I am not familiar with your specific models but UV
lights should not be viewed directly.
To prevent this usually there is a trigger switch that prevents the bulb from lighting unless the unit is completely assembled. On some of my smaller wattage UV
units you can hardly even tell the bulb is on when the unit is running unless it is very dark in the room. Plus some units can overheat if they do not have water constantly flowing through them to cool them down.
If you just want to test that the bulb is actually lighting look for a little spring tab or dead man switch that the cover will close when the unit is assembled. Plug in the unit and hold the switch for a second and see if the bulb lights.