What year is your 330? I had to replace the sump pump on my 2016 330 and while the box is easy to get to the pump change was complicated by the fact that the old pump was discontinued and the replacement required a higher amperage breaker in the panel. If it is only the float switch however you are in luck as that can easily be swapped out although I think they may have also changed the design of the sump box at some point as well since 2016. I recall I improved the ac drain as long as I had the box out as it did not drain well and also serves as the pump out for your ac condensate.