escort petrol van over heating?

hi, i am a mechanical retard so please bare with me. I have a 1.4 petrol escort van. yesterday the radiator hose blew apart from a connector that was joining it? I replaced the connector and re-filled the radiator water and i think i managed to bleed it, but not sure!! The next day (today) I drove 20 miles to a job with no problems then 4 hours later drove home, that was when i noticed the temp gauge sky rocket, so i stopped to let the van cool down? it seems the radiator fan does not kick in? any suggestions????? many thanks