Re: (ET) 1A contactor needed--was lost speeds 2 and 3

[Christopher Zach <czach computer org>]

tbamc wrote:
> In my attempt to get the middle and high speeds back in my E12, I've 
> found that apparently contactor 1A is bad.  The coil measures 36V when 
> in speed 2 and the large lugs read 1.5V, even after removing and 
> cleaning all contacts.   Also checked the resistors up front, and 
> cleaned all those contacts.  .  I'm GUESSING that if I have 36V at the 
> coil, and don't have ZERO V at the leads to the resistors, my contactor 
> is bad?  Bypassed the contactor completely and now have what appears to 
> be speed 3.  Previously I had tried pressing the power pulse button when 
> the lever was in the high speed position and the motor was turning at 
> low speed but this made no change.  I would have thought this was 
> equivalent to bypassing the 1A contactor?  (PP button checked OK.)

Well, pressing the power pulse switch will bypass 1a/2a by energizing 
the contactors. The switch is not big enough to directly bypass the main 
motor current :-)

EVParts has the contactor for around $30 or so. Given that it's a real 
pain to pull that out and put a new one in, I'd get a new one.

Chris