Chicago Electric 68888 Owner's Manual & Safety Instructions page 10

Strike Test
A test weld on a PIECE OF SCRAP can be
tested by using the following procedure.
WEAR ANSI-APPROVED SAFETY GOGGLES
DURING THIS PROCEDURE.
WARNING! This test WILL damage the weld it is
performed on. This test is ONLY an indicator of weld
technique and is not intended to test working welds.
1. After two scraps have been welded together and the
weld has cooled, clamp one scrap in a sturdy vise.
2. Stay clear from underneath while you strike
the opposite scrap with a heavy hammer,
preferably a dead-blow hammer.
3. A GOOD WELD will deform but not break, as shown
on top.
A POOR WELD will be brittle and snap at the
weld, as shown on bottom.
Example Weld Diagrams
CLEAN WELDS FIRST! Stick welds will have a coat of slag over them until cleaned.
Good Current
Weld Too Low
TO CORRECT:
POWER CURRENT
ON MIN
I
O
OFF MAX
70 AMP
ARC WELDER
Page 10
Current Weld Speed
Too High
TO CORRECT: TO CORRECT:
Weld slower
POWER CURRENT
ON MIN
OVERLOAD I OVERLOAD
O
OFF MAX
70 AMP
ARC WELDER
For technical questions, please call 1-888-866-5797.
dead-blow hammer
dead-blow hammer
Weld Speed
Too Fast Too Slow
TO CORRECT:
Weld faster
clamp
SCRAP
workpiece
GOOD WELD
bends and is not brittle
clamp
SCRAP
workpiece
POOR WELD
snaps or cracks
Arc Length Arc Length
Too Short Too Long
TO CORRECT: TO CORRECT:
Increase Decrease
distance distance
Item 68888