I've never seen a batch cleaner yet that would remove RMA from SMT
assemblies. I've worked with both Batch cleaners and in-line cleaners
and have learned that batch works great with thru-hole components, but
you really need an in-line cleaner to clean under SMT parts.  Good Luck!

>-----Original Message-----
>From:  Devitt, Kenneth [SMTP:[log in to unmask]]
>Sent:  Wednesday, August 12, 1998 8:33 AM
>To:    [log in to unmask]
>Subject:       [TN] Batch cleaning of SMT RMA fluxes
>
>To TechNet,
>
>We are currently running a dishwasher type batch cleaner
>(AqueousTechnologies Model  RU400) and Kyzen XJN (30% concentration) are
>having difficulties removing flux residues from our SMT assemblies with RMA
>solder paste (ESP 63/37 RMA flux).
>
>Our current parameters are 155 F for wash chemistry for 9 Minutes,   100 F
>water rinse for total of 15 minutes, and 12 min. dry @ 120 F.
>
>We would like to hear from Techneters who are successfully using batch
>cleaners to remove RMA fluxes in terms of machine mfr., chemistry type, wash
>and rinse parameters.
>
>thanks in advance,
>
>Ken Devitt                              Tom Long
>[log in to unmask]        [log in to unmask]
>973-284-3880                    973-284-2786
>
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