Hello Technetters


     We have an off again on again problem with component markings ( mostly
SOIC's, mostly from one supplier) being removed during  our cleaning cycles.  
One of our customers insist that all marking must remain on his products.  He/
we must replace components or add a label and get a wavier for each incident.

    Each board is cleaned 3 times.
1st time after smt reflow.
2nd time after wave solder.
3rd time before shipping.

     We have a Westkleen in line system.
     We use Armakleen 2002 in the wash sections.
     temp. in the wash is 160f. @ 50 psi, speed 2 fpm.

Questions:
     Anyone else have this problem?
     What have you done to correct it?
     Is there a parts marking spec?

Thanks in advance for your help.

Phil Belliveau
Sippican, Inc
508-748-1160 x379 
     
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PhilBelliveau
Sippican Inc. 
7 Barnabas Road 
Marion Ma, 02738

(508) 748-1160