Is it the only detector you have in your house? Perhaps Fire Alarm Fan (N. Lind) would be able to help you as he himself has one. However…
I know that the S-180 is an old photoelectric detector, and the bulb is what makes it function, but since the detector is well over ten years old and replacement bulbs are becoming increasingly more difficult to find, I’d recommend replacing it.
A good photoelectric hardwired alarm with battery backup would be the First Alert 7010B. It’s the model I have in my room back home and I haven’t had a problem with it since I got it.