Hypertherm LR2075 - Manual (Page 41)

OPERATION
4-16 LR 2075 Laser Head Instruction Manual
Are parameters set to stated
specifications or to a process
used in the past?
Yes
No
No
Yes
Have you cut this
material before?
Yes
No Set to closest available process parameters
Yes
No
Yes
No
No
Reset cut speed and increase gas pressure.
No
No
Other possible causes:
– Laser power
– Laser mode
Yes
Correct parameters for
Pressure, assist-gas type, focal position,
focal length, cut speed, nozzle size,
nozzle-to-workpiece height and laser power
Dross on stainless steel
Is problem corrected?
Record new settings
and continue cutting
Is problem corrected?
No
Is problem corrected?
Is problem corrected?
Is problem corrected?
Is problem corrected?
Yes
Is dross present only
when cutting in a certain
direction?
Inspect lens for
dirt or damage.
Clean or replace.
Inspect lens for
dirt or damage.
Clean or replace.
Increase cut speed.
(start with 10%)
Reset gas pressure and decrease nozzle-to-workpiece height.
Adjust focal position: start by moving lens closer to plate by 10% of material thickness.
Continue cutting
Is problem corrected? No
Yes
Yes
Yes
Inspect nozzle for damage to baffle,
dross adhesion, beam centering
and orifice condition.
Replace if damaged.
Troubleshooting (N
2
cutting)