2. If the build unit is in the printer, remove it.
3. Ensure that the printer is not printing.
4. Turn off the printer.
5. If a job has just been printed, wait about 20 minutes for the printer to cool down.
6. You are recommended to wear gloves and goggles.
7. Open the top cover.
Clean the thermal camera glass
1. Vacuum the sensor glass with a soft brush nozzle.
2. Clean the external surface of the sensor glass:
a. Wipe the glass surface with a soft, clean cloth dampened with a general-purpose industrial
cleaner, such as Simple Green industrial cleaner. Remove any remaining soap foam with
mixture of mild, non-abrasive detergent and deionized water (in proportions recommended
164 Chapter 11 Hardware maintenance