Gah, I just wrote, and posted an edit, but it doesn't appear to have posted.
Anyway, I looked at the filter and it's a Hayward swim pro high rate sand filter. There was a model number on it(SW166T) but I couldn't find it on their website at all!
I have some pictures of it, so perhaps someone might recognize it, and be able to tell me if it's connected properly?

http://img.photobucket.com/albums/v4...a/100_3106.jpg

http://img.photobucket.com/albums/v4...a/100_3105.jpg

http://img.photobucket.com/albums/v4...a/100_3104.jpg

Thank you.