power - in our place there is a lot of power problem

by JEENU JAIN
(CHENNAI)

hello,

iam having a SUGUNA 5HP air compressor 3HP motor,250 tank capacity, in our place there is a lot of power problem,3 phase current is not supplying from the TNEB side,voltage problem,
NOW MY question is in 5hp compressor if i put 2HP motor then it runs or not?
2hp motor will take load or not?

JINENDRA BHANSALI
MEENAKSHI GLASS
CHENNAI - 600112.
9380912345
9840014866
<007jb1@in.com>

_____________________
Bill says...

JEENU JAIN, you say you have a 5 HP compressor with a 3 HP motor. That, alone, seems to be a reason for problems.

Will your compressor run with a 2 HP motor? Maybe. I doubt if you will get full production out of it, and even if it does run, I expect you will be overloading the motor leading to its premature failure.

Good luck.

Bill

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Wont turn off with how i wired contactor

by j galaz
(tucson)

3 phase 7.5 hp

__________________
Bill says...

Hi J. Galaz. Unfortunately, I cannot fix your wiring issue through a website, and I make a point of not coaching people on wiring as I'm not an electrician.

If the contact is wired incorrectly, and you don't have a wiring diagram to orient the correct wiring, then you need an industrial electrician's help.

Cheers,

Bill

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How bad did i hurt my air compressor, its not running now.

by Wendell Wheaton
(Channelview Texas)

I ran my compressor off an extenion cord were it kept tripping breaker then it started to run slow then hum then stop. I rented another one it too did the same thing until i unplug it from the cord. Then plug it in the Wall sockit were it started to run fast. So I though mine will work too but it didn't.

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Bill says...

Hi there, Wendell. Whoops!

Let's look at an example. Consider your electric motor as a reservoir that MUST keep say, 5 gallons of water in it all the time to run properly. Then, while the motor runs it uses a gallon a minute of water. Now, you supply water to that motor through a hose that can only supply 1/2 gallon a minute. It won't be long before your compressor runs out, will it?

By using a too-small or too-long extension cord, you effectively under-supplied the electric motor with electricity. When that happens, motors will run poorly, and they will overheat.

I think you have fried your air compressor motor as a result.

You need to get the motor tested.

Good luck.

Bill

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Compressor stress relief line installation?

by Dennis
(Tennessee)

Strain relief on pressure switch - http://www.about-air-compressors.com

Strain relief on pressure switch - http://www.about-air-compressors.com

Do I need to reinstall the stress relief line on my compressor? I changed the pressure switch and the hook-up is not the same. It is a reciprocating compressor, 3 H.P.
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Dennis, you don't have to do anything you don't want to do.

Of course, the strain relief attachment is there to ensure that the power cord is protected from separating from the switch if it's put under tension.

Set it up anyway you want, but if it were me, I would build some strain relief in, even if it's to make a loop and tape it to the housing so a pull on the cord pulls the tape and not the connection.

Cheers,

Bill

Comments for Compressor stress relief line installation?

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Sep 14, 2011
Stress Relief Line
by: Anonymous

I think that he is talking about the air relief valve that stops the compressor starting against pressure in the feed pipe.

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