Bruce
I have a standby Generac 20KW generator running on natural gas on a line from the street. I am having some starting issues right now and have been told that the governor on the gas line is bad. I have also been told that the governor I have installed currently is not the correct one and is normally used for gas grills not generators. Problem is, I had the gen originally installed by a reputable company and that's what they put in. It's a Pietro Florentini, model number FMF3T05230AUYR, I have attached photos. I need some advice please, is this the right part and if not what is a good replacement? Looks like a pretty straight forward repair as long as I get the right governor, thanks in advance for the help.

[IMG][URL="http://s302.photobucket.com/user/Rivaresearch/media/IMG_8588_zpslnzd8rzf.jpg.html"][/URL]

[IMG][URL="http://s302.photobucket.com/user/Rivaresearch/media/IMG_8587_zps5hvbqfkg.jpg.html"][/URL]
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Canada_Guy
In case someone is trying to search this part#, the OP has an extra digit in the number in his post.

Try [SIZE="4"]FMF3T05230AUYR[/SIZE]

I searched but couldn't find any data (BTU rating) on it.
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Bruce
Canada_Guy;52623 wrote:
In case someone is trying to search this part#, the OP has an extra digit in the number in his post.

Try [SIZE="4"]FMF3T05230AUYR[/SIZE]

I searched but couldn't find any data (BTU rating) on it.
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Thank you I just saw that and corrected.
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UPS
Canada_Guy;52623 wrote:
In case someone is trying to search this part#, the OP has an extra digit in the number in his post.

Try [SIZE="4"]FMF3T05230AUYR[/SIZE]

I searched but couldn't find any data (BTU rating) on it.
.


Searching for the model number F30052 comes up with this - probably close enough:

[URL="http://sminc.net/price_sheet.php?file=Pietro_Fiorentini_Governor_H01.PFG.0317.pdf"]http://sminc.net/price_sheet.php?file=Pietro_Fiorentini_Governor_H01.PFG.0317.pdf[/URL]
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Bruce
UPS;52625 wrote:
Searching for the model number F30052 comes up with this - probably close enough:

[URL="http://sminc.net/price_sheet.php?file=Pietro_Fiorentini_Governor_H01.PFG.0317.pdf"]http://sminc.net/price_sheet.php?file=Pietro_Fiorentini_Governor_H01.PFG.0317.pdf[/URL]


So do you think it's correct, should I just order the same one? Unfortunately I have no idea about this.
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murphy
The first step before replacing the regulator is to measure what pressure it is allowing through at no load and at full load. It is adjustable but you need a manometer to do it.
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Bruce
murphy;52627 wrote:
The first step before replacing the regulator is to measure what pressure it is allowing through at no load and at full load. It is adjustable but you need a manometer to do it.


I had someone check it with a manometer, they said it was bad. I have no pressure coming through at all. I just want to make sure what I had was correct or not. If Im going to replace it, I want to make sure I get the correct part.
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Skip Douglas SkipD
Bruce;52628 wrote:
I had someone check it with a manometer, they said it was bad. I have no pressure coming through at all. I just want to make sure what I had was correct or not. If Im going to replace it, I want to make sure I get the correct part.
Though the device shown above is called a "governor" by its manufacturer, the proper term for such a device in the U.S. is "regulator".

Regulators for gas pressure have two basic numeric specifications that must be appropriate for the application. The first is the pressure range. This involves the allowable input (supply) pressure range that is allowable and the (typically adjustable) output pressure that can be produced by the regulator. The other important specification is the flow rate range that the regulator can handle. This specification could detail the minimum flow rate but almost always provides the maximum flow rate - both while controlling the output pressure to specified level. You have to know how much gas could be used in a unit of time (by the generator in this case) and make sure that the regulator can handle at least that much. In the photograph above, I see no flow rate specification. Ambient temperature range could also be an important specification to consider when choosing a fuel regulator.
Skip Douglas
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MacL
Yes, you need a manometer, familiarity with gas supply. If that top really has a hole in it, the spring is probably rusted.
State your problem, not your diagnosis.
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