[Central-Electronics] Repair of a CE 600L, telephone relays

[davidgriffin at hvc.rr.com]

Well, the relay served up an intermittent problem for me when my 20A 
would from time to time lose the ability to transmit.  Whenever I would 
begin circuit tracing, the problem would disappear.  Finally, one 
evening I noticed that the n/o contact did not move when hit by the 
common contact as the relay picked, indicating a very questionable make 
of the contacts.  Bad memories dissuaded me from trying to bend or 
adjust the strap, but I did think a light burnish would help.  It did 
and I've never had the problem since.
Dave n2chi


Tisha Hayes wrote:
> Those relays bring back bad memories of maintaining telephone 
> equipment. It was nearly a full-time job to maintain racks of those 
> relays. The noise of thousands of those relays activating and 
> deactivating was quite distracting and a bit overwhelming at times.
> Definitely, a burnishing tool is your friend. We could service the 
> relays without removing power from the rack (telephone exchanges). I 
> definitely would not try that with any CE equipment.
> Thank goodness for the newer telephone switches where the only noise 
> is a few hundred rack-fans and the air conditioning unit.
> Maybe someday I will go through the bother of replacing the relay with 
> a mercury wetted type.
>
> -- 
> Factory certified interoceter repair center.
>
> "Remember, use only genuine interoceter parts."
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