[GreenKeys] Selector Magnet Wiring Model 28 Machines

[Don Robert House]

Eugene,

The coil magnets are wired in parallel for 55 to 65 milliamps.

If there are two wires feeding the magnets there should be a strap  
between the two center screws (one on each magnet coil)  and a strap  
between the two outer screws.  The colors of the leads are normally  
ORANGE and YELLOW, which are connected on the same screws as  
indicated below...

If there are four wires feeding the magnets they start from the rear  
of the machine (or the right of the magnets if looking directly at  
the selector mechanism) in the following order:
ORANGE, YELLOW, VIOLET, SLATE.

The above of course is if no one has changed the standard wiring of  
the machine.

I can send you a photo if you desire.

Don


On 25 Aug 2006, at 9:43 PM, Eugene Hertz wrote:

Hmmm. good point. I will check it out more tomorrow. The 90 that I  
arrived at was just a random number that seemed to give good print  
with the lpr on. I will however try to find the real center of the  
"good" range to see what the most optimal number really is. If you  
are right and if there is still something else wrong, I wonder again,  
if it could be that I have some selector magnets out of phase?

Eugene


> -----Original Message-----
> From: Don Robert House [mailto:drhouse at nadcomm.com]
> Sent: Friday, August 25, 2006 09:38 PM
> To: 'Teletype Friends'
> Subject: [GreenKeys] Range setting on Model 28 and Model 35 Machines
>
> The range knob is calibrated from 0 (Zero) to 120 (Zero)
>
> The optimum setting, if the signal is correct, should fall between 50
> and 70.
>
> Settings outside of these margins indicate something else is wrong.
> Possibly the polar relay, or the loop current in one of the two loops.
>
> Don
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