ESAB LAW 510 Service Manual page 42

Changes introduced with effect from machine number 550 . . . . . .
Suppression circuit board AP2 introduced in LAW 400 and LAW 500.
Changes introduced with effect from machine number . . . 642 . . . .
New mounting position for the water pump introduced in all machines with water cooler.
Changes introduced to LAW 400 with effect from machine number 550 644 . . .
New thyristor module 0456 536 001 (Semikron SKMT 91/04D).
Changes introduced with effect from machine type LAW 410 and LAW 510
New design of the main transformer, new ordering number for the main transformer, see the
spare parts list.
LAW 400/500 is repalced by LAW 410/510
The new main transformer has to be used as a spare part for LAW 400 and LAW 500.
Changes introduced to LAW 400/410 with effect from machine number 701 . . .
New circuit board (0486 480 880) for pulse welding together with wire feed unit MEK 4SP
Changes introduced to LAW 500/510 with effect from machine number 652 . . .
New circuit board (0486 480 880), no change in function, can not be used for pulse welding
with LAW 500/510.
Changes introduced to LAW 400 with effect from machine number . . . . . . . . .
New thyristor module 0456 536 001 (Semikron SKMT 92/04D).
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