Hi Graham,
Hope all is well.
Greg from GRT rang me tonight and it seems as though I have a faulty unit.
He has mailed me a replacement out today. Very nice helpful guy.
There was one thing I meant to ask him but I am sure you have the answer.
For some reason my owner manual does not cover the oil pressure guage
readings(on the EIS). Most of the warning parameters activate the warning
lamp for an over temperature condition. Would I be right in thinking that
with the oil pressure the light stays on until the selected pressure is
reached. I noticed when I keyed in 62psi which is the maximum pressure
(secified by Rotax), the warning lamp stayed on all the time.
Can you confirm that my assumptiion is correct.
Carl Pattinson
----- Original Message -----
From: "Graham Singleton" <grasingleton@avnet.co.uk>
Subject: Re: Grand Rapids EIS problem !
> >Unfortunately we have hit a problem with our Grand Rapids EIS which we
> >have been unable to solve. Both the CHT and EGT displays dont seem to
> >work. We get a constant reading of approximately 25C or 80F (depending on
> >which is selected Cor F) and this does not change regardless of the
> >temperature of the probes.
> >
> >We have checked for continuity of wiring up to the point of the D
> >connector which enters the unit at the back and all seems to be OK. The
> >unit is properly earthed with relation to the All indications at the
> >moment suggest a problem with the unit.
>
> Hi Carl,
> Never had a problem with one before. You could test the sensors on a
> sensitive meter. The EGT should show a very small voltage when heated in a
> flame. I think the CHT sensor is a resistance. Heat in boiling water and
> look for a change.
>
> Best plan would be to ring Greg Toman and ask his advise. He can usually
> diagnose these things over the phone and is very helpful. Michigan is
about
> 6 hours behind us I think.
> Graham
>
>
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