Hartel HEH10 problem [RE-wrenches]

Todd Cory, Mt. Shasta Energy Services toddcory at finestplanet.com
Sun Jan 7 10:20:41 PST 2007


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Carl,

I have heard about this problem before. Generally running any motor PV 
direct requires an LCB. I have a Hartel MD10HEH running PV direct with 
an old sunselector LCB in series on my personal SDHW system. I have 
never once have had a starting problem with this pump or the Hartel 
brush model this brushless pump replaced.

Todd


Carl Hansen wrote:

>I could use some feedback on a problem I'm having with an Hartel pump, I'm using it as I frequently do on a Solar space heating systems primary loop. Its running PV direct off of a 30 watt panel but the problem is clearly with the pump. When it stops it cannot start again unless I give the impeller a push, it then starts and runs fine until it stops again due to a cloud or night fall. It will not restart itself. Upon testing the voltage at the pump in full sun with the pump connected I read open circuit volts of the PV panel, there is something internal to this pump motor that is malfunctioning has anyone else experienced this?  
> Thanks
>    Carl Hansen
>[Non-text portions of this message have been removed]
>
>  
>


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