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TROUBLESHOOTING & REPAIR
FOR REPLACEMENT OF SWITCH ASSEMBLY
FIGURE F.78 - PRETEST POWER SUPPLY
PRETEST POWER | 5A |
SWITCH | FUSE |
ISOLATED 115 VAC
P70 | P70 |
2 | 2 |
3 | 3 |
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5
6
Connect the pretest power supply to plug P70 as per Figure F.78. See wiring diagram.
ARC START PW450 WITH WIREFEEDER
The arc start may be initiated by any of the follow- ing methods:
5
6
1.Release wire tension and pull gun trigger.
2.Jumper pins C and D on wire feeder input con- nector.
3.Jumper pins D and E on front panel amphenol connector near welding output terminals.
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