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Author Topic: Pump failure after pump failure  (Read 19144 times)

allis48

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Re: Pump failure after pump failure
« Reply #15 on: March 01, 2012, 07:06:55 PM »
I forgot to mention the one new pump the motor part is running about 175 degrees and the other pump is running 199 degrees, why the diffence in temp
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RSI

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Re: Pump failure after pump failure
« Reply #16 on: March 01, 2012, 07:17:49 PM »
Did you bleed the air out of the motor end? If you don't do that they will die pretty fast.
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allis48

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Re: Pump failure after pump failure
« Reply #17 on: March 01, 2012, 07:23:04 PM »
yep even ran them awhile then rebleeded them
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RSI

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Re: Pump failure after pump failure
« Reply #18 on: March 01, 2012, 07:25:53 PM »
Did you open them up to see what happened to them?
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allis48

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Re: Pump failure after pump failure
« Reply #19 on: March 01, 2012, 07:43:22 PM »
no  I didnt open them cause they replaced them under warranty, but the dealer plugged the one in that quit all together and the impellor went out to the pump side so it looks like it has a bunch of endplay in it. what would be the best replacement pump brand and model. I would rather spend the money and get a good one than buy the cheap pumps and replace them all the time
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MD20/20

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Re: Pump failure after pump failure
« Reply #20 on: March 01, 2012, 07:44:33 PM »
which pump is on the nc250?
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RSI

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Re: Pump failure after pump failure
« Reply #21 on: March 01, 2012, 07:46:28 PM »
I am going with B&G PL36 pumps instead. They use a lot less power and pump more water. I have one of the NC pumps left that has a new cartridge in it and after that I won't be getting any more. I am hoping they will give me a decent discount on boilers without the pump.
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RSI

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Re: Pump failure after pump failure
« Reply #22 on: March 01, 2012, 07:46:59 PM »
Quote from: MD20/20 on March 01, 2012, 07:44:33 PM
which pump is on the nc250?
They use the same pump on all models.
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MD20/20

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Re: Pump failure after pump failure
« Reply #23 on: March 01, 2012, 07:57:37 PM »
200 bucks on their site.  how much is a better pump?
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RSI

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Re: Pump failure after pump failure
« Reply #24 on: March 01, 2012, 08:20:28 PM »
Quote from: MD20/20 on March 01, 2012, 07:57:37 PM
200 bucks on their site.  how much is a better pump?
What site?
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MD20/20

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Re: Pump failure after pump failure
« Reply #25 on: March 01, 2012, 08:22:55 PM »
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MD20/20

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Re: Pump failure after pump failure
« Reply #26 on: March 01, 2012, 08:28:17 PM »
it says 4148, but at checkout it is $198.
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RSI

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Re: Pump failure after pump failure
« Reply #27 on: March 01, 2012, 09:10:00 PM »
You can get a pl36 pump for close to the same price.
Otherwise if you want to stay with a wet rotor pump a Taco 0011 is also around the same price.

I would try to go with a pump that is American made. Bell and Gossett, Grundfos, Taco, Armstrong and a few other brands are mostly made in USA.

I prefer dry rotor pumps like the Bell and Gossett PL36 because they can handle dirty water and air better.
Also, Taco 2400-20-WB and Armstrong e7, e8, e9, etc are the same type pump but more expensive.
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Scott7m

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Re: Pump failure after pump failure
« Reply #28 on: March 01, 2012, 09:23:47 PM »
I agree with RSI.  Md2020 r u having trouble with yours? 

I wish I could convince all my customers to go with dry rotor pumps.
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allis48

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Re: Pump failure after pump failure
« Reply #29 on: March 02, 2012, 04:02:00 AM »
Looks like the pl36 might be a tight fit expecally when you try cramming 2 of them in there
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