Bench Test / KickingHorse / P40

Test intent

Separate torch, air, and clamp faults from HF, control, and main-power faults.
Confirm HF-start, OCV path, and cut transfer are stable after repair.
Verify the machine does not drift into fan-supply or switch-power instability when warm.

Check	Expected condition	Result
Torch front-end stack	correctly assembled, fresh consumables, no burned head	pass / fail
Clamp placement	bright metal, tight return path	pass / fail
Air quality	dry air and stable pressure under flow	pass / fail
HF gap before energizing	set near 1.5 mm	pass / fail

Checkpoint	Expected value or behavior	Record actual
HF PCB supply	about 24 VDC
OCV test with HF wire removed	stable machine-side output present when expected
Fan or control supply	stays near 24 V, not drifting down toward 14 V or up toward 48 V
HF behavior	visible or audible consistent HF on start attempt

Test	Pass condition	Result
Air sequence	normal preflow or postflow behavior, no stuck-air complaint	pass / fail
Start test	repeatable HF and start on clean steel	pass / fail
Transfer test	transfers cleanly from pilot to cutting arc	pass / fail
Short cut	stable cut without dropout or abnormal sputter	pass / fail
Warm retest	no loss of fan supply or switch-power stability	pass / fail

No HF: verify gap, 24 V support, and torch condition before condemning HF board.
HF present but no OCV: stay in control-board branch.
Air flows but no cut: stay in front-end stack, gas orifice, and clamp branch before main board.
Fan or control voltage drifting: stay in switch-power branch.

Use these only after the complaint has been proven to follow a torch-front-end or consumable branch rather than a control or power fault.
P40 product and accessories entry: official P40 product page
SG55 electrode 07Y2517003: official product page
SG55 nozzle 07Y2517004: use the official P40 accessories or SG55 consumables path from the product ecosystem above.
SG55 tip 07Y2517005: use the official P40 accessories or SG55 consumables path from the product ecosystem above.
Manual cross-check: the official P40 owner manual lists SG55 torch-head and consumable order numbers.

Signoff item	Result
Start behavior restored	pass / fail
Transfer behavior restored	pass / fail
Short cut completed cleanly	pass / fail
No abnormal heat, torch damage, or supply drift after retest	pass / fail

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