https://www.es-forum.com/Help-New-central-heating-Pump-tp3536341p3538591.html
If it is a variable speed motor than you'll also need filters on the wires.
will be OK. You should be able to tell with an AM radio.
> **
>
>
>
> If it is inside a cupboard can you put multiple layers metal on the inside
> of the cupboard door somewhere between it and you? If it is a magnetic
> field from the motor you can use mu metal but that is expensive. Multiple
> layers of steel will reduce it as well. I use simple heating duct sheets
> bought at a hardware store such as Home Depot. Are there wires that you can
> put snap on ferrites on?
> --- In
[hidden email], Elizabeth thode <lizt777@...> wrote:
> >
> >
> > And also, anything with a variable speed motor puts out high emfs.
> > Maybe Stewart or someone else can answer whether this pump has
> > a variable speed motor on it. I'll bet it does. And its probably high
> > magnetic fields, if that's the case. Distance away from it is your best
> > option.
> > Lizzie
> >
> >
> >
> >
> > To:
[hidden email]
> > From: sandreas41@...
>
> > Date: Fri, 25 Nov 2011 19:04:57 -0800
> > Subject: Re: [eSens] Help! New central heating Pump
> >
> >
> >
> >
> >
> >
> > Hi Betty,
> > > central heating pump in a corner cupboard)
> > How close is it to your living or sleeping area?
> >
> > > it would be a 240 volt pump the same as the old one which was more
> than 20 plus years old.
> > Yeah, sure. Same as the old one. Made in the same country with the same
> > windings and electric control board. Sure...
> >
> > > My question is does anyone have any suggestions as to how I can shield
> or reduce the emf? Any and all suggestions would be really welcomed.
> > >
> >
> > Can you tell if the problem is a magnetic field from a motor, or a RF
> > problem from some electronics?
> > or even a dirty electricuity kind of RF problem is another possibility.
> >
> > Quite frankly, I get better results using Avoidance, and Replacement of
> > components until satisfactory. In this case, I would need to know more
> > about the pump to come close to a "final answer" for you.
> > I doubt will be easy to replace the pump with a quieter model... and
> > while you may achieve some reduction with grounded carbon absorber and
> > aluminum foil, etc. I doubt it wll be the same.
> >
> > My best advice is to ask how you feel on the opposite side of the house?
> > to determine the range of the problem, may help identify the specific
> > irritant.
> >
> > Stewart
> >
> >
> >
> >
> >
> >
> > [Non-text portions of this message have been removed]
> >
>
>
>