Re: (ET) ET No Go

["RJ Kanary" <rjkanary nauticom net>]

Yours should be an E- 12 S,which is , for our purposes, an E-15 AA through
GA model, with many components missing.
       Since this has a field reversed traction motor control, the first
place that I would look for trouble would be the reversing relay.The
varistor for the field should be on it's own little board. The E-12S does
not have a Card #3, where it would normally live, since the E-12 S has no
provisions for field weakening.
        Card #1 is the board where the time delay, PTO, and RTN® functions
are found. You will notice there is room for many components that are not
there. Those other functions are exclusive to the E-15, such as field
weakening, for the four other speeds that the E-12 S does not have.
    I hope that this can head you in the right direction.


RJ Kanary @ Bandi Bros. Inc.
Member TRNi  Since 1998
ASE® Certified Master Auto Technician
Member Tech Line Associates Since 1987
rjkanary nauticom net

----- Original Message -----
From: "SteveS" <ssawtelle fcc net>
To: <elec-trak cosmos phy tufts edu>
Sent: Thursday, February 07, 2002 11:29 AM
Subject: Re: (ET) ET No Go


> Thanks for the suggestions.
>
> I forgot to mention that the motor spins free and quiet, so I discount 
> the
> brake and transaxle, so sounds like I should look at the field circuit.
>
> The schematic I have shows a Varistor/Diode assembly. Is that part of the
> circuit board behind the control panel that has a bunch of SCRs and 
> diodes
> on it? The schematic doesn't show all the other parts on the board, so
maybe
> I have a newer or older model.
>
> Guess its time to trace thru the wires.
>
> - Steve
> E12
>
>
> ----- Original Message -----
> From: "David Roden (Akron OH USA)" <roden ald net>
> To: <>
> Sent: Thursday, February 07, 2002 10:46 AM
> Subject: Re: (ET) ET No Go
>
>
> > On 6 Feb 2002 at 21:17, SWS wrote:
> >
> > > - Are the 10 and 49 wires the field connections?
> >
> > I don't know about the numbers (don't have my manual handy), but the
> > smaller-diameter wires going to the motor are the field connections.
The
> > larger ones are the armature connections.
> >
> > The symptoms you describe could be caused by an open connection in the
> > field circuit.  This could be the reversing relay, dirty connections, 
> > or
> > even an open field in the motor (unlikely).
> >
> > They could also be caused by a mechanical problem such as locked brakes
> > or a seriously munged transaxle.
> >
> > I recommend obtaining the Homeowner's Service Manual from Bill Gunn.  
> > It
> > has excellent troubleshooting flowcharts.  You'll also need a 
> > multimeter
> > (analog or digital).  You can get a suitable one for $40 or so at Radio
> > Shack.
> >
> >
> > David Roden - Akron, Ohio, USA
> > 1991 Solectria Force 144vac
> > 1991 Ford Escort Green/EV 128vdc
> > 1970 GE Elec-trak E15 36vdc
> > = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =
> > Thou shalt not send me any thing which says unto thee, "send this to 
> > all
> > thou knowest."  Neither shalt thou send me any spam, lest I smite thee.
> > = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =
> >
> >
>
>