Congratulations equalme on getting that awesome deal!
For maintenance, I think the list below will be enough, but if anyone else has more things to add, please feel free to do so.
1. Is the table level?
2. Do the rods slide in and out easily? (+ do the rods spin easily)
3. Are the legs not wobbly?
4. Are the rods bent?
5. Are the tabletop and balls clean enough to not interrupt gameplay?
Have fun with your table!