Aquahot PM and start/stop of new pump

[David Brady]

Thanks for the tip Ralph, I'll definitely look into it.

David Brady
'02 LXi, Smokey
NC

Ralph L. Fullenwider wrote:
>
> Good morning everyone:
>
> Earlier this year I had an Aquahot hot water problem on a '95 Bird. Low
> flow was the symptom. I shut off the incoming cold water source, drained
> the hot water side and took the hot water input and output fittings
> apart.
> Then using an old Par pump, I pumped in 1 gallon of vinegar until it
> started to flow out of the output side then shut the out put valve off
> while still pumping and let the Par pump shut off at it's 40 psi
> point, un
> plugged the Par pump and walked away form about 5 hours leaving the
> vinegar
> to sit static.
>
> Returning to the Aquahot after 5 hours, I put the output hose into a
> container, ran a cold water source to the input side and started the pump
> and opening the valves. The solution coming out was blue/green in
> color. I
> completely flushed the system with fresh water until the color of the
> water
> was clear. Then hooked the lines back up and started the water running in
> the coach. No more lack of flow problem.
>
> This procedure should be added to the yearly PM schedule. The Aquahot hot
> water is an heat on demand system and the 3/8 copper tubing wrapped
> around
> the heat source will scale and start to plug the anti scald valve.
>
> This may also have something to do with a present problem with the 5.7gpm
> 65 psi pump run/stop/run/stop. I noticed this happening on the one I
> installed in my coach and I found that I had a slight blockage on the out
> put side. When I found that problem and repaired it, I had no more
> problem.
> Just some thoughts on that.
>
> Safe travels,
>
> Ralph and Charolette Fullenwider
> 84FC35
> Ralph's RV Solutions, Duncan, Oklahoma
>
>
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