Bench Test / WeldKing / MAG251

Test intent

Tools and setup

Pre-power checks

Check Expected condition Result
Gun, liner, and tip baseline chart-correct plain-steel base-gun setup with clean feed path pass / fail
Polarity and output lead placement correct for active process pass / fail
Drive roll and pressure correct for wire type and not excessive pass / fail
Spool-gun branch if attached isolated and not affecting base-gun proving pass / fail

Electrical and control checkpoints

Checkpoint Expected value or behavior Record actual
Gas-valve branch on trigger around the documented MAG-family solenoid level, not dead or erratic
Output smoothness during short weld no obvious ripple-heavy arc or unstable buzz
Feed direction after board work correct forward feed, not reversed
Spool-gun branch only active when that branch is selected and connected correctly

Functional proof

Test Pass condition Result
Normal startup no abnormal breaker trip or immediate fault state pass / fail
Trigger feed baseline feed starts only on command and stops cleanly pass / fail
Plain-steel MIG weld stable short weld with normal arc smoothness pass / fail
Re-trigger behavior no post-trigger run-on beyond normal expectation pass / fail
Spool-gun check if required only fails if complaint genuinely follows that branch pass / fail

If it fails

Direct official parts pages

Post-repair release

Signoff item Result
Base MIG baseline restored pass / fail
Gas command restored pass / fail
Feed direction and stop behavior restored pass / fail
Spool-gun branch behaves normally if required pass / fail
No abnormal ripple, breaker trip, or run-on after power cycle pass / fail

Technician: __________ Date: __________ Serial or shop tag: __________