This sounds like a regeneration system for a KMn04/NaOH bath used to texture
plastics and circuit boards(desmear)to promote adhesion of catalyst and
electroless plating. The KMn04 breaks down during use and forms manganese
dioxide. The regeneration system using electrical current(rectifier)and
electrodes converts it back to active KMn04. Adjusting the rectifier output
amperage and on-time determines how much and how fast it regenerates. Most
regeneration systems have a max amperage which coupled with the loading
factor of work in the bath determines these settings.

If this is truly what you are using; in the past we would typically run at
80-90% rating for amps and leave it on 12hrs for every 8hrs of operation.
This was for multilayer PCB's after initial desmear. Of course everybody's
loading factors and processes are different, if unsure you can simply leave
it on, however this consumes electrical power. 
I would work with the supplier to determine the acceptable manganese
impurity range vs the active KMn04 range,then size the regeneration unit and
amperage/rectifier according to your work load.

	
regards
	
Michael Barmuta
	
Staff Engineer
	
Fluke Corp.
	
Everett WA
	
425-446-6076
 

-----Original Message-----
From: Hans Shin [mailto:[log in to unmask]]
Sent: Monday, March 26, 2001 12:59 PM
To: [log in to unmask]
Subject: Re: [TN] en las concentraciones de trabajo.


Loosely translated,

"The same way it will adjust the oxamat as a function of the concentration
of manganese present in the bath.  This implies to make an analysis on
Fridays when the work is done with the line in order to decide whether the
apparatus should be left functioning during the weekend, if you need to
modify the current work or if it's necessary to turn it off.  Partially with
the production of multilayer test coupons will be processed for the desmear
line in order to find the differences as far as the bond cover in the
Neopact process."

-----Original Message-----
From:   Fernando Gómez [SMTP:[log in to unmask]]
Sent:   Monday, March 26, 2001 7:36 AM
To:     [log in to unmask]
Subject:        [TN] en las concentraciones de trabajo.

Así mismo se ajustara el oxamat en función de la concentración de manganato
presente en el baño. Esto implica un análisis a efectuar los viernes cuando
se acabe de trabajar con la línea para decidir si hay que dejar el aparato
en funcionamiento durante el fin de semana, si hay que modificar la
corriente de trabajo o si hay que apagarlo.  Paralelamente con la producción
de multicapas se procesaran cupones de test por la línea de desmear para
establecer diferencias en cuanto a la bondad de cubrición en el proceso
Neopact.

----------------------------------------------------------------------------
-----
Technet Mail List provided as a free service by IPC using LISTSERV 1.8d
To unsubscribe, send a message to [log in to unmask] with following text in
the BODY (NOT the subject field): SIGNOFF Technet
To temporarily halt delivery of Technet send the following message: SET
Technet NOMAIL
Search previous postings at: www.ipc.org > On-Line Resources & Databases >
E-mail Archives
Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional
information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700
ext.5315
----------------------------------------------------------------------------
-----

---------------------------------------------------------------------------------
Technet Mail List provided as a free service by IPC using LISTSERV 1.8d
To unsubscribe, send a message to [log in to unmask] with following text in
the BODY (NOT the subject field): SIGNOFF Technet
To temporarily halt delivery of Technet send the following message: SET Technet NOMAIL
Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail Archives
Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional
information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315
---------------------------------------------------------------------------------