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Re: Re: Automatic watering



Do you have the valve the right way round?  It may be closed by the water
pressure (but obviously only if the water is flowing the right way)

Mal



----- Original Message -----
From: "Rob Lamb" <rjl@xxxxxxx>
To: <ukha_d@xxxxxxx>
Sent: Wednesday, December 03, 2003 3:49 PM
Subject: [ukha_d] Re: Automatic watering


> Tried that but to no avail. Can't think of what to do next!
>
> Rob
>
> --- In ukha_d@xxxxxxx, "Tim Fletcher"
<timfletcher@b...>
> wrote:
> > reverse the polarity to close the valve?
> >
> >   ----- Original Message -----
> >   From: Rob Lamb
> >   To: ukha_d@xxxxxxx
> >   Sent: Wednesday, December 03, 2003 11:48 AM
> >   Subject: [ukha_d] Automatic watering
> >
> >
> >   I need a little help with a new project. Up until now I've used
> a
> >   standalone Gardena water computer to control my irrigation
> system
> >   but as this now seems to have failed and I now also have
> Homevision
> >   I thought I try to control the valve part of the water
computer.
> >   Taking the water computer apart there are just a pair of wires
> that
> >   lead to what looks like an electromagnet on the valve. Connect
> 9V DC
> >   to these leads (that's the same as the battery the computer
> used)
> >   and hey presto water flows through the valve. But here's the
> >   problem. Disconnect the power and - the water still flows! Any
> ideas
> >   on what I'm doing wrong or what to do next?
> >
> >   Regards,
> >
> >   Rob
> >
> >
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> >
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> >
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>
>
>
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>
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