Gday bazzah, welcome to CS ...
To me looks like a semi-automatic HX, where you can control the flow-time of extraction via those red switches. Dont know the age or the model though from your pic - could be a Classic. I also cant tell from the angle of your pic whether a pressure stat gauge, to give readings of relative steam & extraction levels, exists on the face of the machine.
Maybe post another pic (smaller please! ;)), but front on rather than the angle, so it gives us a better look at the machine.
Also, with respect, you say youre new to this caper but can identify the pump as the only non-functioning aspect of the machine ... how did you pinpoint that as the problem?
Anyway mate, a bit more info provided might reap a few more answers.