Hypertherm LR2075 - Manual (Page 25)

INSTALLATION
3-10 LR 2075 Laser Head Instruction Manual
Caution: Do not turn on the laser beam without a lens in the cutting head or
damage can occur to internal parts.
Acrylic mode-burn procedure
1. Insert a 5" or a 7.5" (focal length) lens in one lens bay and insert a lens blank in the other lens bay. Close both doors.
2. Remove the nozzle but leave the nozzle adapter on the cutting head.
3. Position the acrylic in front of the nozzle adapter at a distance equal to the focal length . See section 4 of this manual
for more information about focal lengths.
4. Turn on a low flow of inert gas, such as nitrogen, through the assist gas port.
5. Turn on the exhaust fan and filter to collect the fumes.
6. Turn on the laser beam long enough to form the mode burn and then turn off the laser beam.
7. The mode formed will be similar to what would be seen on the lens.
Note: Do not turn on the laser beam without a lens in the cutting head or damage can occur to
internal parts.
254 mm (10") 381 mm (15")
Mode burn for 7.5" lens
Mode burn for 5" lens