Troubleshooting Torch - Miller Electric Spectrum 1251 Owner's Manual

7-7. Troubleshooting Torch

Trouble
Arc goes on and off while cutting.
Arc goes out while cutting.
Sparks come out top of cut or cut is not
clean.
Trouble lights are on; unit has no cutting
output.
.
A complete Parts List is available at www.MillerWelds.com
Torch travel speed too slow; increase travel speed (see Section 5-5). Clean or replace torch consumables
as necessary (see Section 7-4). Be sure work clamp is securely attached to workpiece.
Be sure work clamp is securely attached to workpiece. Make sure tip is on or near [1/16 in (1.6 mm) to
1/8 in (3.2 mm)] workpiece (see Section 5-5). Clean or replace torch consumables as necessary (see
Section 7-4).
Torch travel speed too fast; reduce travel speed (see Section 5-5). Clean or replace torch consumables
as necessary (see Section 7-4). Be sure work clamp is securely attached to workpiece. Unit not capable
of cutting metals thicker than rating (see Section 4-3).
Check torch consumables. Check for gas/air flow at torch. Check air supply connection and pressure to
unit and torch. Reset unit Power switch. Have Factory Authorized Service Agent check torch and
connections inside unit.
Remedy
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