Testing And Calibrating The Uv Lamps - Stratasys J850 User Manual

Stratasys J850/J835 User Guide
➢ If the replacement head was not calibrated by Stratasys, remove the head

Testing and Calibrating the UV Lamps

The level of UV radiation from the lamps used for curing 3D prints can change
over time. To ensure optimum curing of 3D prints during printing, a pop-up
message reminds you to test the lamps and calibrate the level of UV radiation
after every 300 hours of printing. You do this by running the UV Calibration
Wizard.
To measure the UV radiation, you need:
• Stratasys TOL-03005-S (UV sensor and cable)
• a stand-alone UV radiation meter, approved for use with the printer
The wizard compares the measured radiation to the recommended radiation
level for each of the lamps, at each printing mode—High Speed / High Quality.
When calibrating the lamps, the wizard attempts to adjust the radiation level, if
necessary.
• If the reading is within the acceptable range, the wizard continues to the
• If further adjustment is necessary, the current phase is repeated.
• If the level of UV radiation is too low to be properly adjusted, the wizard
Before testing and calibrating the UV lamps:
l
l
DOC-18001 Rev. H
and replace it with another one.
Figure 4-118 Invalid-head warning
Contact your Stratasys service provider about the uncalibrated head.
or—
next phase.
continues to the next phase, but the final wizard screen indicates that the
lamp's radiation for the printing mode is unacceptable.
Make sure the glass lens on each of the UV lamps is clean. For easy
access, run the Head Cleaning Wizard, and use the special sanding
sponge supplied in the Start-Up Kit.
Make sure that the glass over the UV radiation sensor is clean.
4 Operating and Maintaining the Printer
4-82