RE: (ET) e-15 eats reverse relays

["Pieter Litchfield" <plitch attglobal net>]

Just to bring you all up to date:  I did talk with Bill Gunn today.  He 
gave
me some mechanical checks to perform (5!!) .  These involve checking to see
if VDR-1 is dead (likely to be obvious discoloration, cracks,etc), see if
involved circuits have tight connections, and see if the speed control 
lever
has faults- reverse reply not kicking in/out soon enuff and power engaged
before reverse relay engaged.  So I have some mechanical things to check
out, and it will be a few days before I can get to it.  However, I will let
you all know the outcome, if any, so we can all "grow" by my experience.
This is not an uncommon problem.

By the way, Bill said to be sure in ANY CASE that I wait for the motor to
come to a full stop before reversing.  All of us should listen to these
words of wisdom.

Pieter


-----Original Message-----
From: owner-elec-trak cosmos phy tufts edu
[mailto:owner-elec-trak cosmos phy tufts edu]On Behalf Of Elie, Larry
(L.D.)
Sent: Monday, June 10, 2002 10:34 AM
To: Discussion list Electrac tractor; Tom G
Subject: RE: (ET) e-15 eats reverse relays


In layman's terms; I think the circuit is ringing.  I work with large
inductive loads.  Try to turn them off to quickly and there isn't anywhere
to dump the current; the contacts, or controls down-wind of them may fry.
An active device (Varistor) may help, or even a passive (Resistor) may
absorb them IF you know how much energy is involved.  I'm surprised GE
didn't take care of this.  I'm about to rebuild an E-15 and will look into
it.

Larry Elie