like others said watch duty cycle. (% of time running) .... I have been considering a Hodge podge compressor of my own. I have a huge triple cylinder compressor and motor for it. But it is on top of only like a 20 gal tank. I picked it up for 40 bucks at a friend's farm auction. He swore it worked well. My biggest problem. Is going to be sound....I can't imagine how loud that will be lol

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md21722

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Nov 30, 2015
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Location
Mt Juliet, TN
If it works for you, then run it until it blows and then change it again with another used find. The cheap pumps weren't made to run for long periods of time, and it probably takes 15-20 minutes to fill that tank. 1.5 HP is around 6 CFM. 3 HP is around 10-12 CFM. General rule of thumb is 3-4 CFM / HP. People blow up the 3.x HP 60 gallon pumps all the time because they are Chinese junk & folks don't bother changing the oil. Wear happens when people use them all day everyday in production environments. Otherwise they are more likely to break than wear out. I've seen the 3.x HP units used for painting there was so much paint dust and such a poor air filter the inside of the pump was coated with pink dust (what color apparently the PO was using when it let go). For occasional Joe homeowner just drain the tank and change the oil once a year. If you aren't into maintenance try synthetic.
 
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Shadrock

Member
Joined
Apr 19, 2013
Messages
22
Wanted to thank everyone for replying. Ya pointed out some stuff I didn't think to look at. The motor can be rewired to run on 240, so I think I'll go ahead and do that since it's available at the compressor location.

Since the motor and pump will be cycling longer than it has been, keep an eye on it for overheating. Make sure your wiring isn't getting too hot as well.
Haven't turned it on but once. Going from completely empty, it does get warm when I fill it up.

I see no problems at all. The motor starts less often and that should be better for it. If the compressor does put out about 10 cfm, I would say the new tank is better sized for that compressor vs the old tank.
I'm guessing it's closer to the lower of the advertised end and with the age/wear probably less. Like most things, advertised is usually exaggerated for sales.

A couple of things I would do is;

Make sure that the pressure relief valve is the correct one for a single stage pump.

Check the current draw on the motor. 1.5 hp does not equal 7-10cfm. More like 5-6cfm

Set the cutout at 125 psi. Single stage pumps are sometimes run to 150 psi and struggle to get there. You have an old pump and it should make 125psi pretty fast but pay attention to the time it takes to go from 125 to a higher set point, if you have it set higher.

lg
no neat sig line

*Didn't know about the difference between the pressure relief valves. I'll look it up.
*I bet you're correct on the cfm.
*It is set up for 150 and it does take a while to go from 125 to 150. I think I'll lower it
Looks nice... Like others said watch duty cycle. (% of time running) .... I have been considering a Hodge podge compressor of my own. I have a huge triple cylinder compressor and motor for it. But it is on top of only like a 20 gal tank. I picked it up for 40 bucks at a friend's farm auction. He swore it worked well. My biggest problem. Is going to be sound....I can't imagine how loud that will be lol

Sent from my XT1635-01 using Tapatalk

The beauty of this one is that I can stand right next to it and carry on a conversation without raising my voice. Should be very quiet once I stick it outside.

If it works for you, then run it until it blows and then change it again with another used find. The cheap pumps weren't made to run for long periods of time, and it probably takes 15-20 minutes to fill that tank. 1.5 HP is around 6 CFM. 3 HP is around 10-12 CFM. General rule of thumb is 3-4 CFM / HP. People blow up the 3.x HP 60 gallon pumps all the time because they are Chinese junk & folks don't bother changing the oil. Wear happens when people use them all day everyday in production environments. Otherwise they are more likely to break than wear out. I've seen the 3.x HP units used for painting there was so much paint dust and such a poor air filter the inside of the pump was coated with pink dust (what color apparently the PO was using when it let go). For occasional Joe homeowner just drain the tank and change the oil once a year. If you aren't into maintenance try synthetic.

Good info, the oil does need changing...
 
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