Improving The Fat Boy Roof Cleaning Pump !

62 posts in this topic

Posted

A question was asked once, and never really answered, would 2 accumulators help out better then 1 ?

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Posted

Yes two would be better than one because you double your compression area (air space in the top chamber) but they would both have to be installed on the same line.  Having a larger one is better.  Theoretically you could string 10 small ones together and have the same amount of compression space as one large one BUT then you would have 20 more fittings and hose clamps and possible leaks.  It would cost a fortune. The other side of the coin is to just size your nozzle large enough so that the pump runs constant.

 

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Posted

Yes two would be better than one because you double your compression area (air space in the top chamber) but they would both have to be installed on the same line.  Having a larger one is better.  Theoretically you could string 10 small ones together and have the same amount of compression space as one large one BUT then you would have 20 more fittings and hose clamps and possible leaks.  It would cost a fortune. The other side of the coin is to just size your nozzle large enough so that the pump runs constant.

 

Or, do this http://roofcleaninginstitute.org/topic/500-how-to-run-a-12-volt-roof-cleaning-pump-wo-a-battery/

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Posted

Hi all! I'm getting my winter maintenance/upgrade list prepared and I'd really like to try out the "hot water accumulator upgrade", but all the tanks I've seen say that they have a polypropylene bladder (which is what the SH would be contacting directly) with a butyl diaphragm. Do you think the polypropylene would hold up on? (I ALWAYS rinse with 20-30 gallons of water after EVERY job)

Thank you!

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Posted

Hey Atlas, The polypropylene should be fine. A lot of the fittings used in this line of work utilize poly.

Fiberglass reinforced poly is widely used.

Mike

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Posted

Hi all! I'm getting my winter maintenance/upgrade list prepared and I'd really like to try out the "hot water accumulator upgrade", but all the tanks I've seen say that they have a polypropylene bladder (which is what the SH would be contacting directly) with a butyl diaphragm. Do you think the polypropylene would hold up on? (I ALWAYS rinse with 20-30 gallons of water after EVERY job)

Thank you!

The diaphragm is the problem. Butyl is incompatible with SH. This is why the small accumulators fail. 

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Posted

That makes sense. Thanks for the info guys!

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Posted

Al9226 told me that his residential water heater expansion tank idea worked great. He said he just replaced it after three years (as scheduled maintenance) and had never had a problem or any leaks

I wentvwith a smaller one that I found on Amazon. I would have gotten a larger one, but they all had those clip connections and I couldn't use those because I'm going with a 1" line from the pump to the accumulator and I had to have threads. I'll post a picture later and a performance update once my season gets rolling.

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Posted

If you use one less than 2 gallons, let me know how it works.  It's my thinking that a larger tank makes the pump stay on longer than a smaller one.  I used the 2 gallon by hunch and it worked perfectly so I stuck with it.  You may have to play with the pressure in the tank a little.  

IMG_3253.JPG

Atlas1 likes this

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Posted

Hey Al, you're correct with the larger tank making the pump run longer and that's what allows a longer "draw down" time before cycling the pump back on.

Mike

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