Valley FABRICATOR 251 Service Manual - Service Manual
Manual is about: MIG WELDING MACHINE
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August 22, 2008
7-9
SERVICE MANUAL
FABRICATOR 251
7.12 Wire Feed and Weld Problems
A. Poor or inconsistent arc transfer or no arc transfer
1. Poor work cable connection or open work cable
a. Clean contact point, check continuity of cable and cable to clamp connection. Replace if work cable if
required.
B. Wire feed and welding problems
(Refer to sections 6.03 & 6.03 )
7.13 Terminal Block Voltage Test
Line 1
208 V
230 V
Fan
Fan
Main
Transformer
Fan Primary
Note: Voltage Tolerance = +/-5V
BLK
WHT
208V
230V
230V
Art # A-07541
Figure 7-1: Input Terminal Block Diagram