21Bend-Tech Dragon A400
Maintenance & Troubleshooting
Torch
04
Symptom Cause Corrective Action
Torch Not Firing
Hypertherm not powered
on.
Check Hypertherm power switch;
check power cable; check cable to
Control Box.
Torch set too high.
Check Torch height with feeler gauge;
perform Torch Mount procedure.
Improper air supply. Check air supply, check air pressure.
Consumables.
Remove and inspect Torch
consumables. Refer to Consumables
Guide.
Torch Colliding With
Material
Material selected in
software does not match
material loaded into
machine.
Check to ensure material chosen in
software matches material loaded in
the machine.
Torch improperly set. Perform Torch Mount procedure.
Grounding The Torch
It is critical the Dragon A400 Torch is grounded properly. Improper grounding can lead to
numerous cutting issues. Early Dragon A400 Machines used a pair of brushes contacting the
Chuck Spindle to ground the Torch. The Operator can achieve more consistent grounding by
converting to a grounding tab mounted on the pillow block bearing.
1.
red E-stop button. Reach inside the Chuck Housing and hold the E-Stop button while
unscrewing the chrome retaining collar. Remove the chrome retaining collar and yellow
E-stop label. Remove the E-Stop button and lay out of the way on the Trolley. Remove the
Chuck Housing, leaving the Front Plate.
2. Use a ¾ in. socket to remove the rear pillow block mount bolt nearest the Y motor.
Tools Needed
•
• Ratchet
• 12 in. extension
•
• ¾ in. socket
• ½ in. wrench
• Grinder
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