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WILL THE WELD DAMAGE THE SUBSTRATE?
No! Some slight discoloration of the outer coat may occur but it is not normally
visible to the naked eye, and does not affect the insulation properties of the laminate.
WHAT RIBBON CAN I USE AS THE REPAIR AGENT?
SEETRAX CU series is the ribbon we recommend. It is a reel copper ribbon with just
a "flash" of tin-lead plating on it to prevent oxidation.
ARE THE REPAIRS TO PCB’S BY WELDING ACCEPTED BY WORLD SPECS?
Yes! BS6221 and some others, allow this type of repair.
WILL I BE ABLE TO SEE THE REPAIR?
If the repair is coated at a later stage, by tin-lead or similar deposit, it is unlikely if
viewed with the naked eye. Under 5X magnification, it may be visible.
HOW DO I KNOW WHEN THE ELECTRODES NEED TO BE CLEANED AND
HOW DO I GO ABOUT IT?
Epoxy deposits can be cleaned off the electrodes with fine sandpaper (600 grit,
supplied). Any deposits between the electrodes can be cleaned by sliding a piece of
paper, not sandpaper, between them. Cleaning is required only when a weld is
unsatisfactory, the electrodes are not firing or when the contaminator alarm advises
you.
WHAT ARE THE ELECTRODES MADE OF?
Molybdenum Carbide.
HOW ABOUT MAINTENANCE?
The
CIR-KIT WELD 450
has been designed to run with very little maintenance. In
fact, an occasional clean of the electrodes is just about all you need to do on a day-to-
day basis.
See page 27.
