Stratasys J850 Manual page 107

17. In the Maintenance Counters screen, click
Figure 4-122 on page 4-82).
If the printer exhaust is not connected to an external ventilation system, a
built-in activated-carbon filter removes odors from printing materials. This
filter should be replaced regularly (as necessary) to keep your working
environment pleasant. This is normally done during the preventive-
maintenance service visit.
The UV lamps used for curing models have a long, but limited, working life.
You can test and adjust their effective power with the UV Calibration wizard .
If you need to replace a UV lamp, follow these instructions:
1. Make sure the printer is in offline mode.
The online/offline button at the bottom of the printer interface should be
red. If not, click it to switch the printer to offline mode.
2. Start the UV Lamp Replacement wizard from the Options menu.
and then (see